Updated for eximstats 1.52
[exim.git] / doc / doc-txt / ChangeLog
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34c5e8dd 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.456 2007/01/22 15:56:47 steve 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
34c5e8dd
SC
32SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
33
b4ed4da0 34
5dd1517f
PH
35Exim version 4.66
36-----------------
37
38PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
39 fixed by 4.65/MH/01 (is this a record?) are fixed:
40
41 (i) An empty string was always treated as zero by the numeric comparison
42 operators. This behaviour has been restored.
43
44 (ii) It is documented that the numeric comparison operators always treat
45 their arguments as decimal numbers. This was broken in that numbers
46 starting with 0 were being interpreted as octal.
47
48 While fixing these problems I realized that there was another issue that
49 hadn't been noticed. Values of message_size_limit (both the global option
50 and the transport option) were treated as octal if they started with 0.
51 The documentation was vague. These values are now always treated as
52 decimal, and I will make that clear in the documentation.
53
54
93cfa765
TK
55Exim version 4.65
56-----------------
57
58TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
59 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
60 versions. (#438)
61
d6066548
MH
62MH/01 Don't check that the operands of numeric comparison operators are
63 integers when their expansion is in "skipping" mode (fixes bug
64 introduced by 4.64-PH/07).
65
4362ff0d
PH
66PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
67 child addresses, Exim now panics and dies. Previously, because the count
68 is held in a short int, deliveries were likely to be lost. As such a
69 large number of recipients for a single message is ridiculous
70 (performance will be very, very poor), I have chosen to impose a limit
71 rather than extend the field.
72
93cfa765 73
944e9e9c
TF
74Exim version 4.64
75-----------------
aa41d2de 76
21d74bd9
TK
77TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
78 leftover -K file (the existence of which was triggered by #402).
79 While we were at it, introduced process PID as part of the -K
80 filename. This should rule out race conditions when creating
81 these files.
82
83TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
84 processing considerably. Previous code took too long for large mails,
85 triggering a timeout which in turn triggers #401.
86
87TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
88 in the DK code in transports.c. sendfile() is not really portable,
89 hence the _LINUX specificness.
944e9e9c
TF
90
91TF/01 In the add_headers option to the mail command in an Exim filter,
92 there was a bug that Exim would claim a syntax error in any
93 header after the first one which had an odd number of characters
94 in the field name.
95
2b1c6e3a
PH
96PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
97 callout verification, Exim cached a "reject" for the entire domain. This
98 is correct for most verifications, but it is not correct for a recipient
99 verification with use_sender or use_postmaster set, because in that case
100 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
101 case of MAIL FROM:<> rejection from other early rejections (e.g.
102 rejection of HELO). When verifying a recipient using a non-null MAIL
103 address, the cache is ignored if it shows MAIL FROM:<> rejection.
104 Whatever the result of the callout, the value of the domain cache is
105 left unchanged (for any other kind of callout, getting as far as trying
106 RCPT means that the domain itself is ok).
107
1f872c80
PH
108PH/02 Tidied a number of unused variable and signed/unsigned warnings that
109 gcc 4.1.1 threw up.
110
111PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
112 manifest itself as EPIPE rather than ECONNECT. When tidying away a
113 session, the daemon ignores ECONNECT errors and logs others; it now
114 ignores EPIPE as well.
115
d203e649
PH
116PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
117 (quoted-printable decoding).
118
cc2ed8f7 119PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 120 later the small subsequent patch to fix an introduced bug.
f951fd57 121
ddfcd446
PH
122PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
123
d45b1de8
PH
124PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
125
126PH/08 An error is now given if message_size_limit is specified negative.
127
38a0a95f 128PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 129 to be given (somewhat) arbitrary names.
38a0a95f 130
a2405d83
JJ
131JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
132 in 4.64-PH/09.
133
134JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
135 miscellaneous code fixes
136
6ea85e9a
PH
137PH/10 Added the log_reject_target ACL modifier to specify where to log
138 rejections.
139
26da7e20
PH
140PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
141 hostname. This is wrong, because it relates to the incoming message (and
142 probably the interface on which it is arriving) and not to the outgoing
143 callout (which could be using a different interface). This has been
144 changed to use the value of the helo_data option from the smtp transport
145 instead - this is what is used when a message is actually being sent. If
146 there is no remote transport (possible with a router that sets up host
147 addresses), $smtp_active_hostname is used.
6ea85e9a 148
14aa5a05 149PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 150 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
151 (a) The code assumed that strncpy() returns a negative number on buffer
152 overflow, which isn't the case. Replaced with Exim's string_format()
153 function.
154 (b) There were several signed/unsigned issues. I just did the minimum
155 hacking in of casts. There is scope for a larger refactoring.
156 (c) The code used strcasecmp() which is not a standard C function.
157 Replaced with Exim's strcmpic() function.
158 (d) The code set only $1; it now sets $auth1 as well.
159 (e) A simple test gave the error "authentication client didn't specify
160 service in request". It would seem that Dovecot has changed its
161 interface. Fortunately there's a specification; I followed it and
162 changed what the client sends and it appears to be working now.
163
ff75a1f7
PH
164PH/13 Added $message_headers_raw to provide the headers without RFC 2047
165 decoding.
166
e6f6568e
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167PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
168 address A is aliased to B and C, where B exists and C does not. Without
169 -v the output is "A verified" because verification stops after a
170 successful redirection if more than one address is generated. However,
171 with -v the child addresses are also verified. Exim was outputting "A
172 failed to verify" and then showing the successful verification for C,
173 with its parentage. It now outputs "B failed to verify", showing B's
174 parentage before showing the successful verification of C.
175
d6f6e0dc
PH
176PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
177 look up a TXT record in a specific list after matching in a combined
178 list.
179
322050c2
PH
180PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
181 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
182 they consult the DNS. I had assumed they would set it the way they
183 wanted; and indeed my experiments on Linux seem to show that in some
184 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
185 To be on the safe side, however, I have now made the interface to
186 host_find_byname() similar to host_find_bydns(), with an argument
187 containing the DNS resolver options. The host_find_byname() function now
188 sets these options at its start, just as host_find_bydns() does. The smtp
189 transport options dns_qualify_single and dns_search_parents are passed to
190 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
191 of host_find_byname() use the default settings of RES_DEFNAMES
192 (qualify_single) but not RES_DNSRCH (search_parents).
193
08955dd3
PH
194PH/17 Applied (a modified version of) Nico Erfurth's patch to make
195 spool_read_header() do less string testing, by means of a preliminary
196 switch on the second character of optional "-foo" lines. (This is
197 overdue, caused by the large number of possibilities that now exist.
198 Originally there were few.) While I was there, I also converted the
199 str(n)cmp tests so they don't re-test the leading "-" and the first
200 character, in the hope this might squeeze out yet more improvement.
201
1eccaa59
PH
202PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
203 flag allowing group syntax was set by the header_syntax check but not
204 turned off, possible causing trouble later; (2) The flag was not being
205 set at all for the header_verify test, causing "group"-style headers to
206 be rejected. I have now set it in this case, and also caused header_
207 verify to ignore an empty address taken from a group. While doing this, I
208 came across some other cases where the code for allowing group syntax
209 while scanning a header line wasn't quite right (mostly, not resetting
210 the flag correctly in the right place). These bugs could have caused
211 trouble for malformed header lines. I hope it is now all correct.
212
602e59e5
PH
213PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
214 with the "reply" argument non-NULL. The code, however (which originally
215 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
216 but it didn't always do it. This confused somebody who was copying the
217 code for some other use. I have removed all the tests.
218
411ef850
PH
219PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
220 feature that was used to support insecure browsers during the U.S. crypto
221 embargo. It requires special client support, and Exim is probably the
222 only MTA that supported it -- and would never use it because real RSA is
223 always available. This code has been removed, because it had the bad
224 effect of slowing Exim down by computing (never used) parameters for the
225 RSA_EXPORT functionality.
226
7befa435
PH
227PH/21 On the advice of Timo Sirainen, added a check to the dovecot
228 authenticator to fail if there's a tab character in the incoming data
229 (there should never be unless someone is messing about, as it's supposed
230 to be base64-encoded). Also added, on Timo's advice, the "secured" option
231 if the connection is using TLS or if the remote IP is the same as the
232 local IP, and the "valid-client-cert option" if a client certificate has
233 been verified.
