Forgot about TLS when adding the delay autoflush.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
0e22dfd1 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.470 2007/02/06 11:11:39 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
PH
6Exim version 4.67
7-----------------
8
22ad45c9
MH
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
PH
13PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
14 issue a MAIL command.
15
431b7361
PH
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
PH
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
PH
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
PH
53PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
54
6bf342e1
PH
55PH/09 Installed PCRE release 7.0.
56
273f34d0
PH
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
PH
63PH/11 Added control=no_pipelining.
64
41c7c167
PH
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
PH
70PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
71
f3f065bb
PH
72PH/14 Added log_selector = +pid.
73
047bdd8c
PH
74PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
75
0ce9abe6
PH
76PH/16 Add ${if forany and ${if forall.
77
0e22dfd1
PH
78PH/17 Added dsn_from option to vary the From: line in DSNs.
79
b4ed4da0 80
5dd1517f
PH
81Exim version 4.66
82-----------------
83
84PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
85 fixed by 4.65/MH/01 (is this a record?) are fixed:
86
87 (i) An empty string was always treated as zero by the numeric comparison
88 operators. This behaviour has been restored.
89
90 (ii) It is documented that the numeric comparison operators always treat
91 their arguments as decimal numbers. This was broken in that numbers
92 starting with 0 were being interpreted as octal.
93
94 While fixing these problems I realized that there was another issue that
95 hadn't been noticed. Values of message_size_limit (both the global option
96 and the transport option) were treated as octal if they started with 0.
97 The documentation was vague. These values are now always treated as
98 decimal, and I will make that clear in the documentation.
99
100
93cfa765
TK
101Exim version 4.65
102-----------------
103
104TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
105 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
106 versions. (#438)
107
d6066548
MH
108MH/01 Don't check that the operands of numeric comparison operators are
109 integers when their expansion is in "skipping" mode (fixes bug
110 introduced by 4.64-PH/07).
111
4362ff0d
PH
112PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
113 child addresses, Exim now panics and dies. Previously, because the count
114 is held in a short int, deliveries were likely to be lost. As such a
115 large number of recipients for a single message is ridiculous
116 (performance will be very, very poor), I have chosen to impose a limit
117 rather than extend the field.
118
93cfa765 119
944e9e9c
TF
120Exim version 4.64
121-----------------
aa41d2de 122
21d74bd9
TK
123TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
124 leftover -K file (the existence of which was triggered by #402).
125 While we were at it, introduced process PID as part of the -K
126 filename. This should rule out race conditions when creating
127 these files.
128
129TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
130 processing considerably. Previous code took too long for large mails,
131 triggering a timeout which in turn triggers #401.
132
133TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
134 in the DK code in transports.c. sendfile() is not really portable,
135 hence the _LINUX specificness.
944e9e9c
TF
136
137TF/01 In the add_headers option to the mail command in an Exim filter,
138 there was a bug that Exim would claim a syntax error in any
139 header after the first one which had an odd number of characters
140 in the field name.
141
2b1c6e3a
PH
142PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
143 callout verification, Exim cached a "reject" for the entire domain. This
144 is correct for most verifications, but it is not correct for a recipient
145 verification with use_sender or use_postmaster set, because in that case
146 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
147 case of MAIL FROM:<> rejection from other early rejections (e.g.
148 rejection of HELO). When verifying a recipient using a non-null MAIL
149 address, the cache is ignored if it shows MAIL FROM:<> rejection.
150 Whatever the result of the callout, the value of the domain cache is
151 left unchanged (for any other kind of callout, getting as far as trying
152 RCPT means that the domain itself is ok).
153
1f872c80
PH
154PH/02 Tidied a number of unused variable and signed/unsigned warnings that
155 gcc 4.1.1 threw up.
156
157PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
158 manifest itself as EPIPE rather than ECONNECT. When tidying away a
159 session, the daemon ignores ECONNECT errors and logs others; it now
160 ignores EPIPE as well.
161
d203e649
PH
162PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
163 (quoted-printable decoding).
164
cc2ed8f7 165PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 166 later the small subsequent patch to fix an introduced bug.
f951fd57 167
ddfcd446
PH
168PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
169
d45b1de8
PH
170PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
171
172PH/08 An error is now given if message_size_limit is specified negative.
173
38a0a95f 174PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 175 to be given (somewhat) arbitrary names.
38a0a95f 176
a2405d83
JJ
177JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
178 in 4.64-PH/09.
179
180JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
181 miscellaneous code fixes
182
6ea85e9a
PH
183PH/10 Added the log_reject_target ACL modifier to specify where to log
184 rejections.
185
26da7e20
PH
186PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
187 hostname. This is wrong, because it relates to the incoming message (and
188 probably the interface on which it is arriving) and not to the outgoing
189 callout (which could be using a different interface). This has been
190 changed to use the value of the helo_data option from the smtp transport
191 instead - this is what is used when a message is actually being sent. If
192 there is no remote transport (possible with a router that sets up host
193 addresses), $smtp_active_hostname is used.
6ea85e9a 194
14aa5a05 195PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 196 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
197 (a) The code assumed that strncpy() returns a negative number on buffer
198 overflow, which isn't the case. Replaced with Exim's string_format()
199 function.
200 (b) There were several signed/unsigned issues. I just did the minimum
201 hacking in of casts. There is scope for a larger refactoring.
202 (c) The code used strcasecmp() which is not a standard C function.
203 Replaced with Exim's strcmpic() function.
204 (d) The code set only $1; it now sets $auth1 as well.
205 (e) A simple test gave the error "authentication client didn't specify
206 service in request". It would seem that Dovecot has changed its
207 interface. Fortunately there's a specification; I followed it and
208 changed what the client sends and it appears to be working now.
209
ff75a1f7
PH
210PH/13 Added $message_headers_raw to provide the headers without RFC 2047
211 decoding.
212
e6f6568e
PH
213PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
214 address A is aliased to B and C, where B exists and C does not. Without
215 -v the output is "A verified" because verification stops after a
216 successful redirection if more than one address is generated. However,
217 with -v the child addresses are also verified. Exim was outputting "A
218 failed to verify" and then showing the successful verification for C,
219 with its parentage. It now outputs "B failed to verify", showing B's
220 parentage before showing the successful verification of C.
221
d6f6e0dc
PH
222PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
223 look up a TXT record in a specific list after matching in a combined
224 list.
225
322050c2
PH
226PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
227 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
228 they consult the DNS. I had assumed they would set it the way they
229 wanted; and indeed my experiments on Linux seem to show that in some
230 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
231 To be on the safe side, however, I have now made the interface to
232 host_find_byname() similar to host_find_bydns(), with an argument
233 containing the DNS resolver options. The host_find_byname() function now
234 sets these options at its start, just as host_find_bydns() does. The smtp
235 transport options dns_qualify_single and dns_search_parents are passed to
236 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
237 of host_find_byname() use the default settings of RES_DEFNAMES
238 (qualify_single) but not RES_DNSRCH (search_parents).
239
08955dd3
PH
240PH/17 Applied (a modified version of) Nico Erfurth's patch to make
241 spool_read_header() do less string testing, by means of a preliminary
242 switch on the second character of optional "-foo" lines. (This is
243 overdue, caused by the large number of possibilities that now exist.
244 Originally there were few.) While I was there, I also converted the
245 str(n)cmp tests so they don't re-test the leading "-" and the first
246 character, in the hope this might squeeze out yet more improvement.
247
1eccaa59
PH
248PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
249 flag allowing group syntax was set by the header_syntax check but not
250 turned off, possible causing trouble later; (2) The flag was not being
251 set at all for the header_verify test, causing "group"-style headers to
252 be rejected. I have now set it in this case, and also caused header_
253 verify to ignore an empty address taken from a group. While doing this, I
254 came across some other cases where the code for allowing group syntax
255 while scanning a header line wasn't quite right (mostly, not resetting
256 the flag correctly in the right place). These bugs could have caused
257 trouble for malformed header lines. I hope it is now all correct.
258
602e59e5
PH
259PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
260 with the "reply" argument non-NULL. The code, however (which originally
261 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
262 but it didn't always do it. This confused somebody who was copying the
263 code for some other use. I have removed all the tests.
264
411ef850
PH
265PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
266 feature that was used to support insecure browsers during the U.S. crypto
267 embargo. It requires special client support, and Exim is probably the
268 only MTA that supported it -- and would never use it because real RSA is
269 always available. This code has been removed, because it had the bad
270 effect of slowing Exim down by computing (never used) parameters for the
271 RSA_EXPORT functionality.
272
7befa435
PH
273PH/21 On the advice of Timo Sirainen, added a check to the dovecot
274 authenticator to fail if there's a tab character in the incoming data
275 (there should never be unless someone is messing about, as it's supposed
276 to be base64-encoded). Also added, on Timo's advice, the "secured" option
277 if the connection is using TLS or if the remote IP is the same as the
278 local IP, and the "valid-client-cert option" if a client certificate has
279 been verified.
280
48da4259 281PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
282 authenticators. This can be used for authorization after authentication
283 succeeds. (In the case of plaintext, it servers for both authentication
284 and authorization.)
285
48da4259
PH
286PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
287 if any retry times were supplied.
288
d1d5595c
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289PH/24 Exim crashed if verify=helo was activated during an incoming -bs
290 connection, where there is no client IP address to check. In this
291 situation, the verify now always succeeds.
292
0ef732d9
PH
293PH/25 Applied John Jetmore's -Mset patch.
294
328895cc
PH
295PH/26 Added -bem to be like -Mset, but loading a message from a file.
296
fd700877
PH
297PH/27 In a string expansion for a processed (not raw) header when multiple
298 headers of the same name were present, leading whitespace was being
299 removed from all of them, but trailing whitespace was being removed only
300 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
301 before concatenation. Completely empty headers in a concatenation (as
302 before) are ignored.
fd700877 303
8dce1a6f
PH
304PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
305 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
306
17af4a17
PH
307PH/29 [Removed. This was a change that I later backed out, and forgot to
308 correct the ChangeLog entry (that I had efficiently created) before
309 committing the later change.]
f6c332bd
PH
310
311PH/30 Exim was sometimes attempting to deliver messages that had suffered
312 address errors (4xx response to RCPT) over the same connection as other
313 messages routed to the same hosts. Such deliveries are always "forced",
314 so retry times are not inspected. This resulted in far too many retries
315 for the affected addresses. The effect occurred only when there were more
316 hosts than the hosts_max_try setting in the smtp transport when it had
317 the 4xx errors. Those hosts that it had tried were not added to the list
318 of hosts for which the message was waiting, so if all were tried, there
319 was no problem. Two fixes have been applied:
320
321 (i) If there are any address or message errors in an SMTP delivery, none
322 of the hosts (tried or untried) are now added to the list of hosts
323 for which the message is waiting, so the message should not be a
324 candidate for sending over the same connection that was used for a
325 successful delivery of some other message. This seems entirely
326 reasonable: after all the message is NOT "waiting for some host".
327 This is so "obvious" that I'm not sure why it wasn't done
328 previously. Hope I haven't missed anything, but it can't do any
329 harm, as the worst effect is to miss an optimization.
330
331 (ii) If, despite (i), such a delivery is accidentally attempted, the
332 routing retry time is respected, so at least it doesn't keep
333 hammering the server.
334
c1114884
PH
335PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
336 in ${readsocket because some servers need this prod.
337
7a0743eb
PH
338PH/32 Added some extra debug output when updating a wait-xxx database.
339
0d85fa3f
PH
340PH/33 The hint "could be header name not terminated by colon", which has been
341 given for certain expansion errors for a long time, was not being given
342 for the ${if def:h_colon_omitted{... case.
343
1bf43b78
PH
344PH/34 The spec says: "With one important exception, whenever a domain list is
345 being scanned, $domain contains the subject domain." There was at least
346 one case where this was not true.
347
520de300
PH
348PH/35 The error "getsockname() failed: connection reset by peer" was being
349 written to the panic log as well as the main log, but it isn't really
350 panic-worthy as it just means the connection died rather early on. I have
351 removed the panic log writing for the ECONNRESET error when getsockname()
352 fails.
353
48c7f9e2
PH
354PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
355 runs only) independently of the message's sender address. This meant
356 that, if the 4xx error was in fact related to the sender, a different
357 message to the same recipient with a different sender could confuse
358 things. In particualar, this can happen when sending to a greylisting
359 server, but other circumstances could also provoke similar problems.
360 I have changed the default so that the retry time for these errors is now
361 based a combination of the sender and recipient addresses. This change
362 can be overridden by setting address_retry_include_sender=false in the
363 smtp transport.
364
99ea1c86
PH
365PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
366 remote server are returned as part of bounce messages. This was not
367 happening for LMTP over a pipe (the lmtp transport), but now it is the
368 same for both kinds of LMTP.
369
a2042e78
PH
370PH/38 Despite being documented as not happening, Exim was rewriting addresses
371 in header lines that were in fact CNAMEs. This is no longer the case.
372
4fbcfc2e
PH
373PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
374 and queue runs started by the daemon processed all messages. This has
375 been fixed so that -R and -S can now usefully be given with -q<time>.
376
aa41d2de
PH
377PH/40 Import PCRE release 6.7 (fixes some bugs).
378
af561417
PH
379PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
380
3cc66b45
PH
381PH/42 Give an error if -q is specified more than once.
382
194cc0e4
PH
383PH/43 Renamed the variables $interface_address and $interface_port as
384 $received_ip_address and $received_port, to make it clear that these
385 values apply to message reception, and not to the outgoing interface when
386 a message is delivered. (The old names remain recognized, of course.)
387
a401ddaa
PH
388PH/44 There was no timeout on the connect() call when using a Unix domain
389 socket in the ${readsocket expansion. There now is.
390
4e88a19f
PH
391PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
392 be meaningful with "accept".
393
d7d7b289
SC
394SC/01 Eximstats V1.43
395 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
396
397SC/02 Eximstats V1.44
398 Use a glob alias rather than an array ref in the generated
399 parser. This improves both readability and performance.
400
401SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
402 Collect SpamAssassin and rejection statistics.
403 Don't display local sender or destination tables unless
404 there is data to show.
405 Added average volumes into the top table text output.
406
407SC/04 Eximstats V1.46
408 Collect data on the number of addresses (recipients)
409 as well as the number of messages.
410
411SC/05 Eximstats V1.47
412 Added 'Message too big' to the list of mail rejection
413 reasons (thanks to Marco Gaiarin).
414
415SC/06 Eximstats V1.48
416 Mainlog lines which have GMT offsets and are too short to
417 have a flag are now skipped.
418
419SC/07 Eximstats V1.49 (Alain Williams)
420 Added the -emptyok flag.
421
422SC/08 Eximstats V1.50
423 Fixes for obtaining the IP address from reject messages.
424
0ea2a468
JJ
425JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
426 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
427 whitesspace changes from 4.64-PH/27
428
429JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
430 match 4.64-PH/13
431
432JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
433 are found, allow negative numbers in numeric criteria)
434
435JJ/06 exipick.20061117.2, added new $message_body_missing variable
436
437JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
438 to match changes made in 4.64-PH/43
439
8a10f5a4
PH
440PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
441
30e18802
PH
442PH/47 Put in an explicit test for a DNS lookup of an address record where the
443 "domain" is actually an IP address, and force a failure. This locks out
444 those revolvers/nameservers that support "A-for-A" lookups, in
445 contravention of the specifications.
446
55728a4f
PH
447PH/48 When a host name was looked up from an IP address, and the subsequent
448 forward lookup of the name timed out, the host name was left in
449 $sender_host_name, contrary to the specification.
d7d7b289 450
d7837193
PH
451PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
452 restricted to single-key lookups, Exim was not diagnosing an error if
453 * or *@ was used with a query-style lookup.
454
87054a31
PH
455PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
456
ea2c01d2
MH
457MH/01 local_scan ABI version incremented to 1.1. It should have been updated
458 long ago, but noone interested enough thought of it. Let's just say that
459 the "1.1" means that there are some new functions that weren't there at
460 some point in the past.
461
e4fa6968
PH
462PH/51 Error processing for expansion failure of helo_data from an smtp
463 transport during callout processing was broken.
464
56f5d9bd
PH
465PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
466 tested/used via the -bh/-bhc/-bs options.
467
922e1c28
PH
468PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
469 bug, fixed in subsequent PCRE releases).
470
21eb6e72
PH
471PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
472 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
473
a0540757
PH
474PH/55 Check for a ridiculously long file name in exim_dbmbuild.
475
944e9e9c 476
478be7b0
SC
477Exim version 4.63
478-----------------
479
480SC/01 Use a glob alias rather than an array ref in eximstats generated
481 parser. This improves both readability and performance.
482
483SC/02 Collect SpamAssassin and rejection statistics in eximstats.
484 Don't display local sender or destination tables in eximstats unless
485 there is data to show.
486 Added average volumes into the eximstats top table text output.
487
488SC/03 Collect data on the number of addresses (recipients) as well
489 as the number of messages in eximstats.
490
2b965a65
TF
491TF/01 Correct an error in the documentation for the redirect router. Exim
492 does (usually) call initgroups() when daemonizing.
478be7b0 493
45b91596
PH
494TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
495 with consistent privilege compared to when running as a daemon.
478be7b0 496
c59f5781
TF
497TF/03 Note in the spec that $authenticated_id is not set for local
498 submissions from trusted users.