234
48da4259 235PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
236 authenticators. This can be used for authorization after authentication
237 succeeds. (In the case of plaintext, it servers for both authentication
238 and authorization.)
239
48da4259
PH
240PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
241 if any retry times were supplied.
242
d1d5595c
PH
243PH/24 Exim crashed if verify=helo was activated during an incoming -bs
244 connection, where there is no client IP address to check. In this
245 situation, the verify now always succeeds.
246
0ef732d9
PH
247PH/25 Applied John Jetmore's -Mset patch.
248
328895cc
PH
249PH/26 Added -bem to be like -Mset, but loading a message from a file.
250
fd700877
PH
251PH/27 In a string expansion for a processed (not raw) header when multiple
252 headers of the same name were present, leading whitespace was being
253 removed from all of them, but trailing whitespace was being removed only
254 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
255 before concatenation. Completely empty headers in a concatenation (as
256 before) are ignored.
fd700877 257
8dce1a6f
PH
258PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
259 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
260
17af4a17
PH
261PH/29 [Removed. This was a change that I later backed out, and forgot to
262 correct the ChangeLog entry (that I had efficiently created) before
263 committing the later change.]
f6c332bd
PH
264
265PH/30 Exim was sometimes attempting to deliver messages that had suffered
266 address errors (4xx response to RCPT) over the same connection as other
267 messages routed to the same hosts. Such deliveries are always "forced",
268 so retry times are not inspected. This resulted in far too many retries
269 for the affected addresses. The effect occurred only when there were more
270 hosts than the hosts_max_try setting in the smtp transport when it had
271 the 4xx errors. Those hosts that it had tried were not added to the list
272 of hosts for which the message was waiting, so if all were tried, there
273 was no problem. Two fixes have been applied:
274
275 (i) If there are any address or message errors in an SMTP delivery, none
276 of the hosts (tried or untried) are now added to the list of hosts
277 for which the message is waiting, so the message should not be a
278 candidate for sending over the same connection that was used for a
279 successful delivery of some other message. This seems entirely
280 reasonable: after all the message is NOT "waiting for some host".
281 This is so "obvious" that I'm not sure why it wasn't done
282 previously. Hope I haven't missed anything, but it can't do any
283 harm, as the worst effect is to miss an optimization.
284
285 (ii) If, despite (i), such a delivery is accidentally attempted, the
286 routing retry time is respected, so at least it doesn't keep
287 hammering the server.
288
c1114884
PH
289PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
290 in ${readsocket because some servers need this prod.
291
7a0743eb
PH
292PH/32 Added some extra debug output when updating a wait-xxx database.
293
0d85fa3f
PH
294PH/33 The hint "could be header name not terminated by colon", which has been
295 given for certain expansion errors for a long time, was not being given
296 for the ${if def:h_colon_omitted{... case.
297
1bf43b78
PH
298PH/34 The spec says: "With one important exception, whenever a domain list is
299 being scanned, $domain contains the subject domain." There was at least
300 one case where this was not true.
301
520de300
PH
302PH/35 The error "getsockname() failed: connection reset by peer" was being
303 written to the panic log as well as the main log, but it isn't really
304 panic-worthy as it just means the connection died rather early on. I have
305 removed the panic log writing for the ECONNRESET error when getsockname()
306 fails.
307
48c7f9e2
PH
308PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
309 runs only) independently of the message's sender address. This meant
310 that, if the 4xx error was in fact related to the sender, a different
311 message to the same recipient with a different sender could confuse
312 things. In particualar, this can happen when sending to a greylisting
313 server, but other circumstances could also provoke similar problems.
314 I have changed the default so that the retry time for these errors is now
315 based a combination of the sender and recipient addresses. This change
316 can be overridden by setting address_retry_include_sender=false in the
317 smtp transport.
318
99ea1c86
PH
319PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
320 remote server are returned as part of bounce messages. This was not
321 happening for LMTP over a pipe (the lmtp transport), but now it is the
322 same for both kinds of LMTP.
323
a2042e78
PH
324PH/38 Despite being documented as not happening, Exim was rewriting addresses
325 in header lines that were in fact CNAMEs. This is no longer the case.
326
4fbcfc2e
PH
327PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
328 and queue runs started by the daemon processed all messages. This has
329 been fixed so that -R and -S can now usefully be given with -q<time>.
330
aa41d2de
PH
331PH/40 Import PCRE release 6.7 (fixes some bugs).
332
af561417
PH
333PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
334
3cc66b45
PH
335PH/42 Give an error if -q is specified more than once.
336
194cc0e4
PH
337PH/43 Renamed the variables $interface_address and $interface_port as
338 $received_ip_address and $received_port, to make it clear that these
339 values apply to message reception, and not to the outgoing interface when
340 a message is delivered. (The old names remain recognized, of course.)
341
a401ddaa
PH
342PH/44 There was no timeout on the connect() call when using a Unix domain
343 socket in the ${readsocket expansion. There now is.
344
4e88a19f
PH
345PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
346 be meaningful with "accept".
347
d7d7b289
SC
348SC/01 Eximstats V1.43
349 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
350
351SC/02 Eximstats V1.44
352 Use a glob alias rather than an array ref in the generated
353 parser. This improves both readability and performance.
354
355SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
356 Collect SpamAssassin and rejection statistics.
357 Don't display local sender or destination tables unless
358 there is data to show.
359 Added average volumes into the top table text output.
360
361SC/04 Eximstats V1.46
362 Collect data on the number of addresses (recipients)
363 as well as the number of messages.
364
365SC/05 Eximstats V1.47
366 Added 'Message too big' to the list of mail rejection
367 reasons (thanks to Marco Gaiarin).
368
369SC/06 Eximstats V1.48
370 Mainlog lines which have GMT offsets and are too short to
371 have a flag are now skipped.
372
373SC/07 Eximstats V1.49 (Alain Williams)
374 Added the -emptyok flag.
375
376SC/08 Eximstats V1.50
377 Fixes for obtaining the IP address from reject messages.
378
0ea2a468
JJ
379JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
380 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
381 whitesspace changes from 4.64-PH/27
382
383JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
384 match 4.64-PH/13
385
386JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
387 are found, allow negative numbers in numeric criteria)
388
389JJ/06 exipick.20061117.2, added new $message_body_missing variable
390
391JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
392 to match changes made in 4.64-PH/43
393
8a10f5a4
PH
394PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
395
30e18802
PH
396PH/47 Put in an explicit test for a DNS lookup of an address record where the
397 "domain" is actually an IP address, and force a failure. This locks out
398 those revolvers/nameservers that support "A-for-A" lookups, in
399 contravention of the specifications.
400
55728a4f
PH
401PH/48 When a host name was looked up from an IP address, and the subsequent
402 forward lookup of the name timed out, the host name was left in
403 $sender_host_name, contrary to the specification.
d7d7b289 404
d7837193
PH
405PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
406 restricted to single-key lookups, Exim was not diagnosing an error if
407 * or *@ was used with a query-style lookup.
408
87054a31
PH
409PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
410
ea2c01d2
MH
411MH/01 local_scan ABI version incremented to 1.1. It should have been updated
412 long ago, but noone interested enough thought of it. Let's just say that
413 the "1.1" means that there are some new functions that weren't there at
414 some point in the past.
415
e4fa6968
PH
416PH/51 Error processing for expansion failure of helo_data from an smtp
417 transport during callout processing was broken.
418
56f5d9bd
PH
419PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
420 tested/used via the -bh/-bhc/-bs options.
421
922e1c28
PH
422PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
423 bug, fixed in subsequent PCRE releases).
424
21eb6e72
PH
425PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
426 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
427
a0540757
PH
428PH/55 Check for a ridiculously long file name in exim_dbmbuild.