499
90fc3069
TF
500TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
501 Thanks to Dean Brooks <dean@iglou.com> for the patch.
502
6083aca0
TF
503TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
504 by adding some example configuration directives to the default
505 configuration file. A little bit of work is required to uncomment the
506 directives and define how usernames and passwords are checked, but
507 there is now a framework to start from.
508
765b530f
PH
509PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
510 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
511 without this. I don't know how relevant this is to other LDAP libraries.
512
4e167a8c
PH
513PH/02 Add the verb name to the "unknown ACL verb" error.
514
4608d683
PH
515PH/03 Magnus Holmgren's patch for filter_prepend_home.
516
b8dc3e4a
PH
517PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
518
5418e93b
PH
519PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
520 directory not expanded when it should be if an expanded home directory
521 was set for the address (which is overridden by the transport).
522
b4a9bda2
PH
523PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
524 libradius.
525
45b91596
PH
526PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
527 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
528 because it is too late at that time, and has no effect.
529
5547e2c5
PH
530PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
531 security issue with \' (bugzilla #107). I could not use the
532 PQescapeStringConn() function, because it needs a PGconn value as one of
533 its arguments.
534
dbcef0ea
PH
535PH/08 When testing addresses using -bt, indicate those final addresses that
536 are duplicates that would not cause an additional delivery. At least one
537 person was confused, thinking that -bt output corresponded to deliveries.
538 (Suppressing duplicates isn't a good idea as you lose the information
539 about possibly different redirections that led to the duplicates.)
540
25257489
PH
541PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
542 systems where poll() doesn't work, in particular OS X.
543
c816d124
PH
544PH/10 Added more information to debugging output for retry time not reached.
545
a9ccd69a
PH
546PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
547 operations in malware.c.
548
75fa1910
PH
549PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
550 signatures.
551
a7d7aa58
PH
552PH/13 If write_rejectlog was set false when logging was sent to syslog with
553 syslog_duplication set false, log lines that would normally be written
554 both the the main log and to the reject log were not written to syslog at
555 all.
556
42119b09
PH
557PH/14 In the default configuration, change the use of "message" in ACL warn
558 statements to "add_header".
559
41609df5
PH
560PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
561 not followed by a command (e.g. "seen endif").
562
a5bd321b
PH
563PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
564 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
565 latter.
566
e85a7ad5 567PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
568 so that it is now:
569
e85a7ad5
PH
570 ${if or { \
571 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
572 { match{$h_precedence:}{(?i)bulk|list|junk} } \
573 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
574 }{no}{yes}}
575
e85a7ad5
PH
576 The Auto-Submitted: and various List- headers are standardised, whereas I
577 don't think Precedence: ever was.
5dff5817 578
d8fe1c03
PH
579PH/18 Refactored debugging code in route_finduser() to show more information,
580 in particular, the error code if getpwnam() issues one.
581
16282d2b
PH
582PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
583 This is apparently needed in addition to the PH/07 change above to avoid
584 any possible encoding problems.
585
35d40a98
PH
586PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
587 but not after initializing Perl.
588
034d99ab
PH
589PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
590 output them only if debugging. By default they are written stderr,
591 apparently, which is not desirable.
592
6ec97b1b
PH
593PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
594 queries.
595
e22ca4ac
JJ
596JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
597 --not options
598
599JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
600
33d73e3b
PH
601PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
602 authenticated or an ident call has been made. Suppress the default
603 values for $authenticated_id and $authenticated_sender (but permit -oMai
604 and -oMas) when testing with -bh.
605
9ecb03f3
PH
606PH/24 Re-jigged the order of the tests in the default configuration so that the
607 tests for valid domains and recipients precede the DNS black list and CSA
608 tests, on the grounds that those ones are more expensive.
609
084efe8d
PH
610PH/25 Exim was not testing for a space following SMTP commands such as EHLO
611 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
612 This bug exists in every version of Exim that I still have, right back to
613 0.12.
614
366fc9f0
PH
615PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
616 However, an attempt to turn on case-sensitivity in a regex key by
617 including (?-i) didn't work because the subject string was already
618 lowercased, and the effects were non-intuitive. It turns out that a
619 one-line patch can be used to allow (?-i) to work as expected.
620
c59f5781 621
c887c79e
TF
622Exim version 4.62
623-----------------
624
625TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
626 other effects) broke the use of negated acl sub-conditions.
627
1cce3af8
PH
628PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
629 patch).
630
afb3eaaf
PH
631PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
632 "Deny" causes Exim to reject the incoming connection with a 554 error.
633 Unfortunately, if there is a major crisis, such as a disk failure,
634 tcp-wrappers gives "deny", whereas what one would like would be some
635 kind of temporary error. A kludge has been added to help with this.
636 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
637 554 error is used if errno is still zero or contains ENOENT (which occurs
638 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
639 451 error is used.
640
e173618b
PH
641PH/03 Add -lutil to the default FreeBSD LIBS setting.
642
dd16e114
PH
643PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
644 errors. Otherwise a message that provokes a temporary error (when other
645 messages do not) can cause a whole host to time out.
646
f7fd3850
PH
647PH/05 Batch deliveries by appendfile and pipe transports did not work when the
648 addresses were routed directly to files or pipes from a redirect router.
649 File deliveries just didn't batch; pipe deliveries might have suffered
650 odd errors.
651
d87df92c
PH
652PH/06 A failure to get a lock for a hints database would erroneously always say
653 "Failed to get write lock", even when it was really a read lock.
654
7e9f683d
PH
655PH/07 The appendfile transport was creating MBX lock files with a fixed mode
656 of 0600. This has been changed to use the value of the lockfile_mode
657 option (which defaults to 0600).
658
bfad5236
PH
659PH/08 Applied small patch from the Sieve maintainer.
660
01c490df
PH
661PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
662 folder from quota calculations, a direct delivery into this folder messed
663 up the contents of the maildirsize file. This was because the regex was
664 used only to exclude .Trash (or whatever) when the size of the mailbox
665 was calculated. There was no check that a delivery was happening into an
666 excluded directory. This bug has been fixed by ignoring all quota
667 processing for deliveries into excluded directories.
668
d6629cdc
PH
669PH/10 Added the maildirfolder_create_regex option to appendfile.
670
1cce3af8 671
214e2000
PH
672Exim version 4.61
673-----------------
674
675PH/01 The code for finding all the local interface addresses on a FreeBSD
676 system running IPv6 was broken. This may well have applied to all BSD
677 systems, as well as to others that have similar system calls. The broken
678 code found IPv4 interfaces correctly, but gave incorrect values for the
679 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
680 that it would not match correctly against @[] and not recognize the IPv6
681 addresses as local.
682
f9daeae0
PH
683PH/02 The ipliteral router was not recognizing addresses of the form user@
684 [ipv6:....] because it didn't know about the "ipv6:" prefix.
685
7e66e54d
PH
686PH/03 Added disable_ipv6.
687
c8ea1597
PH
688PH/04 Changed $reply_address to use the raw form of the headers instead of the
689 decoded form, because it is most often used to construct To: headers
690 lines in autoreplies, and the decoded form may well be syntactically
691 invalid. However, $reply_address has leading white space removed, and all
692 newlines turned into spaces so that the autoreply transport does not
693 grumble.
694
911f6fde
PH
695PH/05 If group was specified without a user on a router, and no group or user
696 was specified on a transport, the group from the router was ignored.
697
47ca6d6c
PH
698PH/06 Increased the number of ACL variables to 20 of each type, and arranged
699 for visible compile-time settings that can be used to change these
700 numbers, for those that want even more. Backwards compatibility with old
701 spool files has been maintained. However, going back to a previous Exim
702 release will lost any variables that are in spool files.
703
ed0e9820
PH
704PH/07 Two small changes when running in the test harness: increase delay when
705 passing a TCP/IP connection to a new process, in case the original
706 process has to generate a bounce, and remove special handling of
707 127.0.0.2 (sic), which is no longer necessary.
708
eff37e47
PH
709PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
710 be the same on different OS.
711
1921d2ea
PH
712PH/09 Moved a debug statement in filter processing to avoid a race problem when
713 testing.
714
b3f69ca8
JJ
715JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
716 whether --show-vars was specified or not
717
718JJ/02 exipick: Added support for new ACL variable spool format introduced
719 in 4.61-PH/06
720
424a1c63
PH
721PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
722 syntactically invalid From: or Reply-to: line, and a filter used this to
723 generate an autoreply, and therefore failed to obtain an address for the
724 autoreply, Exim could try to deliver to a non-existent relative file
725 name, causing unrelated and misleading errors. What now happens is that
726 it logs this as a hard delivery error, but does not attempt to create a
727 bounce message.
728
7a100415
PH
729PH/11 The exinext utility has a -C option for testing purposes, but although
730 the given file was scanned by exinext itself; it wasn't being passed on
731 when Exim was called.
732
19b9dc85
PH
733PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
734 an end-of-file indication when reading a command response.
735
309bd837
PH
736PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
737 compiled. In many other places in Exim, IPv6 addresses are always
738 recognized, so I have changed this. It also means that IPv4 domain
739 literals of the form [IPV4:n.n.n.n] are now always recognized.
740
59e82a2a
PH
741PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
742 used if the router is not running as root, for example, when verifying at
743 ACL time, or when using -bh. The debugging output from this situation was
744 non-existent - all you got was a failure to exec. I have made two
745 changes:
746
747 (a) Failures to set uid/gid, the current directory, or a process leader
748 in a subprocess such as that created by queryprogram now generate
749 suitable debugging ouput when -d is set.
750
751 (b) The queryprogram router detects when it is not running as root,
752 outputs suitable debugging information if -d is set, and then runs
753 the subprocess without attempting to change uid/gid.
754
9edc04ce
PH
755PH/15 Minor change to Makefile for building test_host (undocumented testing
756 feature).
757
1349e1e5
PH
758PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
759 additional section of a DNS packet that returns MX or SRV records.
760 Instead, it always explicitly searches for A/AAAA records. This avoids
761 major problems that occur when a DNS server includes only records of one
762 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
763 fixed another bug: if SRV records were looked up and the corresponding
764 address records were *not* found in the additional section, the port
765 values from the SRV records were lost.
766
ea49d0e1
PH
767PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
768 using the correct key (the original address) when searching the retry
769 rules in order to find which one to use for generating the retry hint.
770
064a94c9
PH
771PH/18 If quota_warn_message contains a From: header, Exim now refrains from
772 adding the default one. Similarly, if it contains a Reply-To: header, the
773 errors_reply_to option, if set, is not used.
774
727071f8
PH
775PH/19 When calculating a retry time, Exim used to measure the "time since
776 failure" by looking at the "first failed" field in the retry record. Now
777 it does not use this if it is later than than the arrival time of the
778 message. Instead it uses the arrival time. This makes for better
779 behaviour in cases where some deliveries succeed, thus re-setting the
780 "first failed" field. An example is a quota failure for a huge message
781 when small messages continue to be delivered. Without this change, the
782 "time since failure" will always be short, possible causing more frequent
783 delivery attempts for the huge message than are intended.
dd16e114 784 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 785
f78eb7c6
PH
786PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
787 $1, $2, $3) because the numerical variables can be reset during some
788 expansion items (e.g. "match"), thereby losing the authentication data.
789
21c28500
PH
790PH/21 Make -bV show the size of off_t variables so that the test suite can
791 decide whether to run tests for quotas > 2G.
792
793PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
794 mailbox_size, and mailbox_filecount in the appendfile transport. If a
795 filecount value is greater than 2G or if a quota value is greater than 2G
796 on a system where the size of off_t is not greater than 4, a panic error
797 is given.
798
1688f43b
PH
799PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
800 never match. The debug and -bh output now contains an explicit error
801 message indicating a malformed IPv4 address or mask.
802
803PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
804 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
805 PH/23 above applies.
806
9675b384
PH
807PH/25 Do not write to syslog when running in the test harness. The only
808 occasion when this arises is a failure to open the main or panic logs
809 (for which there is an explicit test).
810
6a3f1455
PH
811PH/26 Added the /no_tell option to "control=freeze".
812
dac79d3e
PH
813PH/27 If a host name lookup failed very early in a connection, for example, if
814 the IP address matched host_lookup and the reverse lookup yielded a name
815 that did not have a forward lookup, an error message of the form "no IP
816 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
817 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 818
5977a0b3
PH
819PH/28 An enabling patch from MH: add new function child_open_exim2() which
820 allows the sender and the authenticated sender to be set when
821 submitting a message from within Exim. Since child_open_exim() is
822 documented for local_scan(), the new function should be too.
823
c91535f3
PH
824PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
825 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
826 results in an empty string is now treated as unset.
827
0d46a8c8
PH
828PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
829
278c6e6c
PH
830PH/31 Added sender_verify_fail logging option.
831
2cbb4081
PH
832PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
833 needed by RFC 822 but not by RFC 2822 was commented out. I have now
834 tidied the source and removed it altogether.
835
3eef829e
PH
836PH/33 When a queue run was abandoned because the load average was too high, a
837 log line was always written; now it is written only if the queue_run log
838 selector is set. In addition, the log line for abandonment now contains
839 information about the queue run such as the pid. This is always present
840 in "start" and "stop" lines but was omitted from the "abandon" line.
841
1ab95fa6
PH
842PH/34 Omit spaces between a header name and the colon in the error message that
843 is given when verify = headers_syntax fails (if there are lots of them,
844 the message gets confusing).
845
230205fc
PH
846PH/35 Change the default for dns_check_names_pattern to allow slashes within
847 names, as there are now some PTR records that contain slashes. This check
848 is only to protect against broken name servers that fall over on strange
849 characters, so the fact that it applies to all lookups doesn't matter.
850
75e0e026
PH
851PH/36 Now that the new test suite is complete, we can remove some of the
852 special code in Exim that was needed for the old test suite. For example,
853 sorting DNS records because real resolvers return them in an arbitrary
854 order. The new test suite's fake resolver always returns records in the
855 same order.
856
857PH/37 When running in the test harness, use -odi for submitted messages (e.g.
858 bounces) except when queue_only is set, to avoid logging races between
859 the different processes.
860
145396a6
PH
861PH/38 Panic-die if .include specifies a non-absolute path.
862
3cd34f13
PH
863PH/39 A tweak to the "H" retry rule from its user.
864
11121d3d
JJ
865JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
866 a label. They prevented compilation on older perls.
867
868JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
869 a warning to be raised on newish perls.
870
871JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
872 on queue. Changes to match documented behaviour of showing count of
873 messages matching specified criteria.
874
8def5aaf
PH
875PH/40 Changed the default ident timeout from 30s to 5s.
876
929ba01c
PH
877PH/41 Added support for the use of login_cap features, on those BSD systems
878 that have them, for controlling the resources used by pipe deliveries.
879
2632889e
PH
880PH/42 The content-scanning code uses fopen() to create files in which to put
881 message data. Previously it was not paying any attention to the mode of
882 the files. Exim runs with umask(0) because the rest of the code creates
883 files with open(), and sets the required mode explicitly. Thus, these
884 files were ending up world-writeable. This was not a big issue, because,
885 being within the spool directory, they were not world-accessible. I have
886 created a function called modefopen, which takes an additional mode
887 argument. It sets umask(777), creates the file, chmods it to the required
888 mode, then resets the umask. All the relevant calls to fopen() in the
889 content scanning code have been changed to use this function.
890
944a9c55
PH
891PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
892 to 24 hours. This avoids potential overflow problems when processing G
893 and H retry rules. I suspect nobody ever tinkers with this value.
894
4a23603b
PH
895PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
896
4730f942
PH
897PH/45 When the plaintext authenticator is running as a client, the server's
898 challenges are checked to ensure they are valid base64 strings. By
899 default, the authentication attempt is cancelled if an invalid string is
900 received. Setting client_ignore_invalid_base64 true ignores these errors.
901 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
902 they are received. Thus, the responses can be made to depend on the
903 challenges. If an invalid string is ignored, an empty string is placed in
904 the variable.
905
30dba1e6
PH
906PH/46 Messages that are created by the autoreply transport now contains a
907 References: header, in accordance with RFCs 2822 and 3834.
908
382afc6b
PH
909PH/47 Added authenticated_sender_force to the smtp transport.
910
a86229cf
PH
911PH/48 The ${prvs expansion was broken on systems where time_t was long long.
912
50c99ba6
PH
913PH/49 Installed latest patch from the Sieve maintainer.
914
d35e429d
PH
915PH/50 When an Exim quota was set without a file count quota, and mailbox_size
916 was also set, the appendfile transport was unnecessarily scanning a
917 directory of message files (e.g. for maildir delivery) to find the count
918 of files (along with the size), even though it did not need this
919 information. It now does the scan only if it needs to find either the
920 size of the count of files.
921
f90d018c
PH
922PH/51 Added ${time_eval: to convert Exim time strings into seconds.
923
75def545
PH
924PH/52 Two bugs concerned with error handling when the smtp transport is
925 used in LMTP mode:
926
927 (i) Exim was not creating retry information for temporary errors given
928 for individual recipients after the DATA command when the smtp transport
929 was used in LMTP mode. This meant that they could be retried too
930 frequently, and not timed out correctly.
931
932 (ii) Exim was setting the flag that allows error details to be returned
933 for LMTP errors on RCPT commands, but not for LMTP errors for individual
934 recipients that were returned after the DATA command.