429
944e9e9c 430
478be7b0
SC
431Exim version 4.63
432-----------------
433
434SC/01 Use a glob alias rather than an array ref in eximstats generated
435 parser. This improves both readability and performance.
436
437SC/02 Collect SpamAssassin and rejection statistics in eximstats.
438 Don't display local sender or destination tables in eximstats unless
439 there is data to show.
440 Added average volumes into the eximstats top table text output.
441
442SC/03 Collect data on the number of addresses (recipients) as well
443 as the number of messages in eximstats.
444
2b965a65
TF
445TF/01 Correct an error in the documentation for the redirect router. Exim
446 does (usually) call initgroups() when daemonizing.
478be7b0 447
45b91596
PH
448TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
449 with consistent privilege compared to when running as a daemon.
478be7b0 450
c59f5781
TF
451TF/03 Note in the spec that $authenticated_id is not set for local
452 submissions from trusted users.
453
90fc3069
TF
454TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
455 Thanks to Dean Brooks <dean@iglou.com> for the patch.
456
6083aca0
TF
457TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
458 by adding some example configuration directives to the default
459 configuration file. A little bit of work is required to uncomment the
460 directives and define how usernames and passwords are checked, but
461 there is now a framework to start from.
462
765b530f
PH
463PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
464 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
465 without this. I don't know how relevant this is to other LDAP libraries.
466
4e167a8c
PH
467PH/02 Add the verb name to the "unknown ACL verb" error.
468
4608d683
PH
469PH/03 Magnus Holmgren's patch for filter_prepend_home.
470
b8dc3e4a
PH
471PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
472
5418e93b
PH
473PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
474 directory not expanded when it should be if an expanded home directory
475 was set for the address (which is overridden by the transport).
476
b4a9bda2
PH
477PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
478 libradius.
479
45b91596
PH
480PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
481 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
482 because it is too late at that time, and has no effect.
483
5547e2c5
PH
484PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
485 security issue with \' (bugzilla #107). I could not use the
486 PQescapeStringConn() function, because it needs a PGconn value as one of
487 its arguments.
488
dbcef0ea
PH
489PH/08 When testing addresses using -bt, indicate those final addresses that
490 are duplicates that would not cause an additional delivery. At least one
491 person was confused, thinking that -bt output corresponded to deliveries.
492 (Suppressing duplicates isn't a good idea as you lose the information
493 about possibly different redirections that led to the duplicates.)
494
25257489
PH
495PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
496 systems where poll() doesn't work, in particular OS X.
497
c816d124
PH
498PH/10 Added more information to debugging output for retry time not reached.
499
a9ccd69a
PH
500PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
501 operations in malware.c.
502
75fa1910
PH
503PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
504 signatures.
505
a7d7aa58
PH
506PH/13 If write_rejectlog was set false when logging was sent to syslog with
507 syslog_duplication set false, log lines that would normally be written
508 both the the main log and to the reject log were not written to syslog at
509 all.
510
42119b09
PH
511PH/14 In the default configuration, change the use of "message" in ACL warn
512 statements to "add_header".
513
41609df5
PH
514PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
515 not followed by a command (e.g. "seen endif").
516
a5bd321b
PH
517PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
518 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
519 latter.
520
e85a7ad5 521PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
522 so that it is now:
523
e85a7ad5
PH
524 ${if or { \
525 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
526 { match{$h_precedence:}{(?i)bulk|list|junk} } \
527 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
528 }{no}{yes}}
529
e85a7ad5
PH
530 The Auto-Submitted: and various List- headers are standardised, whereas I
531 don't think Precedence: ever was.
5dff5817 532
d8fe1c03
PH
533PH/18 Refactored debugging code in route_finduser() to show more information,
534 in particular, the error code if getpwnam() issues one.
535
16282d2b
PH
536PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
537 This is apparently needed in addition to the PH/07 change above to avoid
538 any possible encoding problems.
539
35d40a98
PH
540PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
541 but not after initializing Perl.
542
034d99ab
PH
543PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
544 output them only if debugging. By default they are written stderr,
545 apparently, which is not desirable.
546
6ec97b1b
PH
547PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
548 queries.
549
e22ca4ac
JJ
550JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
551 --not options
552
553JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
554
33d73e3b
PH
555PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
556 authenticated or an ident call has been made. Suppress the default
557 values for $authenticated_id and $authenticated_sender (but permit -oMai
558 and -oMas) when testing with -bh.
559
9ecb03f3
PH
560PH/24 Re-jigged the order of the tests in the default configuration so that the
561 tests for valid domains and recipients precede the DNS black list and CSA
562 tests, on the grounds that those ones are more expensive.
563
084efe8d
PH
564PH/25 Exim was not testing for a space following SMTP commands such as EHLO
565 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
566 This bug exists in every version of Exim that I still have, right back to
567 0.12.
568
366fc9f0
PH
569PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
570 However, an attempt to turn on case-sensitivity in a regex key by
571 including (?-i) didn't work because the subject string was already
572 lowercased, and the effects were non-intuitive. It turns out that a
573 one-line patch can be used to allow (?-i) to work as expected.
574
c59f5781 575
c887c79e
TF
576Exim version 4.62
577-----------------
578
579TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
580 other effects) broke the use of negated acl sub-conditions.
581
1cce3af8
PH
582PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
583 patch).
584
afb3eaaf
PH
585PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
586 "Deny" causes Exim to reject the incoming connection with a 554 error.
587 Unfortunately, if there is a major crisis, such as a disk failure,
588 tcp-wrappers gives "deny", whereas what one would like would be some
589 kind of temporary error. A kludge has been added to help with this.
590 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
591 554 error is used if errno is still zero or contains ENOENT (which occurs
592 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
593 451 error is used.
594
e173618b
PH
595PH/03 Add -lutil to the default FreeBSD LIBS setting.
596
dd16e114
PH
597PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
598 errors. Otherwise a message that provokes a temporary error (when other
599 messages do not) can cause a whole host to time out.
600
f7fd3850
PH
601PH/05 Batch deliveries by appendfile and pipe transports did not work when the
602 addresses were routed directly to files or pipes from a redirect router.
603 File deliveries just didn't batch; pipe deliveries might have suffered
604 odd errors.
605
d87df92c
PH
606PH/06 A failure to get a lock for a hints database would erroneously always say
607 "Failed to get write lock", even when it was really a read lock.
608
7e9f683d
PH
609PH/07 The appendfile transport was creating MBX lock files with a fixed mode
610 of 0600. This has been changed to use the value of the lockfile_mode
611 option (which defaults to 0600).
612
bfad5236
PH
613PH/08 Applied small patch from the Sieve maintainer.
614
01c490df
PH
615PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
616 folder from quota calculations, a direct delivery into this folder messed
617 up the contents of the maildirsize file. This was because the regex was
618 used only to exclude .Trash (or whatever) when the size of the mailbox
619 was calculated. There was no check that a delivery was happening into an
620 excluded directory. This bug has been fixed by ignoring all quota
621 processing for deliveries into excluded directories.
622
d6629cdc
PH
623PH/10 Added the maildirfolder_create_regex option to appendfile.
624
1cce3af8 625
214e2000
PH
626Exim version 4.61
627-----------------
628
629PH/01 The code for finding all the local interface addresses on a FreeBSD
630 system running IPv6 was broken. This may well have applied to all BSD
631 systems, as well as to others that have similar system calls. The broken
632 code found IPv4 interfaces correctly, but gave incorrect values for the
633 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
634 that it would not match correctly against @[] and not recognize the IPv6
635 addresses as local.
636
f9daeae0
PH
637PH/02 The ipliteral router was not recognizing addresses of the form user@
638 [ipv6:....] because it didn't know about the "ipv6:" prefix.
639
7e66e54d
PH
640PH/03 Added disable_ipv6.
641
c8ea1597
PH
642PH/04 Changed $reply_address to use the raw form of the headers instead of the
643 decoded form, because it is most often used to construct To: headers
644 lines in autoreplies, and the decoded form may well be syntactically
645 invalid. However, $reply_address has leading white space removed, and all
646 newlines turned into spaces so that the autoreply transport does not
647 grumble.