935
936PH/53 This is related to PH/52, but is more general: for any failing address,
937 when detailed error information was permitted to be returned to the
938 sender, but the error was temporary, then after the final timeout, only
939 "retry timeout exceeded" was returned. Now it returns the full error as
940 well as "retry timeout exceeded".
941
c46782ef
PH
942PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
943 do this, and (what is worse) MTAs that accept it.
944
71fafd95
PH
945PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
946 will now be deprecated.
947
2c5db4fd
PH
948PH/56 New os.c-cygwin from the Cygwin maintainer.
949
9cf6b11a
JJ
950JJ/06 exipick: added --unsorted option to allow unsorted output in all output
951 formats (previously only available in exim formats via -bpr, -bpru,
952 and -bpra. Now also available in native and exiqgrep formats)
953
954JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
955 with very large, slow to parse queues
956
957JJ/08 exipick: added ! as generic prefix to negate any criteria format
958
959JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
960
898d150f
PH
961PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
962 responses to authentication challenges, though it was showing the
963 challenges; (ii) I've removed the CR characters from the debug output for
964 SMTP output lines.
965
46218253
PH
966PH/58 Allow for the insertion of a newline as well as a space when a string
967 is turned into more than one encoded-word during RFC 2047 encoding. The
968 Sieve code now uses this.
969
e97957bc
PH
970PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
971 data_4xx, lost_connection, tls_required.
972
81e509d7
PH
973PH/60 When a VRFY deferred or FAILED, the log message rather than the user
974 message was being sent as an SMTP response.
975
3d240ff7
PH
976PH/61 Add -l and -k options to exicyclog.
977
b37c4101
PH
978PH/62 When verifying, if an address was redirected to one new address, so that
979 verification continued, and the new address failed or deferred after
980 having set something in $address_data, the value of $address_data was not
981 passed back to the ACL. This was different to the case when no
982 redirection occurred. The value is now passed back in both cases.
983
79378e0f
PH
984PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
985 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
986 use login_cap.h, so on its own it isn't the distinguishing feature. The
987 new name refers directly to the setclassresources() function.
988
e49c7bb4
PH
989PH/65 Added configuration files for NetBSD3.
990
d114ec46
PH
991PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
992
f3d7df6c
PH
993PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
994 is preferred over IPv4.
995
715ab376
PH
996PH/68 The bounce_return_message and bounce_return_body options were not being
997 honoured for bounces generated during the reception of non-SMTP messages.
998 In particular, this applied to messages rejected by the ACL. This bug has
999 been fixed. However, if bounce_return_message is true and bounce_return_
1000 body is false, the headers that are returned for a non-SMTP message
1001 include only those that have been read before the error was detected.
1002 (In the case of an ACL rejection, they have all been read.)
1003
6b31b150
PH
1004PH/69 The HTML version of the specification is now built in a directory called
1005 spec_html instead of spec.html, because the latter looks like a path with
1006 a MIME-type, and this confuses some software.
1007
1008PH/70 Catch two compiler warnings in sieve.c.
1009
d515a917
PH
1010PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1011 function verify_get_ident() calls ip_connect() to connect a socket, but
1012 if the "connect()" function timed out, ip_connect() used to close the
1013 socket. However, verify_get_ident() also closes the socket later, and in
1014 between Exim writes to the log, which may get opened at this point. When
1015 the socket was closed in ip_connect(), the log could get the same file
1016 descriptor number as the socket. This naturally causes chaos. The fix is
1017 not to close the socket in ip_connect(); the socket should be closed by
1018 the function that creates it. There was only one place in the code where
1019 this was missing, in the iplookup router, which I don't think anybody now
1020 uses, but I've fixed it anyway.
1021
9b8fadde
PH
1022PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1023 well as to direct DNS lookups. Otherwise the handling of names in host
1024 lists is inconsistent and therefore confusing.
1025
214e2000 1026
5de37277
PH
1027Exim version 4.60
1028-----------------
1029
cc38ddbf
PH
1030PH/01 Two changes to the default runtime configuration:
1031
1032 (1) Move the checks for relay_from_hosts and authenticated clients from
1033 after to before the (commented out) DNS black list checks.
1034
1035 (2) Add control=submission to the relay_from_hosts and authenticated
1036 clients checks, on the grounds that messages accepted by these
1037 statements are most likely to be submissions.
5de37277 1038
72fdd6ae
PH
1039PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1040
1041 (1) Generate an error if the third argument for the ${prvs expansion is
1042 not a single digit.
1043
1044 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1045 string.
1046
1047 (3) Reset the variables that are obtained from the first argument of
1048 ${prvscheck and used in the second argument before leaving the code,
1049 because their memory is reclaimed, so using them afterwards may do
1050 silly things.
1051
1052 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1053 one (it's much easier than Tom thought :-).
1054
1055 (5) Because of (4), we can now allow for the use of $prvscheck_result
1056 inside the third argument.
cb9328de 1057
cb741023
PH
1058PH/03 For some reason, the default setting of PATH when running a command from
1059 a pipe transport was just "/usr/bin". I have changed it to
1060 "/bin:/usr/bin".
1061
f174f16e
PH
1062PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1063 anything to be listed in the output from -bV.
b2f5a032 1064
c25242d7
PH
1065PH/05 When a filter generated an autoreply, the entire To: header line was
1066 quoted in the delivery log line, like this:
1067
1068 => >A.N.Other <ano@some.domain> <original@ddress> ...
1069
1070 This has been changed so that it extracts the operative address. There
1071 may be more than one such address. If so, they are comma-separated, like
1072 this:
1073
1074 => >ano@some.domain,ona@other.domain <original@ddress> ...
1075
82c19f95
PH
1076PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1077 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1078 not being looked up in the rDNS to get a host name, Exim was showing the
1079 IP address twice in Received: lines, even though the IP addresses were
1080 identical. For example:
1081
1082 Received: from [1.2.3.4] (helo=[1.2.3.4])
1083
1084 However, if the real host name was known, it was omitting the HELO data
1085 if it matched the actual IP address. This has been tidied up so that it
1086 doesn't show the same IP address twice.
1087
d7ffbc12
PH
1088PH/07 When both +timestamp and +memory debugging was on, the value given by
1089 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1090 called by the debug printing, thereby overwriting the timestamp buffer.
1091 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1092
9f526266
PH
1093PH/08 When the original message was included in an autoreply transport, it
1094 always said "this is a copy of the message, including all the headers",
1095 even if body_only or headers_only was set. It now gives an appropriate
1096 message.
1097
87fcc8b9
PH
1098PH/09 Applied a patch from the Sieve maintainer which:
1099
1100 o fixes some comments
1101 o adds the (disabled) notify extension core
1102 o adds some debug output for the result of if/elsif tests
1103 o points to the current vacation draft in the documentation
1104 and documents the missing references header update
1105
1106 and most important:
1107
1108 o fixes a bug in processing the envelope test (when testing
1109 multiple envelope elements, the last element determinted the
1110 result)
1111
456682f5
PH
1112PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1113 Electronic Mail") by including:
1114
1115 Auto-submitted: auto-generated
1116
1117 in the messages that it generates (bounce messages and others, such as
1118 warnings). In the case of bounce messages for non-SMTP mesages, there was
1119 also a typo: it was using "Auto_submitted" (underscore instead of
1120 hyphen). Since every message generated by Exim is necessarily in response
1121 to another message, thes have all been changed to:
1122
1123 Auto-Submitted: auto-replied
1124
1125 in accordance with these statements in the RFC:
1126
1127 The auto-replied keyword:
1128
1129 - SHOULD be used on messages sent in direct response to another
1130 message by an automatic process,
1131
1132 - MUST NOT be used on manually-generated messages,
1133
1134 - MAY be used on Delivery Status Notifications (DSNs) and Message
1135 Disposition Notifications (MDNs),
1136
1137 - MUST NOT be used on messages generated by automatic or periodic
1138 processes, except for messages which are automatic responses to
1139 other messages.
1140
3e46c1aa
PH
1141PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1142 to the default Received: header definition.
456682f5 1143
49826d12
PH
1144PH/12 Added log selector acl_warn_skipped (default on).
1145
eba0c039
PH
1146PH/13 After a successful wildlsearch lookup, discard the values of numeric
1147 variables because (a) they are in the wrong storage pool and (b) even if
1148 they were copied, it wouldn't work properly because of the caching.
1149
a0d6ba8a
PH
1150PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1151 checking when decoding. Apparently there are clients that generate
1152 overlong encoded strings. Why am I not surprised?
1153
f0917727
PH
1154PH/15 If the first argument of "${if match_address" was not empty, but did not
1155 contain an "@" character, Exim crashed. Now it writes a panic log message
1156 and treats the condition as false.
1157
096fee00
PH
1158PH/16 In autoreply, treat an empty string for "once" the same as unset.
1159
024bd3c2
PH
1160PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1161 extension "envelope-auth". The code is finished and in agreement with
1162 other implementations, but there is no documentation so far and in fact,
1163 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1164 not changing the active code.
1165
1166 Print executed "if" and "elsif" statements when debugging is used. This
1167 helps a great deal to understand what a filter does.
1168
1169 Document more things not specified clearly in RFC3028. I had all this
1170 sorted out, when out of a sudden new issues came to my mind. Oops."
1171
df199fec
PH
1172PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1173 (Bugzilla #53).
1174
d27f1df3
PH
1175PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1176 canonical form (as documented). However, after a host name lookup from
1177 the IP address, check_host() was doing a simple string comparison with
1178 addresses acquired from the DNS when checking that the found name did
1179 have the original IP as one of its addresses. Since any found IPv6
1180 addresses are likely to be in abbreviated form, the comparison could
1181 fail. Luckily, there already exists a function for doing the comparison
1182 by converting both addresses to binary, so now that is used instead of
1183 the text comparison.
1184
96776534
PH
1185PH/20 There was another similar case to PH/19, when a complete host name was
1186 given in a host list; looking up its IP address could give an abbreviated
1187 form, whereas the current host's name might or might not be abbreviated.
1188 The same fix has been applied.
1189
5de37277 1190
9a799bc0
PH
1191Exim version 4.54
1192-----------------
1193
1194PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1195 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1196 It now does.
1197
99a4b039
PH
1198PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1199 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1200
1201PH/03 Typo: missing ".o" in src/pcre/Makefile.
1202
4b233853
PH
1203PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1204 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1205 Also, for "Auto-Submitted", treat anything other than "no" as
1206 non-personal, in accordance with RFC 3834. (Previously it treated
1207 anything starting "auto-" as non-personal.)
1208
8857ccfd
PH
1209TF/01 The control=submission/name=... option had a problem with syntax
1210 errors if the name included a slash character. The /name= option
1211 now slurps the rest of the string, so it can include any characters
1212 but it must come last in the list of options (after /sender_retain
1213 or /domain=).
1214
433a2980
PH
1215PH/05 Some modifications to the interface to the fake nameserver for the new
1216 testing suite.
1217
3e46c1aa 1218
9a799bc0 1219
e3a311ba
TK
1220Exim version 4.53
1221-----------------
1222
1223TK/01 Added the "success_on_redirect" address verification option. See
1224 NewStuff for rationale and an example.
1225
13b685f9
PH
1226PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1227
395ff96d
PH
1228PH/02 Patch to exigrep to allow it to work on syslog lines.
1229
5b68f6e4
PH
1230PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1231 fread() to skip over the body file's header line, because in Cygwin the
1232 header line is locked and is inaccessible.
1233
1ab52c69
PH
1234PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1235 co-exist for some time) to make it clear that it is the Exim ID that is
1236 referenced, not the Message-ID: header line.
1237
b07e6aa3
PH
1238PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1239 string_format() function, because snprintf() does not exist on all
1240 operating systems.
1241
254e032f
PH
1242PH/06 The use of forbid_filter_existstest now also locks out the use of the
1243 ${stat: expansion item.
1244
3af76a81
PH
1245PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1246 protocol synchronization error", to keep the pedants happy.
1247
2548ba04
PH
1248PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1249 well as for IRIX systems, when gcc is being used. See the host.c source
1250 file for comments.
1251
b6c6011d
PH
1252PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1253
cf39cf57
PH
1254PH/10 Named domain lists were not working if used in a queue_smtp_domains
1255 setting.
1256
f1513293
PH
1257PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1258 transport and to the smtp transport in LMTP mode.
1259
727549a4
PH
1260TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1261
af46795e
PH
1262PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1263 run a filter in a subprocess. This could lead to confusion in subsequent
1264 lookups in the parent process. There should also be a search_tidyup() at
1265 the end of the subprocess.
1266
d7b47fd0
PH
1267PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1268 only if the host matched helo_try_verify_hosts, which caused the
1269 verification to occur when the EHLO/HELO command was issued. The ACL just
1270 tested the remembered result. Now, if a previous verification attempt has
1271 not happened, "verify = helo" does it there and then.
1272
ee744174
JJ
1273JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1274
b582ab87
PH
1275TK/03 Fix log output including CR from clamd.
1276
41a13e0a
PH
1277PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1278 exist provoked a memory error which could cause a segfault.
1279
f625cc5a
PH
1280PH/15 Installed PCRE 6.2
1281
1282PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1283
21f7af35
PH
1284PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1285 of the problem. Specifically, suggested +O2 rather than +O1 for the
1286 HP-UX compiler.
1287
31480e42
PH
1288PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1289
2d280592
PH
1290PH/20 If a delivery was routed to a non-standard port by means of an SRV
1291 record, the port was not correctly logged when the outgoing_port log
1292 selector was set (it logged the transort's default port).
1293
7cd1141b
PH
1294PH/21 Added support for host-specific ports to manualroute, queryprogram,
1295 fallback_hosts, and "hosts" in the smtp transport.
1296
1297PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1298 host errors such as "Connection refused".
1299
750af86e
PH
1300PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1301 authentication with radiusclient 0.4.9:
1302
1303 - Error returned from rc_read_config was caught wrongly
1304 - Username/password not passed on to radius server due to wrong length.
1305
1306 The presumption is that some radiusclient API changes for 4.51/PH/17
1307 were not taken care of correctly. The code is still untested by me (my
1308 Linux distribution still has 0.3.2 of radiusclient), but it was
1309 contributed by a Radius user.
1310
1311PH/24 When doing a callout, the value of $domain wasn't set correctly when
1312 expanding the "port" option of the smtp transport.
1313
4304270b
TK
1314TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1315 while reading a MIME header. Thanks to Tom Hughes for a patch.
1316
750af86e
PH
1317PH/24 Include config.h inside local_scan.h so that configuration settings are
1318 available.
1319
64ffc24f
PH
1320PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1321 that in an ACL for RCPT (for example), you can examine exactly what was
1322 received.
1323
5dd9625b
PH
1324PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1325 commands, but it was not correctly comparing the address with the actual
1326 client host address. Thus, it would show the EHLO address in Received:
1327 header lines when this was not necessary.
1328
5591031b
PH
1329PH/27 Added the % operator to ${eval:}.
1330
ba18e66a
PH
1331PH/28 Exim tries to create and chdir to its spool directory when it starts;
1332 it should be ignoring failures (because with -C, for example, it has lost
1333 privilege). It wasn't ignoring creation failures other than "already
1334 exists".
1335
9cec981f
PH
1336PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1337 -bV or -d is used.
1338
aa2b5c79
PH
1339PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1340 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1341 too many continuations, the temporary file was not being removed, and the
1342 return code was incorrect.
aa2b5c79 1343
48a53b7f
PH
1344PH/31 Missing "BOOL" in function definition in filtertest.c.
1345
1c59d63b
PH
1346PH/32 Applied Sieve patches from the maintainer.
1347
671012da
TK
1348TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1349
1509d3a8
PH
1350PH/33 Added "verify = not_blind".
1351
1352PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1353 Local/Makefile (with some defaults set). These are used in built scripts
1354 such as exicyclog, but they have never been used in the exim_install
1355 script (though there are many overriding facilities there). I have
1356 arranged that the exim_install script now takes note of these two
1357 settings.
1358
1359PH/35 Installed configuration files for Dragonfly.
1360
2fe1a124
PH
1361PH/36 When a locally submitted message by a trusted user did not contain a
1362 From: header, and the sender address was obtained from -f or from an SMTP
1363 MAIL command, and the trusted user did not use -F to supply a sender
1364 name, $originator_name was incorrectly used when constructing a From:
1365 header. Furthermore, $originator_name was used for submission mode
1366 messages from external hosts without From: headers in a similar way,
1367 which is clearly wrong.
1368
8800895a
PH
1369PH/37 Added control=suppress_local_fixups.
1370
ccfdb010
PH
1371PH/38 When log_selector = +received_sender was set, and the addition of the
1372 sender made the log line's construction buffer exactly full, or one byte
1373 less than full, an overflow happened when the terminating "\n" was
1374 subsequently added.
1375
1130bfb0
PH
1376PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1377 when the result of a list match is failure because a DNS lookup failed.
1378
ebcb507f
PH
1379PH/40 RM_COMMAND is now used in the building process.
1380
c35e155c
PH
1381PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1382 the "build-* directories that it finds.
1383
95d1f782
PH
1384PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1385 address in a domain literal was a prefix of an interface address.
1386
fd6de02e
PH
1387PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1388 when verifying a sender address, unless rewrite_headers is false.
1389
58de37c5
PH
1390PH/44 Wrote a long comment about why errors_to addresses are verified as
1391 recipients, not senders.
1392
261cf466
TF
1393TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1394 the ratelimit ACL was added.
1395
3ee512ff
PH
1396PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1397
e08c430f
PH
1398PH/46 Added extra information about PostgreSQL errors to the error string.
1399
bef5a11f
PH
1400PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1401 avoiding the need to install special zones in a real server. This is
1402 backwards compatible; if it can't find the fake resolver, it drops back.
1403 Thus, both old and new test suites can be run.
1404
7546de58
TF
1405TF/02 Added util/ratelimit.pl
1406
e5d5a95f
TF
1407TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1408 clock is set back in time.
1409
2e88a017
TF
1410TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1411 Candler <B.Candler@pobox.com>.
1412
a5f65aa4
TF
1413TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1414 OK for addresses that are the result of redirections.
1415
e7726cbf
PH
1416PH/48 A number of further additions for the benefit of the new test suite,
1417 including a fake gethostbyname() that interfaces to the fake DNS resolver
1418 (see PH/47 above).
1419
a7fdad5b
TF
1420TF/06 The fix for widen_domains has also been applied to qualify_single and
1421 search_parents which are the other dnslookup options that can cause
1422 header rewrites.
1423
6af56900
PH
1424PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1425 type ("H").
1426
0925ede6
PH
1427PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1428
66afa403
TF
1429TF/07 Exim produced the error message "an SRV record indicated no SMTP
1430 service" if it encountered an MX record with an empty target hostname.
1431 The message is now "an MX or SRV record indicated no SMTP service".
1432
0154e85a
TF
1433TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1434 if the DNS of the sending site is misconfigured. This is quite a
1435 common situation. This change restores the behaviour of treating a
1436 helo verification defer as a failure.
1437
16f12c76
PH
1438PH/51 If self=fail was set on a router, the bounce message did not include the
1439 actual error message.
1440
bbe902f0 1441
e5a9dba6
PH
1442Exim version 4.52
1443-----------------
1444
1445TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1446
22c3b60b
PH
1447PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1448 command itself ended in error, the underlying message about the transport
1449 filter timeout was being overwritten with the pipe command error. Now the
1450 underlying error message should be appended to the second error message.
1451
06a9b4b5
PH
1452TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1453
c1ac6996
PH
1454PH/02 Reduce the amount of output that "make" produces by default. Full output
1455 can still be requested.
1456
9c7a242c
PH
1457PH/03 The warning log line about a condition test deferring for a "warn" verb
1458 was being output only once per connection, rather than after each
1459 occurrence (because it was using the same function as for successful
1460 "warn" verbs). This seems wrong, so I have changed it.
1461
87ba3f5f
PH
1462TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1463 it should not have, which might have caused a crash in the right
1464 circumstances, but probably never did.
1465
1466PH/04 Installed a modified version of Tony Finch's patch to make submission
1467 mode fix the return path as well as the Sender: header line, and to
1468 add a /name= option so that you can make the user's friendly name appear
1469 in the header line.
1470
29aba418
TF
1471TF/03 Added the control = fakedefer ACL modifier.
1472
fe0dab11
TF
1473TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1474 Mark Lowes for thorough testing.
870f6ba8 1475
11d337a4
TK
1476TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1477
1478TK/03 Merged latest SRS patch from Miles Wilton.
1479
415c8f3b
PH
1480PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1481 with the definition in sysexits.h (which is #included earlier).
1482 Fortunately, Exim does not actually use EX_OK. The code used to try to
1483 preserve the sysexits.h value, by assumimg that macro definitions were
1484 scanned for macro replacements. I have been disabused of this notion,
1485 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1486
958541e9
PH
1487PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1488 in the smtp transport. When a block could not be written in a single
1489 write() function, the timeout was being re-applied to each part-write.
1490 This seems wrong - if the receiver was accepting one byte at a time it
1491 would take for ever. The timeout is now adjusted when this happens. It
1492 doesn't have to be particularly precise.
1493
c206415f
TK
1494TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1495 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1496
2a4be8f9
PH
1497PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1498 without a domain if the check to <postmaster@domain> fails.
1499
1cba11c5
SC
1500SC/01 Eximstats: added -xls and the ability to specify output files
1501 (patch written by Frank Heydlauf).
1502
1503SC/02 Eximstats: use FileHandles for outputing results.
1504
1505SC/03 Eximstats: allow any combination of xls, txt, and html output.
1506
1507SC/04 Eximstats: fixed display of large numbers with -nvr option
1508
1509SC/05 Eximstats: fixed merging of reports with empty tables.
1510
1511SC/06 Eximstats: added the -include_original_destination flag
1512
1513SC/07 Eximstats: removed tabs and trailing whitespace.
1514
1005d00e
TK
1515TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1516
1517TK/06 MBOX spool code: Add real "From " MBOX separator line
1518 so the .eml file is really in mbox format (even though
1519 most programs do not really care). Patch from Alex Miller.
1520
1521TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1522 The latter is generated from $received_to and is only set if the
1523 message has one envelope recipient. SA can use these headers,
1524 obviously out-of-the-box. Patch from Alex Miller.
1525
9b4768fa
PH
1526PH/08 The ${def test on a variable was returning false if the variable's
1527 value was "0", contrary to what the specification has always said!
1528 The result should be true unless the variable is empty.
1529
1530PH/09 The syntax error of a character other than { following "${if
1531 def:variable_name" (after optional whitespace) was not being diagnosed.
1532 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1533 accidental colon was present, for example, could give incorrect results.
1534
0d7eb84a
PH
1535PH/10 Tidied the code in a number of places where the st_size field of a stat()
1536 result is used (not including appendfile, where other changes are about
1537 to be made).
1538
1539PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1540 This involved changing a lot of size variables from int to off_t. It
1541 should work with maildirs and everything.
1542
40727bee
TK
1543TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1544 spamd dying while we are connected to it.
1545
554d2369
TF
1546TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1547 <jgh@wizmail.org>
1548
1f922db1
PH
1549PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1550 function for BDB 4.3.
1551
ef213c3b
PH
1552PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1553
8ac170f3
PH
1554PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1555 the sources for PCRE have been re-arranged and more files are now
1556 involved.
1557
b1c749bb
PH
1558PH/15 The code I had for printing potentially long long variables in PH/11
1559 above was not the best (it lost precision). The length of off_t variables
1560 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1561 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1562 to be "long long int" or "long int". This is needed for the internal
1563 formatting function string_vformat().
b1c749bb 1564
4aac9b49
PH
1565PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1566 the configuration file to be ":syslog", then the script "guesses" where
1567 the logs files are, rather than using the compiled in default. In our
1568 case the guess is not the same as the compiled default, so the script
1569 suddenly stopped working when I started to use syslog. The patch checks
1570 to see if log_file_path is "". If so, it attempts to read it from exim
1571 with no configuration file to get the compiled in version, before it
1572 falls back to the previous guessing code."
1573
294520c8
TK
1574TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1575 implementing BATV in an Exim configuration. See NewStuff for the gory
1576 details.
1577
5bd022fe
PH
1578PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1579 Makefile that are specific to HP-UX.
1580
90e9ce59
PH
1581PH/18 If the "use_postmaster" option was set for a recipient callout together
1582 with the "random" option, the postmaster address was used as the MAIL
1583 FROM address for the random test, but not for the subsequent recipient
1584 test. It is now used for both.
1585
5ea81592
PH
1586PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1587 patch removes a few documentation additions to RFC 3028, because the
1588 latest draft now contains them. It adds the new en;ascii-case comparator
1589 and a new error check for 8bit text in MIME parts. Comparator and
1590 require names are now matched exactly. I enabled the subaddress
1591 extension, but it is not well tested yet (read: it works for me)."
1592
c6c2dc1d
PH
1593PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1594 rework some of the code of TK/09 above to avoid the hardwired use of
1595 "%lld" and "long long". Replaced the call to snprintf() with a call to
1596 string_vformat().
1597
fffffe4c
PH
1598PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1599 records point to non-existent hosts", "retry timeout exceeded", and
1600 "retry time not reached for any host after a long failure period".
ca02eafb 1601
9a26b6b2
PH
1602PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1603 experimental DomainKeys support:
1604
1605 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1606 (2) On an error such as an illegally used "control", the wrong name for
1607 the control was given.
1608
1609 These problems did NOT occur unless DomainKeys support was compiled.
1610
4aee0225
PH
1611PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1612
32d668a5
PH
1613PH/24 Added ${if match_ip condition.
1614
8187c3f3
PH
1615PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1616 databases so that it will be absolutely obvious if a crash occurs in the
1617 DB library. This is a regular occurrence (often caused by mis-matched
1618 db.h files).
1619
ff790e47 1620PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1621 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1622 picked up on a user's system that detects such things. There doesn't seem
1623 to be a gcc warning option for this - only an attribute that has to be
1624 put on the function's prototype. It seems that in Fedora Core 4 they have
1625 set this on a number of new functions. No doubt there will be more in due
1626 course.
ff790e47 1627
5417f6d1
PH
1628PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1629 specify a transport. However, if an address that was verified by such a
1630 router was the subject of a callout, Exim crashed because it tried to
1631 read the rcpt_include_affixes from the non-existent transport. Now it
1632 just assumes that the setting of that option is false. This bug was
1633 introduced by 4.51/PH/31.
1634
59cf8544
PH
1635PH/28 Changed -d+all to exclude +memory, because that information is very
1636 rarely of interest, but it makes the output a lot bigger. People tend to
1637 do -d+all out of habit.
1638
e7ad8a65
PH
1639PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1640 code in os-type was giving problems when libc.so lives in lib64, like on
1641 x86_64 Fedora Core.
1642
ade42478
PH
1643PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1644 aren't the modern standard, and it seems that some systems' include files
1645 don't always have them. Exim was already checking for some of the newer
1646 ones like T_AAAA, and defining it itself. I've added checks for all the
1647 record types that Exim uses.
1648
182ad5cf
PH
1649PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1650 not automatically generating a new one, as it is supposed to. This
1651 prevented TLS from working. If the file did exist, but contained invalid
1652 data, a new version was generated, as expected. It was only the case of a
1653 non-existent file that was broken.
1654
b0d9fc80
TK
1655TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1656 with a change in libdomainkeys > 0.64.
1657
1658TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1659 from DNS. If the selector record carries the flag, it now has
1660 precedence over the domain-wide flag.
1661
1662TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1663
47c7a64a
PH
1664PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1665 the use of a port name that isn't defined in /etc/services) occurred, the
1666 message was deferred as in a normal delivery, and thus remained on the
1667 spool, instead of being failed because of the mua_wrapper setting. This
1668 is now fixed, and I tidied up some of the mua_wrapper messages at the
1669 same time.
1670
a388bce4
SC
1671SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1672 the messages in a hash of arrays rather than using individual hashes.
1673 This is a bit cleaner and results in dramatic memory savings, albeit
1674 at a slight CPU cost.
1675
1676SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1677 as requested by Marc Sherman.
1678
1679SC/10 Eximstats: added histograms for user specified patterns as requested
1680 by Marc Sherman.
1681
0793e4ed
SC
1682SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1683
c58b88df
PH
1684PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1685 fopen() in the content-scanning modules that did not already have it.
1686
e7ad8a65 1687
7982096b
PH
1688Exim version 4.51
1689-----------------
1690
1a46a8c5
PH
1691TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1692 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1693
2f079f46 1694TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1695
1696TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1697
1698PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1699 to test Sieve filters that use "vacation".
1700
1701PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1702 that changes the way the GnuTLS parameters are stored in the cache file.
1703 The new format can be generated externally. For backward compatibility,
1704 if the data in the cache doesn't make sense, Exim assumes it has read an
1705 old-format file, and it generates new data and writes a new file. This
1706 means that you can't go back to an older release without removing the
1707 file.
1708
1709PH/03 A redirect router that has both "unseen" and "one_time" set does not
1710 work if there are any delivery delays because "one_time" forces the
1711 parent to be marked "delivered", so its unseen clone is never tried
1712 again. For this reason, Exim now forbids the simultaneous setting of
1713 these two options.
1714
1715PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1716 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1717 entry if you want to know the details. The fix, however, neglected to
1718 consider the case when local delivery batching is involved. The test for
1719 "previously delivered" was not happening when checking to see if an
1720 address could be batched with a previous (undelivered) one; under
1721 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1722 address.
1a46a8c5
PH
1723
1724PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1725 in its include files, and this causes problems building Exim.
1726
1727PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1728 header_syntax) but Exim was just ignoring anything given after a slash.
1729 In particular, this caused confusion with an attempt to use "verify =
1730 reverse_host_lookup/defer_ok". An error is now given when options are
1731 supplied for verify items that do not have them. (Maybe reverse_host_
1732 lookup should have a defer_ok option, but that's a different point.)
1733
1734PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1735 defined by RFC 821) to 2048, because there were problems with some AUTH
1736 commands, and RFC 1869 says the size should be increased for extended
1737 SMTP commands that take arguments.
1738
1739PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1740 Finch).
1741
1742PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1743 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1744
49c2d5ea
PH
1745PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1746 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1747 whatever). Otherwise the password may appear in the log. Following change
1748 PH/42 below, there is no longer a chance of it appearing in a bounce
1749 message.
49c2d5ea 1750
bf759a8b
PH
1751PH/11 Installed exipick version 20050225.0 from John Jetmore.
1752
83364d30
PH
1753PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1754 of its addresses was ever tried. (Bugzilla bug #2.)
1755
7999bbd7
PH
1756PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1757 the result incorrectly in the debug output. (It correctly added a newline
1758 to what was transported.)
1759
7dbf77c9
PH
1760TF/01 Added $received_time.
1761
74e0617f
PH
1762PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1763 commented out examples of how to interface to a virus scanner and to
1764 SpamAssassin. Also added commented examples of av_scanner and
1765 spamd_address settings.
1766
2f079f46
PH
1767PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1768 and controls are allowed in which ACLs. There were a couple of minor
1769 errors. Some of the entries in the conditions table (which is a table of
1770 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1771 negation of where the condition IS allowed.
1772
8c841523
PH
1773PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1774
7766a4f0
PH
1775PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1776 header file does not have a version number, so I've had to invent a new
1777 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1778 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1779 radiusclient), but it was contributed by a Radius user.
1780
8b417f2c
PH
1781PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1782 files or directories, for OpenSSL.
1783
901f42cb
PH
1784PH/19 When an Exim process that is running as root has to create an Exim log
1785 file, it does so in a subprocess that runs as exim:exim so as to get the
1786 ownership right at creation (otherwise, other Exim processes might see
1787 the file with the wrong ownership). There was no test for failure of this
1788 fork() call, which would lead to the process getting stuck as it waited
1789 for a non-existent subprocess. Forks do occasionally fail when resources
1790 run out. I reviewed all the other calls to fork(); they all seem to check
1791 for failure.
1792
f9b9210e
PH
1793PH/20 When checking for unexpected SMTP input at connect time (before writing
1794 the banner), Exim was not dealing correctly with a non-positive return
1795 from the read() function. If the client had disconnected by this time,
1796 the result was a log entry for a synchronization error with an empty
1797 string after "input=" when read() returned zero. If read() returned -1
1798 (an event I could not check), uninitialized data bytes were printed.
1799 There were reports of junk text (parts of files, etc) appearing after
1800 "input=".
1801
54cdb463
PH
1802PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1803
cf00dad6
PH
1804PH/22 Added support for macro redefinition, and (re)definition in between
1805 driver and ACL definitions.
1806
acb1b346
PH
1807PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1808 forgetting to use the resulting value; it was using the unexpanded value.
1809
c5ddb310
PH
1810PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1811 hadn't been configured. The fix is from Juergen Kreileder, who
1812 understands it better than I do:
1813
1814 "Here's what I see happening with three configured cyrus_sasl
1815 authenticators configured (plain, login, cram-md5):
1816
1817 On startup auth_cyrus_sasl_init() gets called for each of these.
1818 This means three calls to sasl_listmech() without a specified mech_list.
1819 => SASL tests which mechs of all available mechs actually work
1820 => three warnings about OTP not working
1821 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1822
1823 With the patch, sasl_listmech() also gets called three times. But now
1824 SASL's mech_list option is set to the server_mech specified in the the
1825 authenticator. Or in other words, the answer from sasl_listmech()
1826 gets limited to just the mech you're testing for (which is different
1827 for each call.)
1828 => the return list contains just 'plain' or 'login', 'cram-md5' or
1829 nothing depending on the value of ob->server_mech.
1830
1831 I've just tested the patch: Authentication still works fine,
1832 unavailable mechs specified in the exim configuration are still
1833 caught, and the auth.log warnings about OTP are gone."
1834
31619da6
PH
1835PH/25 When debugging is enabled, the contents of the command line are added
1836 to the debugging output, even when log_selector=+arguments is not
1837 specified.
1838
bebaf0fc
PH
1839PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1840 answer is "GNU", and only if the return is "GNU/something" is the answer
1841 "Linux".
1842
475fe28a
PH
1843PH/27 $acl_verify_message is now set immediately after the failure of a
1844 verification in an ACL, and so is available in subsequent modifiers. In
1845 particular, the message can be preserved by coding like this:
1846
1847 warn !verify = sender
1848 set acl_m0 = $acl_verify_message
1849
1850 Previously, $acl_verify_message was set only while expanding "message"
1851 and "log_message" when a very denied access.
1852
7e8bec7a
PH
1853PH/28 Modified OS/os.c-Linux with
1854
1855 -#ifndef OS_LOAD_AVERAGE
1856 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1857
1858 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1859 nomenclature these days.)