648
911f6fde
PH
649PH/05 If group was specified without a user on a router, and no group or user
650 was specified on a transport, the group from the router was ignored.
651
47ca6d6c
PH
652PH/06 Increased the number of ACL variables to 20 of each type, and arranged
653 for visible compile-time settings that can be used to change these
654 numbers, for those that want even more. Backwards compatibility with old
655 spool files has been maintained. However, going back to a previous Exim
656 release will lost any variables that are in spool files.
657
ed0e9820
PH
658PH/07 Two small changes when running in the test harness: increase delay when
659 passing a TCP/IP connection to a new process, in case the original
660 process has to generate a bounce, and remove special handling of
661 127.0.0.2 (sic), which is no longer necessary.
662
eff37e47
PH
663PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
664 be the same on different OS.
665
1921d2ea
PH
666PH/09 Moved a debug statement in filter processing to avoid a race problem when
667 testing.
668
b3f69ca8
JJ
669JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
670 whether --show-vars was specified or not
671
672JJ/02 exipick: Added support for new ACL variable spool format introduced
673 in 4.61-PH/06
674
424a1c63
PH
675PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
676 syntactically invalid From: or Reply-to: line, and a filter used this to
677 generate an autoreply, and therefore failed to obtain an address for the
678 autoreply, Exim could try to deliver to a non-existent relative file
679 name, causing unrelated and misleading errors. What now happens is that
680 it logs this as a hard delivery error, but does not attempt to create a
681 bounce message.
682
7a100415
PH
683PH/11 The exinext utility has a -C option for testing purposes, but although
684 the given file was scanned by exinext itself; it wasn't being passed on
685 when Exim was called.
686
19b9dc85
PH
687PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
688 an end-of-file indication when reading a command response.
689
309bd837
PH
690PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
691 compiled. In many other places in Exim, IPv6 addresses are always
692 recognized, so I have changed this. It also means that IPv4 domain
693 literals of the form [IPV4:n.n.n.n] are now always recognized.
694
59e82a2a
PH
695PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
696 used if the router is not running as root, for example, when verifying at
697 ACL time, or when using -bh. The debugging output from this situation was
698 non-existent - all you got was a failure to exec. I have made two
699 changes:
700
701 (a) Failures to set uid/gid, the current directory, or a process leader
702 in a subprocess such as that created by queryprogram now generate
703 suitable debugging ouput when -d is set.
704
705 (b) The queryprogram router detects when it is not running as root,
706 outputs suitable debugging information if -d is set, and then runs
707 the subprocess without attempting to change uid/gid.
708
9edc04ce
PH
709PH/15 Minor change to Makefile for building test_host (undocumented testing
710 feature).
711
1349e1e5
PH
712PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
713 additional section of a DNS packet that returns MX or SRV records.
714 Instead, it always explicitly searches for A/AAAA records. This avoids
715 major problems that occur when a DNS server includes only records of one
716 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
717 fixed another bug: if SRV records were looked up and the corresponding
718 address records were *not* found in the additional section, the port
719 values from the SRV records were lost.
720
ea49d0e1
PH
721PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
722 using the correct key (the original address) when searching the retry
723 rules in order to find which one to use for generating the retry hint.
724
064a94c9
PH
725PH/18 If quota_warn_message contains a From: header, Exim now refrains from
726 adding the default one. Similarly, if it contains a Reply-To: header, the
727 errors_reply_to option, if set, is not used.
728
727071f8
PH
729PH/19 When calculating a retry time, Exim used to measure the "time since
730 failure" by looking at the "first failed" field in the retry record. Now
731 it does not use this if it is later than than the arrival time of the
732 message. Instead it uses the arrival time. This makes for better
733 behaviour in cases where some deliveries succeed, thus re-setting the
734 "first failed" field. An example is a quota failure for a huge message
735 when small messages continue to be delivered. Without this change, the
736 "time since failure" will always be short, possible causing more frequent
737 delivery attempts for the huge message than are intended.
dd16e114 738 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 739
f78eb7c6
PH
740PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
741 $1, $2, $3) because the numerical variables can be reset during some
742 expansion items (e.g. "match"), thereby losing the authentication data.
743
21c28500
PH
744PH/21 Make -bV show the size of off_t variables so that the test suite can
745 decide whether to run tests for quotas > 2G.
746
747PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
748 mailbox_size, and mailbox_filecount in the appendfile transport. If a
749 filecount value is greater than 2G or if a quota value is greater than 2G
750 on a system where the size of off_t is not greater than 4, a panic error
751 is given.
752
1688f43b
PH
753PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
754 never match. The debug and -bh output now contains an explicit error
755 message indicating a malformed IPv4 address or mask.
756
757PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
758 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
759 PH/23 above applies.
760
9675b384
PH
761PH/25 Do not write to syslog when running in the test harness. The only
762 occasion when this arises is a failure to open the main or panic logs
763 (for which there is an explicit test).
764
6a3f1455
PH
765PH/26 Added the /no_tell option to "control=freeze".
766
dac79d3e
PH
767PH/27 If a host name lookup failed very early in a connection, for example, if
768 the IP address matched host_lookup and the reverse lookup yielded a name
769 that did not have a forward lookup, an error message of the form "no IP
770 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
771 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 772
5977a0b3
PH
773PH/28 An enabling patch from MH: add new function child_open_exim2() which
774 allows the sender and the authenticated sender to be set when
775 submitting a message from within Exim. Since child_open_exim() is
776 documented for local_scan(), the new function should be too.
777
c91535f3
PH
778PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
779 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
780 results in an empty string is now treated as unset.
781
0d46a8c8
PH
782PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
783
278c6e6c
PH
784PH/31 Added sender_verify_fail logging option.
785
2cbb4081
PH
786PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
787 needed by RFC 822 but not by RFC 2822 was commented out. I have now
788 tidied the source and removed it altogether.
789
3eef829e
PH
790PH/33 When a queue run was abandoned because the load average was too high, a
791 log line was always written; now it is written only if the queue_run log
792 selector is set. In addition, the log line for abandonment now contains
793 information about the queue run such as the pid. This is always present
794 in "start" and "stop" lines but was omitted from the "abandon" line.
795
1ab95fa6
PH
796PH/34 Omit spaces between a header name and the colon in the error message that
797 is given when verify = headers_syntax fails (if there are lots of them,
798 the message gets confusing).
799
230205fc
PH
800PH/35 Change the default for dns_check_names_pattern to allow slashes within
801 names, as there are now some PTR records that contain slashes. This check
802 is only to protect against broken name servers that fall over on strange
803 characters, so the fact that it applies to all lookups doesn't matter.
804
75e0e026
PH
805PH/36 Now that the new test suite is complete, we can remove some of the
806 special code in Exim that was needed for the old test suite. For example,
807 sorting DNS records because real resolvers return them in an arbitrary
808 order. The new test suite's fake resolver always returns records in the
809 same order.
810
811PH/37 When running in the test harness, use -odi for submitted messages (e.g.
812 bounces) except when queue_only is set, to avoid logging races between
813 the different processes.
814
145396a6
PH
815PH/38 Panic-die if .include specifies a non-absolute path.
816
3cd34f13
PH
817PH/39 A tweak to the "H" retry rule from its user.
818
11121d3d
JJ
819JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
820 a label. They prevented compilation on older perls.
821
822JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
823 a warning to be raised on newish perls.
824
825JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
826 on queue. Changes to match documented behaviour of showing count of
827 messages matching specified criteria.
828
8def5aaf
PH
829PH/40 Changed the default ident timeout from 30s to 5s.
830
929ba01c
PH
831PH/41 Added support for the use of login_cap features, on those BSD systems
832 that have them, for controlling the resources used by pipe deliveries.
833
2632889e
PH
834PH/42 The content-scanning code uses fopen() to create files in which to put
835 message data. Previously it was not paying any attention to the mode of
836 the files. Exim runs with umask(0) because the rest of the code creates
837 files with open(), and sets the required mode explicitly. Thus, these
838 files were ending up world-writeable. This was not a big issue, because,
839 being within the spool directory, they were not world-accessible. I have
840 created a function called modefopen, which takes an additional mode
841 argument. It sets umask(777), creates the file, chmods it to the required
842 mode, then resets the umask. All the relevant calls to fopen() in the
843 content scanning code have been changed to use this function.
844
944a9c55
PH
845PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
846 to 24 hours. This avoids potential overflow problems when processing G
847 and H retry rules. I suspect nobody ever tinkers with this value.
848
4a23603b
PH
849PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
850
4730f942
PH
851PH/45 When the plaintext authenticator is running as a client, the server's
852 challenges are checked to ensure they are valid base64 strings. By
853 default, the authentication attempt is cancelled if an invalid string is
854 received. Setting client_ignore_invalid_base64 true ignores these errors.
855 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
856 they are received. Thus, the responses can be made to depend on the
857 challenges. If an invalid string is ignored, an empty string is placed in
858 the variable.
859
30dba1e6
PH
860PH/46 Messages that are created by the autoreply transport now contains a
861 References: header, in accordance with RFCs 2822 and 3834.
862
382afc6b
PH
863PH/47 Added authenticated_sender_force to the smtp transport.
864
a86229cf
PH
865PH/48 The ${prvs expansion was broken on systems where time_t was long long.
866
50c99ba6
PH
867PH/49 Installed latest patch from the Sieve maintainer.
868
d35e429d
PH
869PH/50 When an Exim quota was set without a file count quota, and mailbox_size
870 was also set, the appendfile transport was unnecessarily scanning a
871 directory of message files (e.g. for maildir delivery) to find the count
872 of files (along with the size), even though it did not need this
873 information. It now does the scan only if it needs to find either the
874 size of the count of files.
875
f90d018c
PH
876PH/51 Added ${time_eval: to convert Exim time strings into seconds.
877
75def545
PH
878PH/52 Two bugs concerned with error handling when the smtp transport is
879 used in LMTP mode:
880
881 (i) Exim was not creating retry information for temporary errors given
882 for individual recipients after the DATA command when the smtp transport
883 was used in LMTP mode. This meant that they could be retried too
884 frequently, and not timed out correctly.
885
886 (ii) Exim was setting the flag that allows error details to be returned
887 for LMTP errors on RCPT commands, but not for LMTP errors for individual
888 recipients that were returned after the DATA command.
889
890PH/53 This is related to PH/52, but is more general: for any failing address,
891 when detailed error information was permitted to be returned to the
892 sender, but the error was temporary, then after the final timeout, only
893 "retry timeout exceeded" was returned. Now it returns the full error as
894 well as "retry timeout exceeded".
895
c46782ef
PH
896PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
897 do this, and (what is worse) MTAs that accept it.
898
71fafd95
PH
899PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
900 will now be deprecated.
901
2c5db4fd
PH
902PH/56 New os.c-cygwin from the Cygwin maintainer.
903
9cf6b11a
JJ
904JJ/06 exipick: added --unsorted option to allow unsorted output in all output
905 formats (previously only available in exim formats via -bpr, -bpru,
906 and -bpra. Now also available in native and exiqgrep formats)
907
908JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
909 with very large, slow to parse queues
910
911JJ/08 exipick: added ! as generic prefix to negate any criteria format
912
913JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
914
898d150f
PH
915PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
916 responses to authentication challenges, though it was showing the
917 challenges; (ii) I've removed the CR characters from the debug output for
918 SMTP output lines.
919
46218253
PH
920PH/58 Allow for the insertion of a newline as well as a space when a string
921 is turned into more than one encoded-word during RFC 2047 encoding. The
922 Sieve code now uses this.
923
e97957bc
PH
924PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
925 data_4xx, lost_connection, tls_required.
926
81e509d7
PH
927PH/60 When a VRFY deferred or FAILED, the log message rather than the user
928 message was being sent as an SMTP response.
929
3d240ff7
PH
930PH/61 Add -l and -k options to exicyclog.
931
b37c4101
PH
932PH/62 When verifying, if an address was redirected to one new address, so that
933 verification continued, and the new address failed or deferred after
934 having set something in $address_data, the value of $address_data was not
935 passed back to the ACL. This was different to the case when no
936 redirection occurred. The value is now passed back in both cases.
937
79378e0f
PH
938PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
939 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
940 use login_cap.h, so on its own it isn't the distinguishing feature. The
941 new name refers directly to the setclassresources() function.
942
e49c7bb4
PH
943PH/65 Added configuration files for NetBSD3.
944
d114ec46
PH
945PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
946
f3d7df6c
PH
947PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
948 is preferred over IPv4.
949
715ab376
PH
950PH/68 The bounce_return_message and bounce_return_body options were not being
951 honoured for bounces generated during the reception of non-SMTP messages.
952 In particular, this applied to messages rejected by the ACL. This bug has
953 been fixed. However, if bounce_return_message is true and bounce_return_
954 body is false, the headers that are returned for a non-SMTP message
955 include only those that have been read before the error was detected.
956 (In the case of an ACL rejection, they have all been read.)
957
6b31b150
PH
958PH/69 The HTML version of the specification is now built in a directory called
959 spec_html instead of spec.html, because the latter looks like a path with
960 a MIME-type, and this confuses some software.
961
962PH/70 Catch two compiler warnings in sieve.c.
963
d515a917
PH
964PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
965 function verify_get_ident() calls ip_connect() to connect a socket, but
966 if the "connect()" function timed out, ip_connect() used to close the
967 socket. However, verify_get_ident() also closes the socket later, and in
968 between Exim writes to the log, which may get opened at this point. When
969 the socket was closed in ip_connect(), the log could get the same file
970 descriptor number as the socket. This naturally causes chaos. The fix is
971 not to close the socket in ip_connect(); the socket should be closed by
972 the function that creates it. There was only one place in the code where
973 this was missing, in the iplookup router, which I don't think anybody now
974 uses, but I've fixed it anyway.
975
9b8fadde
PH
976PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
977 well as to direct DNS lookups. Otherwise the handling of names in host
978 lists is inconsistent and therefore confusing.
979
214e2000 980
5de37277
PH
981Exim version 4.60
982-----------------
983
cc38ddbf
PH
984PH/01 Two changes to the default runtime configuration:
985
986 (1) Move the checks for relay_from_hosts and authenticated clients from
987 after to before the (commented out) DNS black list checks.
988
989 (2) Add control=submission to the relay_from_hosts and authenticated
990 clients checks, on the grounds that messages accepted by these
991 statements are most likely to be submissions.
5de37277 992
72fdd6ae
PH
993PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
994
995 (1) Generate an error if the third argument for the ${prvs expansion is
996 not a single digit.
997
998 (2) Treat a missing third argument of ${prvscheck as if it were an empty
999 string.
1000
1001 (3) Reset the variables that are obtained from the first argument of
1002 ${prvscheck and used in the second argument before leaving the code,
1003 because their memory is reclaimed, so using them afterwards may do
1004 silly things.
1005
1006 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1007 one (it's much easier than Tom thought :-).
1008
1009 (5) Because of (4), we can now allow for the use of $prvscheck_result
1010 inside the third argument.
cb9328de 1011
cb741023
PH
1012PH/03 For some reason, the default setting of PATH when running a command from
1013 a pipe transport was just "/usr/bin". I have changed it to
1014 "/bin:/usr/bin".
1015
f174f16e
PH
1016PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1017 anything to be listed in the output from -bV.
b2f5a032 1018
c25242d7
PH
1019PH/05 When a filter generated an autoreply, the entire To: header line was
1020 quoted in the delivery log line, like this:
1021
1022 => >A.N.Other <ano@some.domain> <original@ddress> ...
1023
1024 This has been changed so that it extracts the operative address. There
1025 may be more than one such address. If so, they are comma-separated, like
1026 this:
1027
1028 => >ano@some.domain,ona@other.domain <original@ddress> ...