1860
e4a89c47
PH
1861PH/29 Installed patch from the Sieve maintainer that adds the options
1862 sieve_useraddress and sieve_subaddress to the redirect router.
1863
5ca2a9a1
PH
1864PH/30 In these circumstances:
1865 . Two addresses routed to the same list of hosts;
1866 . First host does not offer TLS;
1867 . First host accepts first address;
1868 . First host gives temporary error to second address;
1869 . Second host offers TLS and a TLS session is established;
1870 . Second host accepts second address.
1871 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1872 and peerdn, if requested) that were in fact used only for the second
1873 address.
7e8bec7a 1874
c688b954
PH
1875PH/31 When doing a callout as part of verifying an address, Exim was not paying
1876 attention to any local part prefix or suffix that was matched by the
1877 router that accepted the address. It now behaves in the same way as it
1878 does for delivery: the affixes are removed from the local part unless
1879 rcpt_include_affixes is set on the transport.
1880
fed77020
PH
1881PH/32 Add the sender address, as F=<...>, to the log line when logging a
1882 timeout during the DATA phase of an incoming message.
1883
7fe1560f
PH
1884PH/33 Sieve envelope tests were broken for match types other than :is. I have
1885 applied a patch sanctioned by the Sieve maintainer.
c688b954 1886
ebb6e6d5
PH
1887PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1888 the uid or gid is negative. A case of a negative gid caused this to be
1889 noticed. The fix allows for either to be negative.
1890
9c4e8f60
PH
1891PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1892 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1893 overlooked.
1894
1895PH/36 The change PH/12 above was broken. Fixed it.
1896
d7174846
PH
1897PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1898 the grounds that routing the same address twice would always produce the
1899 same answer. This might have been true once, but it is certainly no
1900 longer true now. Routing a child address may depend on the previous
1901 routing that produced that child. Some complicated redirection strategies
1902 went wrong when messages had multiple recipients, and made Exim's
1903 behaviour dependent on the order in which the addresses were given.
1904
1905 I have moved the duplicate checking until after the routing is complete.
1906 Exim scans the addresses that are assigned to local and remote
1907 transports, and removes any duplicates. This means that more work will be
1908 done, as duplicates will always all be routed, but duplicates are
1909 presumably rare, so I don't expect this is of any significance.
1910
1911 For deliveries to pipes, files, and autoreplies, the duplicate checking
1912 still happens during the routing process, since they are not going to be
1913 routed further.
1914
cfe75fc3
PH
1915PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1916 It corrects a timeout issue with spamd. This is Ian's comment: "The
1917 background is that sometimes spamd either never reads data from a
1918 connection it has accepted, or it never writes response data. The exiscan
1919 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1920 blindly assumes that writes won't block so it may never time out."
1921
be22d70e
PH
1922PH/39 Allow G after quota size as well as K and M.
1923
0612b098
PH
1924PH/40 The value set for $authenticated_id in an authenticator may not contain
1925 binary zeroes or newlines because the value is written to log lines and
1926 to spool files. There was no check on this. Now the value is run through
1927 the string_printing() function so that such characters are converted to
1928 printable escape sequences.
1929
2e0c1448
PH
1930PH/41 $message_linecount is a new variable that contains the total number of
1931 lines in the message. Compare $body_linecount, which is the count for the
1932 body only.
1933
447d236c
PH
1934PH/42 Exim no longer gives details of delivery errors for specific addresses in
1935 bounce and delay warning messages, except in certain special cases, which
1936 are as follows:
1937
1938 (a) An SMTP error message from a remote host;
1939 (b) A message specified in a :fail: redirection;
1940 (c) A message specified in a "fail" command in a system filter;
1941 (d) A message specified in a FAIL return from the queryprogram router;
1942 (e) A message specified by the cannot_route_message router option.
1943
1944 In these cases only, Exim does include the error details in bounce and
1945 warning messages. There are also a few cases where bland messages such
1946 as "unrouteable address" or "local delivery error" are given.
1947
d20976dc
PH
1948PH/43 $value is now also set for the "else" part of a ${run expansion.
1949
f656d135
PH
1950PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1951 being worked on, but at least Exim now implements the latest version to
1952 play with."
1953
2e2a30b4
PH
1954PH/45 In a pipe transport, although a timeout while waiting for the pipe
1955 process to complete was treated as a delivery failure, a timeout while
1956 writing the message to the pipe was logged, but erroneously treated as a
1957 successful delivery. Such timeouts include transport filter timeouts. For
1958 consistency with the overall process timeout, these timeouts are now
1959 treated as errors, giving rise to delivery failures by default. However,
1960 there is now a new Boolean option for the pipe transport called
1961 timeout_defer, which, if set TRUE, converts the failures into defers for
1962 both kinds of timeout. A transport filter timeout is now identified in
1963 the log output.
1964
9176e9f0
PH
1965PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1966 systems where "make" and "gmake" are different, calling "gmake" at top
1967 level broke things. I've arranged for the value of $(MAKE) to be passed
1968 from the Makefile to this script so that it can call the same version of
1969 "make".
1970
7982096b 1971
bbe902f0
PH
1972A note about Exim versions 4.44 and 4.50
1973----------------------------------------
1974
1975Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1976changes of various kinds. As a consequence, a big documentation update was
1977needed. This delayed the release for rather longer than seemed good, especially
1978in the light of a couple of (minor) security issues. Therefore, the changes
1979that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1980release. So 4.44 and 4.50 are in effect two different branches that both start
1981from 4.43.
1982
1983I have left the 4.50 change log unchanged; it contains all the changes since
19844.43. The change log for 4.44 is below; many of its items are identical to
1985those for 4.50. This seems to be the most sensible way to preserve the
1986historical information.
1987
1988
f7b63901 1989Exim version 4.50
495ae4b0
PH
1990-----------------
1991
5fe762f6
PH
1992 1. Minor wording change to the doc/README.SIEVE file.
1993
139059f6 1994 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1995 computation of the current number of files was incorrect.
495ae4b0 1996
7086e875
PH
1997 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1998 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1999 place.
2000
35af9f61
PH
2001 4. Give more explanation in the error message when the command for a transport
2002 filter fails to execute.
2003
b668c215
PH
2004 5. There are several places where Exim runs a non-Exim command in a
2005 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2006 was being done only for the command run by the queryprogram router. It is
2007 now done for all such subprocesses. The other cases are: ${run, transport
2008 filters, and the commands run by the lmtp and pipe transports.
2009
a494b1e1
PH
2010 6. Added CONFIGURE_GROUP build-time option.
2011
2012 7. Some older OS have a limit of 256 on the maximum number of file
2013 descriptors. Exim was using setrlimit() to set 1000 as a large value
2014 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2015 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2016
c5fcb476
PH
2017 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2018 was an oversight, and furthermore, ever since the addition of extra
2019 controls (e.g. 4.43/32), the checks on when to allow different forms of
2020 "control" were broken. There should now be diagnostics for all cases when a
2021 control that does not make sense is encountered.
2022
69358f02
PH
2023 9. Added the /retain_sender option to "control=submission".
2024
5be20824
PH
202510. $recipients is now available in the predata ACL (oversight).
2026
eb2c0248
PH
202711. Tidy the search cache before the fork to do a delivery from a message
2028 received from the command line. Otherwise the child will trigger a lookup
2029 failure and thereby defer the delivery if it tries to use (for example) a
2030 cached ldap connection that the parent has called unbind on.
2031
2a3eea10
PH
203212. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2033 of $address_data from the recipient verification was clobbered by the
2034 sender verification.
2035
203613. The value of address_data from a sender verification is now available in
2037 $sender_address_data in subsequent conditions in the ACL statement.
2038
23c7ff99
PH
203914. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2040
4deaf07d
PH
204115. Added a new option "connect=<time>" to callout options, to set a different
2042 connection timeout.
2043
926e1192
PH
204416. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2045 was its contents. (It was OK if the option was not defined at all.)
2046
650edc6f
PH
204717. A "Completed" log line is now written for messages that are removed from
2048 the spool by the -Mrm option.
2049
2c7db3f5
PH
205018. New variables $sender_verify_failure and $recipient_verify_failure contain
2051 information about exactly what failed.
2052
3d235903
PH
205319. Added -dd to debug only the daemon process.
2054
7c7ad977
PH
205520. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2056 handles timeouts, both on the server side and network timeouts. Renamed the
2057 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2058
981756db
PH
205921. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2060 It is now set to "smtps".
2061
d4eb88df
PH
206222. $host_address is now set to the target address during the checking of
2063 ignore_target_hosts.
2064
206523. When checking ignore_target_hosts for an ipliteral router, no host name was
2066 being passed; this would have caused $sender_host_name to have been used if
2067 matching the list had actually called for a host name (not very likely,
2068 since this list is usually IP addresses). A host name is now passed as
2069 "[x.x.x.x]".
2070
7d468ab8
PH
207124. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2072 code that specifies a non-restarting handler (typically sigaction() in
2073 modern systems) in an attempt to fix a rare and obscure crash bug.
2074
207525. Narrowed the window for a race in the daemon that could cause it to ignore
2076 SIGCHLD signals. This is not a major problem, because they are used only to
2077 wake it up if nothing else does.
2078
62c0818f
PH
207926. A malformed maildirsize file could cause Exim to calculate negative values
2080 for the mailbox size or file count. Odd effects could occur as a result.
2081 The maildirsize information is now recalculated if the size or filecount
2082 end up negative.
2083
26034054
PH
208427. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2085 support for a long time. Removed HAVE_SYS_VFS_H.
2086
af66f652
PH
208728. Installed the latest version of exipick from John Jetmore.
2088
90af77f4
PH
208929. In an address list, if the pattern was not a regular expression, an empty
2090 subject address (from a bounce message) matched only if the pattern was an
2091 empty string. Non-empty patterns were not even tested. This was the wrong
2092 because it is perfectly reasonable to use an empty address as part of a
2093 database query. An empty address is now tested by patterns that are
2094 lookups. However, all the other forms of pattern expect the subject to
2095 contain a local part and a domain, and therefore, for them, an empty
2096 address still always fails if the pattern is not itself empty.
2097
d8ef3577
PH
209830. Exim went into a mad DNS loop when attempting to do a callout where the
2099 host was specified on an smtp transport, and looking it up yielded more
2100 than one IP address.
2101
5cb8cbc6
PH
210231. Re-factored the code for checking spool and log partition space into a
2103 function that finds that data and another that does the check. The former
2104 is then used to implement four new variables: $spool_space, $log_space,
2105 $spool_inodes, and $log_inodes.
2106
14702f5b
PH
210732. The RFC2047 encoding function was originally intended for short strings
2108 such as real names; it was not keeping to the 75-character limit for
2109 encoded words that the RFC imposes. It now respects the limit, and
2110 generates multiple encoded words if necessary. To be on the safe side, I
2111 have increased the buffer size for the ${rfc2047: expansion operator from
2112 1024 to 2048 bytes.
2113
063b1e99
PH
211433. It is now permitted to omit both strings after an "if" condition; if the
2115 condition is true, the result is "true". As before, when the second string
2116 is omitted, a false condition yields an empty string. This makes it less
2117 cumbersome to write custom ACL and router conditions.
2118
652e1b65
PH
211934. Failure to deliver a bounce message always caused it to be frozen, even if
2120 there was an errors_to setting on the router. The errors_to setting is now
2121 respected.
2122
6f0c9a4f
PH
212335. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2124 canonical form (fully expanded) before being placed in
2125 $sender_host_address.
2126
33397d19
PH
212736. The table in the code that translates DNS record types into text (T_A to
2128 "A" for instance) was missing entries for NS and CNAME. It is just possible
2129 that this could have caused confusion if both these types were looked up
2130 for the same domain, because the text type is used as part of Exim's
2131 per-process caching. But the chance of anyone hitting this buglet seems
2132 very small.
2133
7bb56e1f
PH
213437. The dnsdb lookup has been extended in a number of ways.
2135
2136 (1) There is a new type, "zns", which walks up the domain tree until it
2137 finds some nameserver records. It should be used with care.
2138
ea3bc19b
PH
2139 (2) There is a new type, "mxh", which is like "mx" except that it returns
2140 just the host names, not the priorities.
2141
2142 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2143 looked up. The behaviour when one of the lookups defers can be
2144 controlled by a keyword.
7bb56e1f 2145
ea3bc19b 2146 (4) It is now possible to specify the separator character for use when
7bb56e1f 2147 multiple records are returned.
33397d19 2148
0bcb2a0e
PH
214938. The dnslists ACL condition has been extended: it is now possible to supply
2150 a list of IP addresses and/or domains to be looked up in a particular DNS
2151 domain.
2152
2ac0e484
PH
215339. Added log_selector=+queue_time_overall.
2154
4e1fde53
PH
215540. When running the queue in the test harness, wait just a tad after forking a
2156 delivery process, to get repeatability of debugging output.
2157
de365ded
PH
215841. Include certificate and key file names in error message when GnuTLS fails
2159 to set them up, because the GnuTLS error message doesn't include the name
2160 of the failing file when there is a problem reading it.
2161
f05da2e8
PH
216242. Allow both -bf and -bF in the same test run.
2163
d6453af2
PH
216443. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2165
f7b63901
PH
216644. The "Exiscan patch" is now merged into the mainline Exim source.
2167
216845. Sometimes the final signoff response after QUIT could fail to get
2169 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2170 < 0 before doing a fflush(). This bug looks as though it goes back to the
2171 introduction of TLS in release 3.20, but "sometimes" must have been rare
2172 because the tests only now provoked it.
2173
a444213a
PH
217446. Reset the locale to "C" after calling embedded Perl, in case it was changed
2175 (this can affect the format of dates).
2176
0ec020ea
PH
217747. exim_tidydb, when checking for the continued existence of a message for
2178 which it has found a message-specific retry record, was not finding
2179 messages that were in split spool directories. Consequently, it was
2180 deleting retry records that should have stayed in existence.
2181
b1206957
PH
218248. Steve fixed some bugs in eximstats.
2183
218449. The SPA authentication driver was not abandoning authentication and moving
2185 on to the next authenticator when an expansion was forced to fail,
2186 contradicting the general specification for all authenticators. Instead it
2187 was generating a temporary error. It now behaves as specified.
2188
26dd5a95
PH
218950. The default ordering of permitted cipher suites for GnuTLS was pessimal
2190 (the order specifies the preference for clients). The order is now AES256,
2191 AES128, 3DES, ARCFOUR128.
2192
343b2385
PH
219351. Small patch to Sieve code - explicitly set From: when generating an
2194 autoreply.
2195
1c5466b9
PH
219652. Exim crashed if a remote delivery caused a very long error message to be
2197 recorded - for instance if somebody sent an entire SpamAssassin report back
2198 as a large number of 550 error lines. This bug was coincidentally fixed by
2199 increasing the size of one of Exim's internal buffers (big_buffer) that
2200 happened as part of the Exiscan merge. However, to be on the safe side, I
2201 have made the code more robust (and fixed the comments that describe what
2202 is going on).
2203
55ee9ee3
PH
220453. Now that there can be additional text after "Completed" in log lines (if
2205 the queue_time_overall log selector is set), a one-byte patch to exigrep
2206 was needed to allow it to recognize "Completed" as not the last thing in
2207 the line.
2208
d38f8232
PH
220954. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2210 patch that reportedly fixes this has been added. I am not expert enough to
2211 create a test for it. This is what the patch creator wrote:
2212
2213 "I found a little strange behaviour of ldap code when working with
2214 Windows 2003 AD Domain, where users was placed in more than one
2215 Organization Units. When I tried to give exim partial DN, the exit code
2216 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2217 But simultaneously result of request was absolutely normal ldap result,
2218 so I produce this patch..."
2219
3295e65b
PH
2220 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2221 REFERENCE, so I have modified the code to exclude the patch when that macro
2222 is not defined.
2223
7102e136
PH
222455. Some experimental protocols are using DNS PTR records for new purposes. The
2225 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2226 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2227 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2228 CAN-2005-0021
7102e136 2229
3ca0ba97
PH
223056. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2231
c2bcbe20
PH
223257. Double the size of the debug message buffer (to 2048) so that more of very
2233 long debug lines gets shown.
2234
18ce445d
PH
223558. The exicyclog utility now does better if the number of log files to keep
2236 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2237
1f5b4c3d
PH
223859. Two changes related to the smtp_active_hostname option:
2239
2240 (1) $smtp_active_hostname is now available as a variable.
2241 (2) The default for smtp_banner uses $smtp_active_hostname instead
2242 of $primary_hostname.
2243
b975ba52
PH
224460. The host_aton() function is supposed to be passed a string that is known
2245 to be a valid IP address. However, in the case of IPv6 addresses, it was
2246 not checking this. This is a hostage to fortune. Exim now panics and dies
2247 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2248 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2249 components; fortuitously, this particular loophole had already been fixed
2250 by change 4.50/55 above.
2251
2252 If there are any other similar loopholes, the new check in host_aton()
2253 itself should stop them being exploited. The report I received stated that
2254 data on the command line could provoke the exploit when Exim was running as
2255 exim, but did not say which command line option was involved. All I could
2256 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2257 running as the user.
ea3a6f44 2258 CAN-2005-0021
85b87bc2
PH
2259
226061. There was a buffer overflow vulnerability in the SPA authentication code
2261 (which came originally from the Samba project). I have added a test to the
2262 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2263 CAN-2005-0022
b975ba52 2264
17ffcae7
PH
226562. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2266 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2267
d95f9fdb
PH
226863. The daemon start-up calls getloadavg() while still root for those OS that
2269 need the first call to be done as root, but it missed one case: when
2270 deliver_queue_load_max is set with deliver_drop_privilege. This is
2271 necessary for the benefit of the queue runner, because there is no re-exec
2272 when deliver_drop_privilege is set.