1029
82c19f95
PH
1030PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1031 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1032 not being looked up in the rDNS to get a host name, Exim was showing the
1033 IP address twice in Received: lines, even though the IP addresses were
1034 identical. For example:
1035
1036 Received: from [1.2.3.4] (helo=[1.2.3.4])
1037
1038 However, if the real host name was known, it was omitting the HELO data
1039 if it matched the actual IP address. This has been tidied up so that it
1040 doesn't show the same IP address twice.
1041
d7ffbc12
PH
1042PH/07 When both +timestamp and +memory debugging was on, the value given by
1043 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1044 called by the debug printing, thereby overwriting the timestamp buffer.
1045 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1046
9f526266
PH
1047PH/08 When the original message was included in an autoreply transport, it
1048 always said "this is a copy of the message, including all the headers",
1049 even if body_only or headers_only was set. It now gives an appropriate
1050 message.
1051
87fcc8b9
PH
1052PH/09 Applied a patch from the Sieve maintainer which:
1053
1054 o fixes some comments
1055 o adds the (disabled) notify extension core
1056 o adds some debug output for the result of if/elsif tests
1057 o points to the current vacation draft in the documentation
1058 and documents the missing references header update
1059
1060 and most important:
1061
1062 o fixes a bug in processing the envelope test (when testing
1063 multiple envelope elements, the last element determinted the
1064 result)
1065
456682f5
PH
1066PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1067 Electronic Mail") by including:
1068
1069 Auto-submitted: auto-generated
1070
1071 in the messages that it generates (bounce messages and others, such as
1072 warnings). In the case of bounce messages for non-SMTP mesages, there was
1073 also a typo: it was using "Auto_submitted" (underscore instead of
1074 hyphen). Since every message generated by Exim is necessarily in response
1075 to another message, thes have all been changed to:
1076
1077 Auto-Submitted: auto-replied
1078
1079 in accordance with these statements in the RFC:
1080
1081 The auto-replied keyword:
1082
1083 - SHOULD be used on messages sent in direct response to another
1084 message by an automatic process,
1085
1086 - MUST NOT be used on manually-generated messages,
1087
1088 - MAY be used on Delivery Status Notifications (DSNs) and Message
1089 Disposition Notifications (MDNs),
1090
1091 - MUST NOT be used on messages generated by automatic or periodic
1092 processes, except for messages which are automatic responses to
1093 other messages.
1094
3e46c1aa
PH
1095PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1096 to the default Received: header definition.
456682f5 1097
49826d12
PH
1098PH/12 Added log selector acl_warn_skipped (default on).
1099
eba0c039
PH
1100PH/13 After a successful wildlsearch lookup, discard the values of numeric
1101 variables because (a) they are in the wrong storage pool and (b) even if
1102 they were copied, it wouldn't work properly because of the caching.
1103
a0d6ba8a
PH
1104PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1105 checking when decoding. Apparently there are clients that generate
1106 overlong encoded strings. Why am I not surprised?
1107
f0917727
PH
1108PH/15 If the first argument of "${if match_address" was not empty, but did not
1109 contain an "@" character, Exim crashed. Now it writes a panic log message
1110 and treats the condition as false.
1111
096fee00
PH
1112PH/16 In autoreply, treat an empty string for "once" the same as unset.
1113
024bd3c2
PH
1114PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1115 extension "envelope-auth". The code is finished and in agreement with
1116 other implementations, but there is no documentation so far and in fact,
1117 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1118 not changing the active code.
1119
1120 Print executed "if" and "elsif" statements when debugging is used. This
1121 helps a great deal to understand what a filter does.
1122
1123 Document more things not specified clearly in RFC3028. I had all this
1124 sorted out, when out of a sudden new issues came to my mind. Oops."
1125
df199fec
PH
1126PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1127 (Bugzilla #53).
1128
d27f1df3
PH
1129PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1130 canonical form (as documented). However, after a host name lookup from
1131 the IP address, check_host() was doing a simple string comparison with
1132 addresses acquired from the DNS when checking that the found name did
1133 have the original IP as one of its addresses. Since any found IPv6
1134 addresses are likely to be in abbreviated form, the comparison could
1135 fail. Luckily, there already exists a function for doing the comparison
1136 by converting both addresses to binary, so now that is used instead of
1137 the text comparison.
1138
96776534
PH
1139PH/20 There was another similar case to PH/19, when a complete host name was
1140 given in a host list; looking up its IP address could give an abbreviated
1141 form, whereas the current host's name might or might not be abbreviated.
1142 The same fix has been applied.
1143
5de37277 1144
9a799bc0
PH
1145Exim version 4.54
1146-----------------
1147
1148PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1149 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1150 It now does.
1151
99a4b039
PH
1152PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1153 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1154
1155PH/03 Typo: missing ".o" in src/pcre/Makefile.
1156
4b233853
PH
1157PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1158 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1159 Also, for "Auto-Submitted", treat anything other than "no" as
1160 non-personal, in accordance with RFC 3834. (Previously it treated
1161 anything starting "auto-" as non-personal.)
1162
8857ccfd
PH
1163TF/01 The control=submission/name=... option had a problem with syntax
1164 errors if the name included a slash character. The /name= option
1165 now slurps the rest of the string, so it can include any characters
1166 but it must come last in the list of options (after /sender_retain
1167 or /domain=).
1168
433a2980
PH
1169PH/05 Some modifications to the interface to the fake nameserver for the new
1170 testing suite.
1171
3e46c1aa 1172
9a799bc0 1173
e3a311ba
TK
1174Exim version 4.53
1175-----------------
1176
1177TK/01 Added the "success_on_redirect" address verification option. See
1178 NewStuff for rationale and an example.
1179
13b685f9
PH
1180PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1181
395ff96d
PH
1182PH/02 Patch to exigrep to allow it to work on syslog lines.
1183
5b68f6e4
PH
1184PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1185 fread() to skip over the body file's header line, because in Cygwin the
1186 header line is locked and is inaccessible.
1187
1ab52c69
PH
1188PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1189 co-exist for some time) to make it clear that it is the Exim ID that is
1190 referenced, not the Message-ID: header line.
1191
b07e6aa3
PH
1192PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1193 string_format() function, because snprintf() does not exist on all
1194 operating systems.
1195
254e032f
PH
1196PH/06 The use of forbid_filter_existstest now also locks out the use of the
1197 ${stat: expansion item.
1198
3af76a81
PH
1199PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1200 protocol synchronization error", to keep the pedants happy.
1201
2548ba04
PH
1202PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1203 well as for IRIX systems, when gcc is being used. See the host.c source
1204 file for comments.
1205
b6c6011d
PH
1206PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1207
cf39cf57
PH
1208PH/10 Named domain lists were not working if used in a queue_smtp_domains
1209 setting.
1210
f1513293
PH
1211PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1212 transport and to the smtp transport in LMTP mode.
1213
727549a4
PH
1214TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1215
af46795e
PH
1216PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1217 run a filter in a subprocess. This could lead to confusion in subsequent
1218 lookups in the parent process. There should also be a search_tidyup() at
1219 the end of the subprocess.
1220
d7b47fd0
PH
1221PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1222 only if the host matched helo_try_verify_hosts, which caused the
1223 verification to occur when the EHLO/HELO command was issued. The ACL just
1224 tested the remembered result. Now, if a previous verification attempt has
1225 not happened, "verify = helo" does it there and then.
1226
ee744174
JJ
1227JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1228
b582ab87
PH
1229TK/03 Fix log output including CR from clamd.
1230
41a13e0a
PH
1231PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1232 exist provoked a memory error which could cause a segfault.
1233
f625cc5a
PH
1234PH/15 Installed PCRE 6.2
1235
1236PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1237
21f7af35
PH
1238PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1239 of the problem. Specifically, suggested +O2 rather than +O1 for the
1240 HP-UX compiler.
1241
31480e42
PH
1242PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1243
2d280592
PH
1244PH/20 If a delivery was routed to a non-standard port by means of an SRV
1245 record, the port was not correctly logged when the outgoing_port log
1246 selector was set (it logged the transort's default port).