2273
86b8287f
PH
227464. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2275 This has been fixed.
2276
60dc5e56
PH
227765. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2278 was in use, was not putting the data itself into the right store pool;
2279 consequently, it could be overwritten for a subsequent message in the same
2280 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2281 the caching.)
2282
533244af
PH
228366. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2284
a5a28604
PH
228567. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2286 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2287 the function were treating the return as a boolean value, which happened to
2288 work because 0=false and not-0=true, but is not correct code.
2289
7e634d24
PH
229068. The host_aton() function was not handling scoped IPv6 addresses (those
2291 with, for example, "%eth0" on the end) correctly.
2292
3e11c26b
PH
229369. Fixed some compiler warnings in acl.c for the bitmaps specified with
2294 negated items (that is, ~something) in unsigned ints. Some compilers
2295 apparently mutter when there is no cast.
2296
6729cf78
PH
229770. If an address verification called from an ACL failed, and did not produce a
2298 user-specific message (i.e. there was only a "system" message), nothing was
2299 put in $acl_verify_message. In this situation, it now puts the system
2300 message there.
2301
00f00ca5
PH
230271. Change 4.23/11 added synchronization checking at the start of an SMTP
2303 session; change 4.31/43 added the unwanted input to the log line - except
2304 that it did not do this in the start of session case. It now does.
2305
c9bdd01c
PH
230672. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2307 This is wrong and can cause the other end to generate a synchronization
2308 error if it is another Exim or anything else that does the synchronization
2309 check. A QUIT command is no longer sent after a timeout.
2310
d43194df
PH
231173. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2312 during host lookups.
2313
fe5b5d0b
PH
231474. The defer_ok option of callout verification was not working if it was used
2315 when verifying addresses in header lines, that is, for this case:
2316
2317 verify = header_sender/callout=defer_ok
2318
76a2d7ba
PH
231975. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2320 those file descriptors could be used for SMTP connections. If anything
2321 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2322 could be sent to the SMTP client, causing chaos. The daemon now opens
2323 stdin, stdout, and stderr to /dev/null when it puts itself into the
2324 background.
2325
232676. Arrange for output from Perl's "warn" command to be written to Exim's main
2327 log by default. The user can override this with suitable Perl magic.
2328
04f7d5b9
PH
232977. The use of log_message on a "discard" ACL verb, which is supposed to add to
2330 the log message when discard triggers, was not working for the DATA ACL or
2331 for the non-SMTP ACL.
2332
bc60667e
PH
233378. Error message wording change in sieve.c.
2334
bb6e88ff
PH
233579. If smtp_accept_max_per_host was set, the number of connections could be
2336 restricted to fewer than expected, because the daemon was trying to set up
2337 a new connection before checking whether the processes handling previous
2338 connections had finished. The check for completed processes is now done
2339 earlier. On busy systems, this bug wouldn't be noticed because something
2340 else would have woken the daemon, and it would have reaped the completed
2341 process earlier.
2342
1e70f85b
PH
234380. If a message was submitted locally by a user whose login name contained one
2344 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2345 It caused a spool format error. I have fixed the spool reading code. A
2346 related problem was that the "from" clause in the Received: line became
2347 illegal because of the space(s). It is now covered by ${quote_local_part.
2348
234981. Included the latest eximstats from Steve (adds average sizes to HTML Top
2350 tables).
2351
4e01f9d6
PH
235282. Updated OS/Makefile-AIX as per message from Mike Meredith.
2353
1ee1cef2
PH
235483. Patch from Sieve maintainer to fix unterminated string problem in
2355 "vacation" handling.
2356
6e2b4ccc
PH
235784. Some minor changes to the Linux configuration files to help with other
2358 OS variants using glibc.
2359
8e669ac1
PH
236085. One more patch for Sieve to update vacation handling to latest spec.
2361
495ae4b0 2362
bbe902f0
PH
2363----------------------------------------------------
2364See the note above about the 4.44 and 4.50 releases.
2365----------------------------------------------------
2366
2367
2368Exim version 4.44
2369-----------------
2370
2371 1. Change 4.43/35 introduced a bug that caused file counts to be
2372 incorrectly computed when quota_filecount was set in an appendfile
2373 transport
2374
2375 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2376 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2377 place.
2378
2379 3. Give more explanation in the error message when the command for a transport
2380 filter fails to execute.
2381
2382 4. There are several places where Exim runs a non-Exim command in a
2383 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2384 was being done only for the command run by the queryprogram router. It is
2385 now done for all such subprocesses. The other cases are: ${run, transport
2386 filters, and the commands run by the lmtp and pipe transports.
2387
2388 5. Some older OS have a limit of 256 on the maximum number of file
2389 descriptors. Exim was using setrlimit() to set 1000 as a large value
2390 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2391 systems. I've change it so that if it can't get 1000, it tries for 256.
2392
2393 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2394 was an oversight, and furthermore, ever since the addition of extra
2395 controls (e.g. 4.43/32), the checks on when to allow different forms of
2396 "control" were broken. There should now be diagnostics for all cases when a
2397 control that does not make sense is encountered.
2398
2399 7. $recipients is now available in the predata ACL (oversight).
2400
2401 8. Tidy the search cache before the fork to do a delivery from a message
2402 received from the command line. Otherwise the child will trigger a lookup
2403 failure and thereby defer the delivery if it tries to use (for example) a
2404 cached ldap connection that the parent has called unbind on.
2405
2406 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2407 of $address_data from the recipient verification was clobbered by the
2408 sender verification.
2409
241010. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2411 was its contents. (It was OK if the option was not defined at all.)
2412
241311. A "Completed" log line is now written for messages that are removed from
2414 the spool by the -Mrm option.
2415
241612. $host_address is now set to the target address during the checking of
2417 ignore_target_hosts.
2418
241913. When checking ignore_target_hosts for an ipliteral router, no host name was
2420 being passed; this would have caused $sender_host_name to have been used if
2421 matching the list had actually called for a host name (not very likely,
2422 since this list is usually IP addresses). A host name is now passed as
2423 "[x.x.x.x]".
2424
242514. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2426 code that specifies a non-restarting handler (typically sigaction() in
2427 modern systems) in an attempt to fix a rare and obscure crash bug.
2428
242915. Narrowed the window for a race in the daemon that could cause it to ignore
2430 SIGCHLD signals. This is not a major problem, because they are used only to
2431 wake it up if nothing else does.
2432
243316. A malformed maildirsize file could cause Exim to calculate negative values
2434 for the mailbox size or file count. Odd effects could occur as a result.
2435 The maildirsize information is now recalculated if the size or filecount
2436 end up negative.
2437
243817. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2439 support for a long time. Removed HAVE_SYS_VFS_H.
2440
ea3a6f44 244118. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2442
244319. Allow an empty sender to be matched against a lookup in an address list.
2444 Previously the only cases considered were a regular expression, or an
2445 empty pattern.
2446
244720. Exim went into a mad DNS lookup loop when doing a callout where the
2448 host was specified on the transport, if the DNS lookup yielded more than
2449 one IP address.
2450
ea3a6f44
NM
245121. The RFC2047 encoding function was originally intended for short strings
2452 such as real names; it was not keeping to the 75-character limit for
2453 encoded words that the RFC imposes. It now respects the limit, and
2454 generates multiple encoded words if necessary. To be on the safe side, I
2455 have increased the buffer size for the ${rfc2047: expansion operator from
2456 1024 to 2048 bytes.
bbe902f0 2457
ea3a6f44
NM
245822. Failure to deliver a bounce message always caused it to be frozen, even if
2459 there was an errors_to setting on the router. The errors_to setting is now
2460 respected.
bbe902f0
PH
2461
246223. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2463 canonical form (fully expanded) before being placed in
2464 $sender_host_address.
2465
246624. Updated eximstats to version 1.33
2467
ea3a6f44
NM
246825. Include certificate and key file names in error message when GnuTLS fails
2469 to set them up, because the GnuTLS error message doesn't include the name
2470 of the failing file when there is a problem reading it.
bbe902f0
PH
2471
247226. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2473 As per change 25.
bbe902f0 2474
ea3a6f44
NM
247527. Reset the locale to "C" after calling embedded Perl, in case it was changed
2476 (this can affect the format of dates).
bbe902f0 2477
ea3a6f44
NM
247828. exim_tidydb, when checking for the continued existence of a message for
2479 which it has found a message-specific retry record, was not finding
2480 messages that were in split spool directories. Consequently, it was
2481 deleting retry records that should have stayed in existence.
bbe902f0
PH
2482
248329. eximstats updated to version 1.35
2484 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2485 1.35 - bugfix such that pie charts by volume are generated correctly
2486
ea3a6f44
NM
248730. The SPA authentication driver was not abandoning authentication and moving
2488 on to the next authenticator when an expansion was forced to fail,
2489 contradicting the general specification for all authenticators. Instead it
2490 was generating a temporary error. It now behaves as specified.
bbe902f0 2491
ea3a6f44
NM
249231. The default ordering of permitted cipher suites for GnuTLS was pessimal
2493 (the order specifies the preference for clients). The order is now AES256,
2494 AES128, 3DES, ARCFOUR128.
bbe902f0 2495
ea3a6f44
NM
249631. Small patch to Sieve code - explicitly set From: when generating an
2497 autoreply.
bbe902f0 2498
ea3a6f44
NM
249932. Exim crashed if a remote delivery caused a very long error message to be
2500 recorded - for instance if somebody sent an entire SpamAssassin report back
2501 as a large number of 550 error lines. This bug was coincidentally fixed by
2502 increasing the size of one of Exim's internal buffers (big_buffer) that
2503 happened as part of the Exiscan merge. However, to be on the safe side, I
2504 have made the code more robust (and fixed the comments that describe what
2505 is going on).
bbe902f0 2506
ea3a6f44
NM
250733. Some experimental protocols are using DNS PTR records for new purposes. The
2508 keys for these records are domain names, not reversed IP addresses. The
2509 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2510 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2511 CAN-2005-0021
2512
ea3a6f44
NM
251334. The host_aton() function is supposed to be passed a string that is known
2514 to be a valid IP address. However, in the case of IPv6 addresses, it was
2515 not checking this. This is a hostage to fortune. Exim now panics and dies
2516 if the condition is not met. A case was found where this could be provoked
2517 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2518 components; fortuitously, this particular loophole had already been fixed
2519 by change 4.50/55 or 4.44/33 above.
2520
2521 If there are any other similar loopholes, the new check in host_aton()
2522 itself should stop them being exploited. The report I received stated that
2523 data on the command line could provoke the exploit when Exim was running as
2524 exim, but did not say which command line option was involved. All I could
2525 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2526 running as the user.
bbe902f0
PH
2527 CAN-2005-0021
2528
ea3a6f44
NM
252935. There was a buffer overflow vulnerability in the SPA authentication code
2530 (which came originally from the Samba project). I have added a test to the
2531 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2532 CAN-2005-0022
2533
ea3a6f44
NM
253436. The daemon start-up calls getloadavg() while still root for those OS that
2535 need the first call to be done as root, but it missed one case: when
2536 deliver_queue_load_max is set with deliver_drop_privilege. This is
2537 necessary for the benefit of the queue runner, because there is no re-exec
2538 when deliver_drop_privilege is set.
bbe902f0 2539
ea3a6f44
NM
254037. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2541 was in use, was not putting the data itself into the right store pool;
2542 consequently, it could be overwritten for a subsequent message in the same
2543 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2544 the caching.)
bbe902f0 2545
ea3a6f44
NM
254638. Sometimes the final signoff response after QUIT could fail to get
2547 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2548 < 0 before doing a fflush(). This bug looks as though it goes back to the
2549 introduction of TLS in release 3.20, but "sometimes" must have been rare
2550 because the tests only now provoked it.
bbe902f0
PH
2551
2552
495ae4b0
PH
2553Exim version 4.43
2554-----------------
2555
2556 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2557 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2558 Now it returns an integer. A number of calls were still expecting a T/F
2559 return. Fortuitously, in all cases, the tests worked in OK situations,
2560 which is the norm. However, things would have gone wrong on any write
2561 failures on the smtp file descriptor. This function is used when sending
2562 messages over SMTP and also when doing verify callouts.
2563
2564 2. When Exim is called to do synchronous delivery of a locally submitted
2565 message (the -odf or -odi options), it no longer closes stderr before doing
2566 the delivery.
2567
2568 3. Implemented the mua_wrapper option.
2569
2570 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2571
2572 5. Implemented the functions header_remove(), header_testname(),
2573 header_add_at_position(), and receive_remove_recipient(), and exported them
2574 to local_scan().
2575
2576 6. If an ACL "warn" statement specified the addition of headers, Exim already
2577 inserted X-ACL-Warn: at the start if there was no header name. However, it
2578 was not making this test for the second and subsequent header lines if
2579 there were newlines in the string. This meant that an invalid header could
2580 be inserted if Exim was badly configured.
2581
2582 7. Allow an ACL "warn" statement to add header lines at the start or after all
2583 the Received: headers, as well as at the end.
2584
2585 8. Added the rcpt_4xx retry error code.
2586
2587 9. Added postmaster_mailfrom=xxx to callout verification option.
2588
258910. Added mailfrom=xxxx to the callout verification option, for verify=
2590 header_sender only.
2591
259211. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2593 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2594
259512. Inserted some casts to stop certain compilers warning when using pointer
2596 differences as field lengths or precisions in printf-type calls (mostly
2597 affecting debugging statements).
2598
259913. Added optional readline() support for -be (dynamically loaded).
2600
260114. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2602 same clock tick as a message's arrival, so that its received time was the
2603 same as the "first fail" time on the retry record, and that message
2604 remained on the queue past the ultimate address timeout, every queue runner
2605 would try a delivery (because it was past the ultimate address timeout) but
2606 after another failure, the ultimate address timeout, which should have then
2607 bounced the address, did not kick in. This was a "< instead of <=" error;
2608 in most cases the first failure would have been in the next clock tick
2609 after the received time, and all would be well.
2610
261115. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2612 being recognized when the domain list was tested by the match_domain
2613 condition in an expansion string.
2614
261516. Added the ${str2b64: operator.
2616
261717. Exim was always calling setrlimit() to set a large limit for the number of
2618 processes, without checking whether the existing limit was already
2619 adequate. (It did check for the limit on file descriptors.) Furthermore,
2620 errors from getrlimit() and setrlimit() were being ignored. Now they are
2621 logged to the main and panic logs, but Exim does carry on, to try to do its
2622 job under whatever limits there are.
2623
262418. Imported PCRE 5.0.
2625
262619. Trivial typo in log message " temporarily refused connection" (the leading
2627 space).
2628
262920. If the log selector return_path_on_delivery was set and an address was
2630 redirected to /dev/null, the delivery process crashed because it assumed
2631 that a return path would always be set for a "successful" delivery. In this
2632 case, the whole delivery is bypassed as an optimization, and therefore no
2633 return path is set.
2634
263521. Internal re-arrangement: the function for sending a challenge and reading
2636 a response while authentication was assuming a zero-terminated challenge
2637 string. It's now changed to take a pointer and a length, to allow for
2638 binary data in such strings.
2639
264022. Added the cyrus_sasl authenticator (code supplied by MBM).
2641
264223. Exim was not respecting finduser_retries when seeking the login of the
2643 uid under which it was called; it was always trying 10 times. (The default
2644 setting of finduser_retries is zero.) Also, it was sleeping after the final
2645 failure, which is pointless.
2646
264724. Implemented tls_on_connect_ports.
2648
264925. Implemented acl_smtp_predata.
2650
265126. If the domain in control=submission is set empty, Exim assumes that the
2652 authenticated id is a complete email address when it generates From: or
2653 Sender: header lines.
2654
265527. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2656 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2657 chown and chgrp in /bin and hostname in /usr/bin.
2658
265928. Exim was keeping the "process log" file open after each use, just as it
2660 does for the main log. This opens the possibility of it remaining open for
2661 long periods when the USR1 signal hits a daemon. Occasional processlog
2662 errors were reported, that could have been caused by this. Anyway, it seems
2663 much more sensible not to leave this file open at all, so that is what now
2664 happens.
2665
266629. The long-running daemon process does not normally write to the log once it
2667 has entered its main loop, and it closes the log before doing so. This is
2668 so that log files can straightforwardly be renamed and moved. However,
2669 there are a couple of unusual error situations where the daemon does write
2670 log entries, and I had neglected to close the log afterwards.
2671
267230. The text of an SMTP error response that was received during a remote
2673 delivery was being truncated at 512 bytes. This is too short for some of
2674 the long messages that one sometimes sees. I've increased the limit to
2675 1024.
2676
267731. It is now possible to make retry rules that apply only when a message has a
2678 specific sender, in particular, an empty sender.
2679
268032. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2681 it possible to be selective about when SMTP synchronization is enforced.
2682
268333. Added "control = caseful_local_part" and "control = "caselower_local_part".
2684
268532. Implemented hosts_connection_nolog.
2686
268733. Added an ACL for QUIT.
2688
268934. Setting "delay_warning=" to disable warnings was not working; it gave a
2690 syntax error.
2691
269235. Added mailbox_size and mailbox_filecount to appendfile.
2693
269436. Added control = no_multiline_responses to ACLs.
2695
269637. There was a bug in the logic of the code that waits for the clock to tick
2697 in the case where the clock went backwards by a substantial amount such
2698 that the microsecond fraction of "now" was more than the microsecond
2699 fraction of "then" (but the whole seconds number was less).
2700
270138. Added support for the libradius Radius client library this is found on
2702 FreeBSD (previously only the radiusclient library was supported).
2703
2704
2705Exim version 4.42
2706-----------------
2707
2708 1. When certain lookups returned multiple values in the form name=value, the
2709 quoting of the values was not always being done properly. Specifically:
2710 (a) If the value started with a double quote, but contained no whitespace,
2711 it was not quoted.
2712 (b) If the value contained whitespace other than a space character (i.e.
2713 tabs or newlines or carriage returns) it was not quoted.
2714 This fix has been applied to the mysql and pgsql lookups by writing a
2715 separate quoting function and calling it from the lookup code. The fix
2716 should probably also be applied to nisplus, ibase and oracle lookups, but
2717 since I cannot test any of those, I have not disturbed their existing code.
2718
2719 2. A hit in the callout cache for a specific address caused a log line with no
2720 reason for rejecting RCPT. Now it says "Previous (cached) callout
2721 verification failure".
2722
2723 3. There was an off-by-one bug in the queryprogram router. An over-long
2724 return line was truncated at 256 instead of 255 characters, thereby
2725 overflowing its buffer with the terminating zero. As well as fixing this, I
2726 have increased the buffer size to 1024 (and made a note to document this).
2727
2728 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2729 when Exim is waiting for an SMTP response from a remote server, Exim
2730 restarts its select() call on the socket, thereby resetting its timeout.
2731 This is not a problem when such interrupts are rare. Somebody set up a cron
2732 job to run exiwhat every 2 minutes, which is less than the normal select()
2733 timeout (5 or 10 minutes). This meant that the select() timeout never
2734 kicked in because it was always reset. I have fixed this by comparing the
2735 time when an interrupt arrives with the time at the start of the first call
2736 to select(). If more time than the timeout has elapsed, the interrupt is
2737 treated as a timeout.
2738
2739 5. Some internal re-factoring in preparation for the addition of Sieve
2740 extensions (by MH). In particular, the "personal" test is moved to a
2741 separate function, and given an option for scanning Cc: and Bcc: (which is
2742 not set for Exim filters).
2743
2744 6. When Exim created an email address using the login of the caller as the
2745 local part (e.g. when creating a From: or Sender: header line), it was not
2746 quoting the local part when it contained special characters such as @.
2747
2748 7. Installed new OpenBSD configuration files.
2749
2750 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2751 try to make them clearer.
2752
2753 9. Callout options, other than the timeout value, were being ignored when
2754 verifying sender addresses in header lines. For example, when using
2755
2756 verify = header_sender/callout=no_cache
2757
2758 the cache was (incorrectly) being used.
2759
276010. Added a missing instance of ${EXE} to the exim_install script; this affects
2761 only the Cygwin environment.
2762
276311. When return_path_on_delivery was set as a log selector, if different remote
2764 addresses in the same message used different return paths and parallel
2765 remote delivery occurred, the wrong values would sometimes be logged.
2766 (Whenever a remote delivery process finished, the return path value from
2767 the most recently started remote delivery process was logged.)
2768
276912. RFC 3848 specifies standard names for the "with" phrase in Received: header
2770 lines when AUTH and/or TLS are in use. This is the "received protocol"
2771 field. Exim used to use "asmtp" for authenticated SMTP, without any
2772 indication (in the protocol name) for TLS use. Now it follows the RFC and
2773 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2774 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2775 names appear in log lines as well as in Received: header lines.
2776
277713. Installed MH's patches for Sieve to add the "copy" and "vacation"
2778 extensions, and comparison tests, and to fix some bugs.
2779
278014. Changes to the "personal" filter test:
2781
2782 (1) The test was buggy in that it was just doing the equivalent of
2783 "contains" tests on header lines. For example, if a user's address was
2784 anne@some.where, the "personal" test would incorrectly be true for
2785
2786 To: susanne@some.where
2787
2788 This test is now done by extracting each address from the header in turn,
2789 and checking the entire address. Other tests that are part of "personal"
2790 are now done using regular expressions (for example, to check local parts
2791 of addresses in From: header lines).
2792
2793 (2) The list of non-personal local parts in From: addresses has been
2794 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2795 taken from the Sieve specification recommendations.
2796
2797 (3) If the message contains any header line starting with "List-" it is
2798 treated as non-personal.
2799
2800 (4) The test for "circular" in the Subject: header line has been removed
2801 because it now seems ill-conceived.
2802
280315. Minor typos in src/EDITME comments corrected.
2804
280516. Installed latest exipick from John Jetmore.
2806
280717. If headers_add on a router specified a text string that was too long for
2808 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2809 of string_sprintf() is now avoided.
2810
281118. $message_body_size was not set (it was always zero) when running the DATA
2812 ACL and the local_scan() function.
2813
281419. For the "mail" command in an Exim filter, no default was being set for
2815 the once_repeat time, causing a random time value to be used if "once" was
2816 specified. (If the value happened to be <= 0, no repeat happened.) The
2817 default is now 0s, meaning "never repeat". The "vacation" command was OK
2818 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2819 (I found it when inspecting the code).
2820
282120. There is now an overall timeout for performing a callout verification. It
2822 defaults to 4 times the callout timeout, which applies to individual SMTP
2823 commands during the callout. The overall timeout applies when there is more
2824 than one host that can be tried. The timeout is checked before trying the
2825 next host. This prevents very long delays if there are a large number of
2826 hosts and all are timing out (e.g. when the network connections are timing
2827 out). The value of the overall timeout can be changed by specifying an
2828 additional sub-option for "callout", called "maxwait". For example:
2829
2830 verify = sender/callout=5s,maxwait=20s
2831
283221. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2833 to the end before writing, but this should make it even safer).
2834
283522. Exim was forgetting that it had advertised PIPELINING for the second and
2836 subsequent messages on an SMTP connection. It was also not resetting its
2837 memory on STARTTLS and an internal HELO.
2838
283923. When Exim logs an SMTP synchronization error within a session, it now
2840 records whether PIPELINING has been advertised or not.
2841
284224. Added 3 instances of "(long int)" casts to time_t variables that were being
2843 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2844 rather than long int.
2845
284625. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2847
284826. Added the never_mail option to autoreply.
2849
2850
2851Exim version 4.41
2852-----------------
2853
2854 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2855 crash if the getsockname() call failed; this can happen if a connection is
2856 closed very soon after it is established. The problem was simply in the
2857 order in which certain operations were done, causing Exim to try to write
2858 to the SMTP stream before it had set up the file descriptor. The bug has
2859 been fixed by making things happen in the correct order.
2860
2861
2862Exim version 4.40
2863-----------------
2864
2865 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2866 before the connection was closed, thus losing the rejection response.
2867
2868 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2869 some early Solaris releases, but causes trouble in current releases where
2870 socklen_t is defined.
2871
2872 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2873 always exist.
2874
2875 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2876 configured.
2877
2878 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2879 that releasing the top of it at the end releases what was used for sub-
2880 expansions (unless the block got too big). However, discard this block if
2881 the first thing is a variable or header, so that we can use its block when
2882 it is dynamic (useful for very large $message_headers, for example).
2883
2884 6. Lookups now cache *every* query, not just the most recent. A new, separate
2885 store pool is used for this. It can be recovered when all lookup caches are
2886 flushed. Lookups now release memory at the end of their result strings.
2887 This has involved some general refactoring of the lookup sources.
2888
2889 7. Some code has been added to the store_xxx() functions to reduce the amount
2890 of flapping under certain conditions.
2891
2892 8. log_incoming_interface used to affect only the <= reception log lines. Now
2893 it causes the local interface and port to be added to several more SMTP log
2894 lines, for example "SMTP connection from", and rejection lines.
2895
2896 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2897
289810. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2899
290011. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2901 could be overwritten at the end of the current message (or the start of a
2902 new message if it was set in a HELO ACL). The value is now preserved for
2903 the duration of the SMTP connection.
2904
290512. If a transport had a headers_rewrite setting, and a matching header line
2906 contained an unqualified address, that address was qualified, even if it
2907 did not match any rewriting rules. The underlying bug was that the values
2908 of the flags that permit the existence of unqualified sender and recipient
2909 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2910 non-local messages, and by -bnq for local messages) were not being
2911 preserved with the message after it was received.
2912
291313. When Exim was logging an SMTP synchronization error, it could sometimes log
2914 "next input=" as part of the text comprising the host identity instead of
2915 the correct text. The code was using the same buffer for two different
2916 strings. However, depending on which order the printing function evaluated
2917 its arguments, the bug did not always show up. Under Linux, for example, my
2918 test suite worked just fine.
2919
292014. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2921 doesn't work with some older versions of Perl. It has been changed to "my",
2922 which in any case is probably the better facility to use.
2923
292415. A really picky compiler found some instances of statements for creating
2925 error messages that either had too many or two few arguments for the format
2926 string.
2927
292816. The size of the buffer for calls to the DNS resolver has been increased
2929 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2930 for addresses that have a lot of PTR records. This alleviates a problem; it
2931 does not fully solve it.
2932
293317. A dnsdb lookup for PTR records that receives more data than will fit in the
2934 buffer now truncates the list and logs the incident, which is the same
2935 action as happens when Exim is looking up a host name and its aliases.
2936 Previously in this situation something unpredictable would happen;
2937 sometimes it was "internal error: store_reset failed".
2938
293918. If a server dropped the connection unexpectedly when an Exim client was
2940 using GnuTLS and trying to read a response, the client delivery process
2941 crashed while trying to generate an error log message.
2942
294319. If a "warn" verb in an ACL added multiple headers to a message in a single
2944 string, for example:
2945
2946 warn message = H1: something\nH2: something
2947
2948 the text was added as a single header line from Exim's point of view
2949 though it ended up OK in the delivered message. However, searching for the
2950 second and subsequent header lines using $h_h2: did not work. This has been
2951 fixed. Similarly, if a system filter added multiple headers in this way,
2952 the routers could not see them.
2953
295420. Expanded the error message when iplsearch is called with an invalid key to
2955 suggest using net-iplsearch in a host list.
2956
295721. When running tests using -bh, any delays imposed by "delay" modifiers in
2958 ACLs are no longer actually imposed (and a message to that effect is
2959 output).
2960
296122. If a "gecos" field in a passwd entry contained escaped characters, in
2962 particular, if it contained a \" sequence, Exim got it wrong when building
2963 a From: or a Sender: header from that name. A second bug also caused
2964 incorrect handling when an unquoted " was present following a character
2965 that needed quoting.
2966
296723. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2968 was not being matched caselessly.
2969
297024. Arranged for all hyphens in the exim.8 source to be escaped with
2971 backslashes.
2972
297325. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2974 properly. Recipient callout cache records were still being keyed to include
2975 the sender, even when use_sender was set false. This led to far more
2976 callouts that were necessary. The sender is no longer included in the key
2977 when use_sender is false.
2978
297926. Added "control = submission" modifier to ACLs.
2980
298127. Added the ${base62d: operator to decode base 62 numbers.
2982
298328. dnsdb lookups can now access SRV records.
2984
298529. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2986 the configuration file.
2987
298830. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2989 (-v) mode. This makes the output for a verbose queue run more intelligible.
2990
299131. Added a use_postmaster feature to recipient callouts.
2992
299332. Added the $body_zerocount variable, containing the number of binary zero
2994 bytes in the message body.
2995
299633. The time of last modification of the "new" subdirectory is now used as the
2997 "mailbox time last read" when there is a quota error for a maildir
2998 delivery.
2999
300034. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3001
300235. Added +ignore_unknown as a special item in host lists.
3003
300436. Code for decoding IPv6 addresses in host lists is now included, even if
3005 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3006 address was recognized as an IP address, but was then not correctly decoded
3007 into binary, causing unexpected and incorrect effects when compared with
3008 another IP address.
3009
3010
3011Exim version 4.34
3012-----------------
3013
3014 1. Very minor rewording of debugging text in manualroute to say "list of
3015 hosts" instead of "hostlist".
3016
3017 2. If verify=header_syntax was set, and a header line with an unqualified
3018 address (no domain) and a large number of spaces between the end of the
3019 name and the colon was received, the reception process suffered a buffer
3020 overflow, and (when I tested it) crashed. This was caused by some obsolete
3021 code that should have been removed. The fix is to remove it!
3022
3023 3. When running in the test harness, delay a bit after writing a bounce
3024 message to get a bit more predictability in the log output.
3025
3026 4. Added a call to search_tidyup() just before forking a reception process. In
3027 theory, someone could use a lookup in the expansion of smtp_accept_max_
3028 per_host which, without the tidyup, could leave open a database connection.
3029
3030 5. Added the variables $recipient_data and $sender_data which get set from a
3031 lookup success in an ACL "recipients" or "senders" condition, or a router
3032 "senders" option, similar to $domain_data and $local_part_data.
3033
3034 6. Moved the writing of debug_print from before to after the "senders" test
3035 for routers.
3036
3037 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3038 problems for message scanning, either using a data ACL, or using
3039 local_scan() because the Received: header was not generated till after they
3040 were called (in order to set the time as the time of reception completion).
3041 I have revised the way this works. The header is now generated after the
3042 body is received, but before the ACL or local_scan() are called. After they
3043 are run, the timestamp in the header is updated.
3044
3045
3046Exim version 4.33
3047-----------------
3048
3049 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3050 before starting a queue runner without re-exec. This happened only when
3051 deliver_drop_privilege was set or when the Exim user was set to root. The
3052 effect of the bug was that timeouts during subsequent deliveries caused
3053 crashes instead of being properly handled. The handler is now left at its
3054 default (and expected) setting.
3055
3056 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3057 message, again when deliver_drop_privilege is set or Exim is run as root.
3058 The bug described in (1) was not present in this case, but the tidying up
3059 of the other signals was missing. I have made the two cases consistent.
3060
3061 3. The ignore_target_hosts setting on a manualroute router was being ignored
3062 for hosts that were looked up using the /MX notation.
3063
3064 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3065 in domain lists.
3066
3067 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3068 operated on the sender address. After changing the $sender_address to <>
3069 for the sender address verify, Exim was re-instated it as the original
3070 (before rewriting) address, but remembering that it had rewritten it, so it
3071 wasn't rewriting it again. This bug also had the effect of breaking the
3072 sender address verification caching when the sender address was rewritten.
3073
3074 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3075 This has been changed so that if the ip literal address matches
3076 ignore_target_hosts, the router declines.
3077
3078 7. Added expansion conditions match_domain, match_address, and match_local_
3079 part (NOT match_host).
3080
3081 8. The placeholder for the Received: header didn't have a length field set.
3082
3083 9. Added code to Exim itself and to exim_lock to test for a specific race
3084 condition that could lead to file corruption when using MBX delivery. The
3085 issue is with the lockfile that is created in /tmp. If this file is removed
3086 after a process has opened it but before that process has acquired a lock,
3087 there is the potential for a second process to recreate the file and also
3088 acquire a lock. This could lead to two Exim processes writing to the file
3089 at the same time. The added code performs the same test as UW imapd; it
3090 checks after acquiring the lock that its file descriptor still refers to
3091 the same named file.
3092
309310. The buffer for building added header lines was of fixed size, 8192 bytes.
3094 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3095 when Exim is built.
3096
309711. Added the smtp_active_hostname option. If used, this will typically be made
3098 to depend on the incoming interface address. Because $interface_address is
3099 not set up until the daemon has forked a reception process, error responses
3100 that can happen earlier (such as "too many connections") no longer contain
3101 a host name.
3102
310312. If an expansion in a condition on a "warn" statement fails because a lookup
3104 defers, the "warn" statement is abandoned, and the next ACL statement is
3105 processed. Previously this caused the whole ACL to be aborted.
3106
310713. Added the iplsearch lookup type.
3108
310914. Added ident_timeout as a log selector.
3110
311115. Added tls_certificate_verified as a log selector.
3112
311316. Added a global option tls_require_ciphers (compare the smtp transport
3114 option of the same name). This controls incoming TLS connections.
3115
311617. I finally figured out how to make tls_require_ciphers do a similar thing
3117 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3118 before starting the TLS session.
3119
312018. Tabs are now shown as \t in -bP output.
3121
312219. If the log selector return_path_on_delivery was set, Exim crashed when
3123 bouncing a message because it had too many Received: header lines.
3124
312520. If two routers both had headers_remove settings, and the first one included
3126 a superfluous trailing colon, the final name in the first list and the
3127 first name in the second list were incorrectly joined into one item (with a
3128 colon in the middle).
3129
3130
3131Exim version 4.32
3132-----------------
3133
3134 1. Added -C and -D options to the exinext utility, mainly to make it easier
3135 to include in the automated testing, but these could be helpful when
3136 multiple configurations are in use.
3137
3138 2. The exinext utility was not formatting the output nicely when there was
3139 an alternate port involved in the retry record key, nor when there was a
3140 message id as well (for retries that were specific to a specific message
3141 and a specific host). It was also confused by IPv6 addresses, because of
3142 the additional colons they contain. I have fixed the IPv4 problem, and
3143 patched it up to do a reasonable job for IPv6.