1247
7cd1141b
PH
1248PH/21 Added support for host-specific ports to manualroute, queryprogram,
1249 fallback_hosts, and "hosts" in the smtp transport.
1250
1251PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1252 host errors such as "Connection refused".
1253
750af86e
PH
1254PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1255 authentication with radiusclient 0.4.9:
1256
1257 - Error returned from rc_read_config was caught wrongly
1258 - Username/password not passed on to radius server due to wrong length.
1259
1260 The presumption is that some radiusclient API changes for 4.51/PH/17
1261 were not taken care of correctly. The code is still untested by me (my
1262 Linux distribution still has 0.3.2 of radiusclient), but it was
1263 contributed by a Radius user.
1264
1265PH/24 When doing a callout, the value of $domain wasn't set correctly when
1266 expanding the "port" option of the smtp transport.
1267
4304270b
TK
1268TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1269 while reading a MIME header. Thanks to Tom Hughes for a patch.
1270
750af86e
PH
1271PH/24 Include config.h inside local_scan.h so that configuration settings are
1272 available.
1273
64ffc24f
PH
1274PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1275 that in an ACL for RCPT (for example), you can examine exactly what was
1276 received.
1277
5dd9625b
PH
1278PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1279 commands, but it was not correctly comparing the address with the actual
1280 client host address. Thus, it would show the EHLO address in Received:
1281 header lines when this was not necessary.
1282
5591031b
PH
1283PH/27 Added the % operator to ${eval:}.
1284
ba18e66a
PH
1285PH/28 Exim tries to create and chdir to its spool directory when it starts;
1286 it should be ignoring failures (because with -C, for example, it has lost
1287 privilege). It wasn't ignoring creation failures other than "already
1288 exists".
1289
9cec981f
PH
1290PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1291 -bV or -d is used.
1292
aa2b5c79
PH
1293PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1294 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1295 too many continuations, the temporary file was not being removed, and the
1296 return code was incorrect.
aa2b5c79 1297
48a53b7f
PH
1298PH/31 Missing "BOOL" in function definition in filtertest.c.
1299
1c59d63b
PH
1300PH/32 Applied Sieve patches from the maintainer.
1301
671012da
TK
1302TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1303
1509d3a8
PH
1304PH/33 Added "verify = not_blind".
1305
1306PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1307 Local/Makefile (with some defaults set). These are used in built scripts
1308 such as exicyclog, but they have never been used in the exim_install
1309 script (though there are many overriding facilities there). I have
1310 arranged that the exim_install script now takes note of these two
1311 settings.
1312
1313PH/35 Installed configuration files for Dragonfly.
1314
2fe1a124
PH
1315PH/36 When a locally submitted message by a trusted user did not contain a
1316 From: header, and the sender address was obtained from -f or from an SMTP
1317 MAIL command, and the trusted user did not use -F to supply a sender
1318 name, $originator_name was incorrectly used when constructing a From:
1319 header. Furthermore, $originator_name was used for submission mode
1320 messages from external hosts without From: headers in a similar way,
1321 which is clearly wrong.
1322
8800895a
PH
1323PH/37 Added control=suppress_local_fixups.
1324
ccfdb010
PH
1325PH/38 When log_selector = +received_sender was set, and the addition of the
1326 sender made the log line's construction buffer exactly full, or one byte
1327 less than full, an overflow happened when the terminating "\n" was
1328 subsequently added.
1329
1130bfb0
PH
1330PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1331 when the result of a list match is failure because a DNS lookup failed.
1332
ebcb507f
PH
1333PH/40 RM_COMMAND is now used in the building process.
1334
c35e155c
PH
1335PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1336 the "build-* directories that it finds.
1337
95d1f782
PH
1338PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1339 address in a domain literal was a prefix of an interface address.
1340
fd6de02e
PH
1341PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1342 when verifying a sender address, unless rewrite_headers is false.
1343
58de37c5
PH
1344PH/44 Wrote a long comment about why errors_to addresses are verified as
1345 recipients, not senders.
1346
261cf466
TF
1347TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1348 the ratelimit ACL was added.
1349
3ee512ff
PH
1350PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1351
e08c430f
PH
1352PH/46 Added extra information about PostgreSQL errors to the error string.
1353
bef5a11f
PH
1354PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1355 avoiding the need to install special zones in a real server. This is
1356 backwards compatible; if it can't find the fake resolver, it drops back.
1357 Thus, both old and new test suites can be run.
1358
7546de58
TF
1359TF/02 Added util/ratelimit.pl
1360
e5d5a95f
TF
1361TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1362 clock is set back in time.
1363
2e88a017
TF
1364TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1365 Candler <B.Candler@pobox.com>.
1366
a5f65aa4
TF
1367TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1368 OK for addresses that are the result of redirections.
1369
e7726cbf
PH
1370PH/48 A number of further additions for the benefit of the new test suite,
1371 including a fake gethostbyname() that interfaces to the fake DNS resolver
1372 (see PH/47 above).
1373
a7fdad5b
TF
1374TF/06 The fix for widen_domains has also been applied to qualify_single and
1375 search_parents which are the other dnslookup options that can cause
1376 header rewrites.
1377
6af56900
PH
1378PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1379 type ("H").
1380
0925ede6
PH
1381PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1382
66afa403
TF
1383TF/07 Exim produced the error message "an SRV record indicated no SMTP
1384 service" if it encountered an MX record with an empty target hostname.
1385 The message is now "an MX or SRV record indicated no SMTP service".
1386
0154e85a
TF
1387TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1388 if the DNS of the sending site is misconfigured. This is quite a
1389 common situation. This change restores the behaviour of treating a
1390 helo verification defer as a failure.
1391
16f12c76
PH
1392PH/51 If self=fail was set on a router, the bounce message did not include the
1393 actual error message.
1394
bbe902f0 1395
e5a9dba6
PH
1396Exim version 4.52
1397-----------------
1398
1399TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1400
22c3b60b
PH
1401PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1402 command itself ended in error, the underlying message about the transport
1403 filter timeout was being overwritten with the pipe command error. Now the
1404 underlying error message should be appended to the second error message.
1405
06a9b4b5
PH
1406TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1407
c1ac6996
PH
1408PH/02 Reduce the amount of output that "make" produces by default. Full output
1409 can still be requested.
1410
9c7a242c
PH
1411PH/03 The warning log line about a condition test deferring for a "warn" verb
1412 was being output only once per connection, rather than after each
1413 occurrence (because it was using the same function as for successful
1414 "warn" verbs). This seems wrong, so I have changed it.
1415
87ba3f5f
PH
1416TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1417 it should not have, which might have caused a crash in the right
1418 circumstances, but probably never did.
1419
1420PH/04 Installed a modified version of Tony Finch's patch to make submission
1421 mode fix the return path as well as the Sender: header line, and to
1422 add a /name= option so that you can make the user's friendly name appear
1423 in the header line.
1424
29aba418
TF
1425TF/03 Added the control = fakedefer ACL modifier.
1426
fe0dab11
TF
1427TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1428 Mark Lowes for thorough testing.
870f6ba8 1429
11d337a4
TK
1430TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1431
1432TK/03 Merged latest SRS patch from Miles Wilton.
1433
415c8f3b
PH
1434PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1435 with the definition in sysexits.h (which is #included earlier).
1436 Fortunately, Exim does not actually use EX_OK. The code used to try to
1437 preserve the sysexits.h value, by assumimg that macro definitions were
1438 scanned for macro replacements. I have been disabused of this notion,
1439 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1440
958541e9
PH
1441PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1442 in the smtp transport. When a block could not be written in a single
1443 write() function, the timeout was being re-applied to each part-write.
1444 This seems wrong - if the receiver was accepting one byte at a time it
1445 would take for ever. The timeout is now adjusted when this happens. It
1446 doesn't have to be particularly precise.
1447
c206415f
TK
1448TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1449 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1450
2a4be8f9
PH
1451PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1452 without a domain if the check to <postmaster@domain> fails.