3144
3145 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3146 delivery, the log line now contains "pipelined" if PIPELINING was used.
3147
3148 4. An SMTP transport process used to panic and die if the bind() call to set
3149 an explicit outgoing interface failed. This has been changed; it is now
3150 treated in the same way as a connect() failure.
3151
3152 5. A reference to $sender_host_name in the part of a conditional expansion
3153 that was being skipped was still causing a DNS lookup. This no longer
3154 occurs.
3155
3156 6. The def: expansion condition was not recognizing references to header lines
3157 that used bh_ and bheader_.
3158
3159 7. Added the _cache feature to named lists.
3160
3161 8. The code for checking quota_filecount in the appendfile transport was
3162 allowing one more file than it should have been.
3163
3164 9. For compatibility with Sendmail, the command line option
3165
3166 -prval:sval
3167
3168 is equivalent to
3169
3170 -oMr rval -oMs sval
3171
3172 and sets the incoming protocol and host name (for trusted callers). The
3173 host name and its colon can be omitted when only the protocol is to be set.
3174 Note the Exim already has two private options, -pd and -ps, that refer to
3175 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3176 "s", but I don't think that's a major issue.
3177
317810. A number of refactoring changes to the code, none of which should affect
3179 Exim's behaviour:
3180
3181 (a) The number of logging options was getting close to filling up the
3182 32-bit word that was used as a bit map. I have split them into two classes:
3183 those that are passed in the argument to log_write(), and those that are
3184 only ever tested independently outside of that function. These are now in
3185 separate 32-bit words, so there is plenty of room for expansion again.
3186 There is no change in the user interface or the logging behaviour.
3187
3188 (b) When building, for example, log lines, the code previously used a
3189 macro that called string_cat() twice, in order to add two strings. This is
3190 not really sufficiently general. Furthermore, there was one instance where
3191 it was actually wrong because one of the argument was used twice, and in
3192 one call a function was used. (As it happened, calling the function twice
3193 did not affect the overall behaviour.) The macro has been replaced by a
3194 function that can join an arbitrary number of extra strings onto a growing
3195 string.
3196
3197 (c) The code for expansion conditions now uses a table and a binary chop
3198 instead of a serial search (which was left over from when there were very
3199 few conditions). Also, it now recognizes conditions like "pam" even when
3200 the relevant support is not compiled in: a suitably worded error message is
3201 given if an attempt is made to use such a condition.
3202
320311. Added ${time_interval:xxxxx}.
3204
320512. A bug was causing one of the ddress fields not to be passed back correctly
3206 from remote delivery subprocesses. The field in question was not being
3207 subsequently used, so this caused to problems in practice.
3208
320913. Added new log selectors queue_time and deliver_time.
3210
321114. Might have fixed a bug in maildirsizefile handling that threw up
3212 "unexpected character" debug warnings, and recalculated the data
3213 unnecessarily. In any case, I expanded the warning message to give more
3214 information.
3215
321615. Added the message "Restricted characters in address" to the statements in
3217 the default ACL that block characters like @ and % in local parts.
3218
321916. Change 71 for release 4.31 proved to be much less benign that I imagined.
3220 Three changes have been made:
3221
3222 (a) There was a serious bug; a negative response to MAIL caused the whole
3223 recipient domain to be cached as invalid, thereby blocking all messages
3224 to all local parts at the same domain, from all senders. This bug has
3225 been fixed. The domain is no longer cached after a negative response to
3226 MAIL if the sender used is not empty.
3227
3228 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3229 been restored.
3230
3231 (c) A new callout option, "use_sender" has been added for people who want
3232 the modified behaviour.
3233
3234
3235Exim version 4.31
3236-----------------
3237
3238 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3239 Larry Rosenman.
3240
3241 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3242 indeed breaks things for older releases.
3243
3244 3. Added additional logging to the case where there is a problem reading data
3245 from a filter that is running in a subprocess using a pipe, in order to
3246 try to track down a specific problem.
3247
3248 4. Testing facility fudge: when running in the test harness and attempting
3249 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3250 getting "No route to host". Convert this to a timeout.
3251
3252 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3253 warning.
3254
3255 6. Some OS don't have socklen_t but use size_t instead. This affects the
3256 fifth argument of getsockopt() amongst other things. This is now
3257 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3258 can be set for individual OS. I have set it for SunOS5, OSF1, and
3259 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3260 some earlier ones do not.
3261
3262 7. Change 4.30/15 was not doing the test caselessly.
3263
3264 8. The standard form for an IPv6 address literal was being rejected by address
3265 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3266 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3267 this, as well as the form without the "IPv6" on the front (but only when
3268 address literals are enabled, of course).
3269
3270 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3271
327210. Exim crashed if a message with an empty sender address specified by -f
3273 encountered a router with an errors_to setting. This could be provoked only
3274 by a command such as
3275
3276 exim -f "" ...
3277
3278 where an empty string was supplied; "<>" did not hit this bug.
3279
328011. Installed PCRE release 4.5.
3281
328212. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3283 remained set. It is now erased.
3284
328513. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3286 times from message ids (which are base 36 rather than the normal 62).
3287
328814. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3289 were being counted as actual protocol errors, and logged if the log
3290 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3291 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3292 and DATA following a set of rejected RCPTs do not count as protocol errors.
3293 In other words, Exim assumes they were pipelined, though this may not
3294 actually be the case. Of course, in all cases the client gets an
3295 appropriate error code.
3296
329715. If a lookup fails in an ACL condition, a message about the failure may
3298 be available; it is used if testing the ACL cannot continue, because most
3299 such messages specify what the cause of the deferral is. However, some
3300 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3301 that caused an old message to be retained and used if a later statement
3302 caused a defer, replacing the real cause of the deferral.
3303
330416. If an IP address had so many PTR records that the DNS lookup buffer
3305 was not large enough to hold them, Exim could crash while trying to process
3306 the truncated data. It now detects and logs this case.
3307
330817. Further to 4.21/58, another change has been made: if (and only if) the
3309 first line of a message (the first header line) ends with CRLF, a bare LF
3310 in a subsequent header line has a space inserted after it, so as not to
3311 terminate the header.
3312
331318. Refactoring: tidied an ugly bit of code in appendfile that copied data
3314 unnecessarily, used atoi() instead of strtol(), and didn't check the
3315 termination when getting file sizes from file names by regex.
3316
331719. Completely re-implemented the support for maildirsize files, in the light
3318 of a number of problems with the previous contributed implementation
3319 (4.30/29). In particular:
3320
3321 . If the quota is zero, the maildirsize file is maintained, but no quota is
3322 imposed.
3323
3324 . If the maildir directory does not exist, it is created before any attempt
3325 to write a maildirsize file.
3326
3327 . The quota value in the file is just a cache; if the quota is changed in
3328 the transport, the new value overrides.
3329
3330 . A regular expression is available for excluding directories from the
3331 count.
3332
333320. The autoreply transport checks the characters in options that define the
3334 message's headers; it allows continued headers, but it was checking with
3335 isspace() after an embedded newline instead of explicitly looking for a
3336 space or a tab.
3337
333821. If all the "regular" hosts to which an address was routed had passed their
3339 expiry times, and had not reached their retry times, the address was
3340 bounced, even if fallback hosts were defined. Now Exim should go on to try
3341 the fallback hosts.
3342
334322. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3344 equivalent code in the SMTP transport. Some hosts send humungous responses
3345 to HELO/EHLO, more than 1024 it seems.
3346
334723. Refactoring: code in filter.c used (void *) for "any old type" but this
3348 gives compiler warnings in some environments. I've now done it "properly",
3349 using a union.
3350
335124. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3352 (because of problems with the built-in one) was declared to return uschar *
3353 instead of char *, causing compiler failure.
3354
335525. Fixed a file descriptor leak when processing alias/forward files.
3356
335726. Fixed a minor format string issue in dbfn.c.
3358
335927. Typo in exim.c: ("dmbnz" for "dbmnz").
3360
336128. If a filter file refered to $h_xxx or $message_headers, and the headers
3362 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3363 become corrupted.
3364
336529. When a sender address is verified, it is cached, to save repeating the test
3366 when there is more than one recipient in a message. However, when the
3367 verification involves a callout, it is possible for different callout
3368 options to be set for different recipients. It is too complicated to keep
3369 track of this in the cache, so now Exim always runs a verification when a
3370 callout is required, relying on the callout cache for the optimization.
3371 The overhead is duplication of the address routing, but this should not be
3372 too great.
3373
337430. Fixed a bug in callout caching. If a RCPT command caused the sender address
3375 to be verified with callout=postmaster, and the main callout worked but the
3376 postmaster check failed, the verification correctly failed. However, if a
3377 subsequent RCPT command asked for sender verification *without* the
3378 postmaster check, incorrect caching caused this verification also to fail,
3379 incorrectly.
3380
338131. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3382 it was not caching the DNS options (qualify_single, search_parents) that
3383 were used when the lookup failed. A subsequent lookup with different
3384 options therefore always gave the same answer, though there were cases
3385 where it should not have. (Example: a "domains = !$mx_any" option on a
3386 dnslookup router: the "domains" option is always processed without any
3387 widening, but the router might have qualify_single set.) Now Exim uses the
3388 cached value only when the same options are set.
3389
339032. Added John Jetmore's "exipick" utility to the distribution.
3391
339233. GnuTLS: When an attempt to start a TLS session fails for any reason other
3393 than a timeout (e.g. a certificate is required, and is not provided), an
3394 Exim server now closes the connection immediately. Previously it waited for
3395 the client to close - but if the client is SSL, it seems that they each
3396 wait for each other, leading to a delay before one of them times out.
3397
339834: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3399 maintained 0.8.x compatibility because I don't think many are using it, and
3400 it is clearly obsolete.
3401
340235. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3403 transport.
3404
340536. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3406 client certificate was expired. A simple patch fixes this, though I don't
3407 understand the full logic of why the verify callback is called multiple
3408 times.
3409
341037. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3411 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3412 which causes problems with some clients (such as the Certicom SSL Plus
3413 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3414 disables the coutermeasure allowing Eudora to connect."
3415
341638. Exim was not checking that a write() to a log file succeeded. This could
3417 lead to Bad Things if a log got too big, in particular if it hit a file
3418 size limit. Exim now panics and dies if it cannot write to a log file, just
3419 as it does if it cannot open a log file.
3420
342139. Modified OS/Makefile-Linux so that it now contains
3422
3423 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3424
3425 The two -D definitions ensure that Exim is compiled with large file
3426 support, which makes it possible to handle log files that are bigger than
3427 2^31.
3428
342940. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3430 instance) a domain was checked against a named list that involved a lookup,
3431 causing $domain_data to be set, then another domain was checked against the
3432 same list, then the first domain was re-checked, the value of $domain_data
3433 after the final check could be wrong. In particular, if the second check
3434 failed, it could be set empty. This bug probably also applied to
3435 $localpart_data.
3436
343741. The strip_trailing_dot option was not being applied to the address given
3438 with the -f command-line option.
3439
344042. The code for reading a message's header from the spool was incrementing
3441 $received_count, but never initializing it. This meant that the value was
3442 incorrect (doubled) while delivering a message in the same process in which
3443 it was received. In the most common configuration of Exim, this never
3444 happens - a fresh exec is done - but it can happen when
3445 deliver_drop_privilege is set.
3446
344743. When Exim logs an SMTP synchronization error - client data sent too soon -
3448 it now includes up to 150 characters of the unexpected data in the log
3449 line.
3450
345144. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3452 and building data strings. The size of both of these buffers was 10 000
3453 bytes - far larger than anybody would *ever* want, thought I. Needless to
3454 say, somebody hit the limit. I have increased the maximum line length to
3455 20 000 and the maximum data length of concatenated lines to 100 000. I have
3456 also fixed two bugs, because there was no checking on these buffers. Tsk,
3457 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3458 buffer is too small.
3459
346045. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3461 lsearch lookups. Now it does.
3462
346346. When parsing a route_list item in a manualroute router, a fixed-length
3464 buffer was used for the list of hosts. I made this 1024 bytes long,
3465 thinking that nobody would ever have a list of hosts that long. Wrong.
3466 Somebody had a whole pile of complicated expansion conditions, and the
3467 string was silently truncated, leading to an expansion error. It turns out
3468 that it is easier to change to an unlimited length (owing to other changes
3469 that have happened since this code was originally written) than to build
3470 structure for giving a limitation error. The length of the item that
3471 expands into the list of hosts is now unlimited.
3472
347347. The lsearch lookup could not handle data where the length of text line was
3474 more than 4095 characters. Such lines were truncated, leading to shortened
3475 data being returned. It should now handle lines of any length.
3476
347748. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3478 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3479 ACL").
3480
348149. Cosmetic tidy to scripts like exicyclog that are generated by globally
3482 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3483 no longer happens in comment lines. A list of replacements is now placed
3484 at the head of all of the source files, except those whose only change is
3485 to replace PERL_COMMAND in the very first #! line.
3486
348750. Replaced the slow insertion sort in queue.c, for sorting the list of
3488 messages on the queue, with a bottom-up merge sort, using code contributed
3489 by Michael Haardt. This should make operations like -bp somewhat faster on
3490 large queues. It won't affect queue runners, except when queue_run_in_order
3491 is set.
3492
349351. Installed eximstats 1.31 in the distribution.
3494
349552. Added support for SRV lookups to the dnslookup router.
3496
349753. If an ACL referred to $message_body or $message_body_end, the value was not
3498 reset for any messages that followed in the same SMTP session.
3499
350054. The store-handling optimization for building very long strings was not
3501 differentiating between the different store pools. I don't think this
3502 actually made any difference in practice, but I've tidied it.
3503
350455. While running the routers to verify a sender address, $sender_address
3505 was still set to the sender address. This is wrong, because when routing to
3506 send a bounce to the sender, it would be empty. Therefore, I have changed
3507 it so that, while verifying a sender address, $sender_address is set to <>.
3508 (There is no change to what happens when verifying a recipient address.)
3509
351056. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3511 target A or AAAA records (if not already returned) without resetting the
3512 qualify_single or search_parents options of the DNS resolver. These are
3513 inappropriate in this case because the targets of MX and SRV records must
3514 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3515 target that, when qualified, matched something in the local domain. These
3516 two options are now turned off when doing these lookups.
3517
351857. It seems that at least some releases of Reiserfs (which does not have the
3519 concept of a fixed number of inodes) returns zero and not -1 for the
3520 number of available inodes. This interacted badly with check_spool_inodes,
3521 which assumed that -1 was the "no such thing" setting. What I have done is
3522 to check that the total number of inodes is greater than zero before doing
3523 the test of how many are available.
3524
352558. When a "warn" ACL statement has a log_message modifier, the message is
3526 remembered, and not repeated. This is to avoid a lot of repetition when a
3527 message has many recipients that cause the same warning to be written.
3528 Howewer, Exim was preserving the list of already written lines for an
3529 entire SMTP session, which doesn't seem right. The memory is now reset if a
3530 new message is started.
3531
353259. The "rewrite" debugging flag was not showing the result of rewriting in the
3533 debugging output unless log_rewrite was also set.
3534
353560. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3536 of (int)(handle) when we know that handle contains (void *)(-1).
3537
353861. The Exim daemon panic-logs an error return when it closes the incoming
3539 connection. However "connection reset by peer" seems to be common, and
3540 isn't really an error worthy of noting specially, so that particular error
3541 is no long logged.
3542
354362. When Exim is trying to find all the local interfaces, it used to panic and
3544 die if the ioctl to get the interface flags failed. However, it seems that
3545 on at least one OS (Solaris 9) it is possible to have an interface that is
3546 included in the list of interfaces, but for which you get a failure error
3547 for this call. This happens when the interface is not "plumbed" into a
3548 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3549 failure of the "get flags" call assumes that the interface is down.
3550
355163. Added a ${eval10: operator, which assumes all numbers are decimal. This
3552 makes life easier for people who are doing arithmetic on fields extracted
3553 from dates, where you often get leading zeros that should not be
3554 interpreted as octal.
3555
355664. Added qualify_domain to the redirect router, to override the global
3557 setting.
3558
355965. If a pathologically long header line contained very many addresses (the
3560 report of this problem mentioned 10 000) and each of them was rewritten,
3561 Exim could use up a very large amount of memory. (It kept on making new
3562 copies of the header line as it rewrote, and never released the old ones.)
3563 At the expense of a bit more processing, the header rewriting function has
3564 been changed so that it no longer eats memory in this way.
3565
356666. The generation of the Received: header has been moved from the time that a
3567 message starts to be received, to the time that it finishes. The timestamp
3568 in the Received: header should now be very close to that of the <= log
3569 line. There are two side-effects of this change:
3570
3571 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3572 logged header lines no longer include the local Received: line, because
3573 it has not yet been created. The same applies to a copy of the message
3574 that is returned to a non-SMTP sender when a message is rejected.
3575
3576 (b) When a filter file is tested using -bf, no additional Received: header
3577 is added to the test message. After some thought, I decided that this
3578 is a bug fix.
3579
3580 This change does not affect the value of $received_for. It is still set
3581 after address rewriting, but before local_scan() is called.
3582
358367. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3584
358568. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3586 gave an unhelpful panic error message, and a defer error. I have managed to
3587