1453
1cba11c5
SC
1454SC/01 Eximstats: added -xls and the ability to specify output files
1455 (patch written by Frank Heydlauf).
1456
1457SC/02 Eximstats: use FileHandles for outputing results.
1458
1459SC/03 Eximstats: allow any combination of xls, txt, and html output.
1460
1461SC/04 Eximstats: fixed display of large numbers with -nvr option
1462
1463SC/05 Eximstats: fixed merging of reports with empty tables.
1464
1465SC/06 Eximstats: added the -include_original_destination flag
1466
1467SC/07 Eximstats: removed tabs and trailing whitespace.
1468
1005d00e
TK
1469TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1470
1471TK/06 MBOX spool code: Add real "From " MBOX separator line
1472 so the .eml file is really in mbox format (even though
1473 most programs do not really care). Patch from Alex Miller.
1474
1475TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1476 The latter is generated from $received_to and is only set if the
1477 message has one envelope recipient. SA can use these headers,
1478 obviously out-of-the-box. Patch from Alex Miller.
1479
9b4768fa
PH
1480PH/08 The ${def test on a variable was returning false if the variable's
1481 value was "0", contrary to what the specification has always said!
1482 The result should be true unless the variable is empty.
1483
1484PH/09 The syntax error of a character other than { following "${if
1485 def:variable_name" (after optional whitespace) was not being diagnosed.
1486 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1487 accidental colon was present, for example, could give incorrect results.
1488
0d7eb84a
PH
1489PH/10 Tidied the code in a number of places where the st_size field of a stat()
1490 result is used (not including appendfile, where other changes are about
1491 to be made).
1492
1493PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1494 This involved changing a lot of size variables from int to off_t. It
1495 should work with maildirs and everything.
1496
40727bee
TK
1497TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1498 spamd dying while we are connected to it.
1499
554d2369
TF
1500TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1501 <jgh@wizmail.org>
1502
1f922db1
PH
1503PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1504 function for BDB 4.3.
1505
ef213c3b
PH
1506PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1507
8ac170f3
PH
1508PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1509 the sources for PCRE have been re-arranged and more files are now
1510 involved.
1511
b1c749bb
PH
1512PH/15 The code I had for printing potentially long long variables in PH/11
1513 above was not the best (it lost precision). The length of off_t variables
1514 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1515 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1516 to be "long long int" or "long int". This is needed for the internal
1517 formatting function string_vformat().
b1c749bb 1518
4aac9b49
PH
1519PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1520 the configuration file to be ":syslog", then the script "guesses" where
1521 the logs files are, rather than using the compiled in default. In our
1522 case the guess is not the same as the compiled default, so the script
1523 suddenly stopped working when I started to use syslog. The patch checks
1524 to see if log_file_path is "". If so, it attempts to read it from exim
1525 with no configuration file to get the compiled in version, before it
1526 falls back to the previous guessing code."
1527
294520c8
TK
1528TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1529 implementing BATV in an Exim configuration. See NewStuff for the gory
1530 details.
1531
5bd022fe
PH
1532PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1533 Makefile that are specific to HP-UX.
1534
90e9ce59
PH
1535PH/18 If the "use_postmaster" option was set for a recipient callout together
1536 with the "random" option, the postmaster address was used as the MAIL
1537 FROM address for the random test, but not for the subsequent recipient
1538 test. It is now used for both.
1539
5ea81592
PH
1540PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1541 patch removes a few documentation additions to RFC 3028, because the
1542 latest draft now contains them. It adds the new en;ascii-case comparator
1543 and a new error check for 8bit text in MIME parts. Comparator and
1544 require names are now matched exactly. I enabled the subaddress
1545 extension, but it is not well tested yet (read: it works for me)."
1546
c6c2dc1d
PH
1547PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1548 rework some of the code of TK/09 above to avoid the hardwired use of
1549 "%lld" and "long long". Replaced the call to snprintf() with a call to
1550 string_vformat().
1551
fffffe4c
PH
1552PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1553 records point to non-existent hosts", "retry timeout exceeded", and
1554 "retry time not reached for any host after a long failure period".
ca02eafb 1555
9a26b6b2
PH
1556PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1557 experimental DomainKeys support:
1558
1559 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1560 (2) On an error such as an illegally used "control", the wrong name for
1561 the control was given.
1562
1563 These problems did NOT occur unless DomainKeys support was compiled.
1564
4aee0225
PH
1565PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1566
32d668a5
PH
1567PH/24 Added ${if match_ip condition.
1568
8187c3f3
PH
1569PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1570 databases so that it will be absolutely obvious if a crash occurs in the
1571 DB library. This is a regular occurrence (often caused by mis-matched
1572 db.h files).
1573
ff790e47 1574PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1575 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1576 picked up on a user's system that detects such things. There doesn't seem
1577 to be a gcc warning option for this - only an attribute that has to be
1578 put on the function's prototype. It seems that in Fedora Core 4 they have
1579 set this on a number of new functions. No doubt there will be more in due
1580 course.
ff790e47 1581
5417f6d1
PH
1582PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1583 specify a transport. However, if an address that was verified by such a
1584 router was the subject of a callout, Exim crashed because it tried to
1585 read the rcpt_include_affixes from the non-existent transport. Now it
1586 just assumes that the setting of that option is false. This bug was
1587 introduced by 4.51/PH/31.
1588
59cf8544
PH
1589PH/28 Changed -d+all to exclude +memory, because that information is very
1590 rarely of interest, but it makes the output a lot bigger. People tend to
1591 do -d+all out of habit.
1592
e7ad8a65
PH
1593PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1594 code in os-type was giving problems when libc.so lives in lib64, like on
1595 x86_64 Fedora Core.
1596
ade42478
PH
1597PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1598 aren't the modern standard, and it seems that some systems' include files
1599 don't always have them. Exim was already checking for some of the newer
1600 ones like T_AAAA, and defining it itself. I've added checks for all the
1601 record types that Exim uses.
1602
182ad5cf
PH
1603PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1604 not automatically generating a new one, as it is supposed to. This
1605 prevented TLS from working. If the file did exist, but contained invalid
1606 data, a new version was generated, as expected. It was only the case of a
1607 non-existent file that was broken.
1608
b0d9fc80
TK
1609TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1610 with a change in libdomainkeys > 0.64.
1611
1612TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1613 from DNS. If the selector record carries the flag, it now has
1614 precedence over the domain-wide flag.
1615
1616TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1617
47c7a64a
PH
1618PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1619 the use of a port name that isn't defined in /etc/services) occurred, the
1620 message was deferred as in a normal delivery, and thus remained on the
1621 spool, instead of being failed because of the mua_wrapper setting. This
1622 is now fixed, and I tidied up some of the mua_wrapper messages at the
1623 same time.
1624
a388bce4
SC
1625SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1626 the messages in a hash of arrays rather than using individual hashes.
1627 This is a bit cleaner and results in dramatic memory savings, albeit
1628 at a slight CPU cost.
1629
1630SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1631 as requested by Marc Sherman.
1632
1633SC/10 Eximstats: added histograms for user specified patterns as requested
1634 by Marc Sherman.
1635
0793e4ed
SC
1636SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1637
c58b88df
PH
1638PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1639 fopen() in the content-scanning modules that did not already have it.
1640
e7ad8a65 1641
7982096b
PH
1642Exim version 4.51
1643-----------------
1644
1a46a8c5
PH
1645TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1646 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1647
2f079f46 1648TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1649
1650TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1651
1652PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1653 to test Sieve filters that use "vacation".
1654
1655PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1656 that changes the way the GnuTLS parameters are stored in the cache file.
1657 The new format can be generated externally. For backward compatibility,
1658 if the data in the cache doesn't make sense, Exim assumes it has read an
1659 old-format file, and it generates new data and writes a new file. This
1660 means that you can't go back to an older release without removing the
1661 file.
1662
1663PH/03 A redirect router that has both "unseen" and "one_time" set does not
1664 work if there are any delivery delays because "one_time" forces the
1665 parent to be marked "delivered", so its unseen clone is never tried
1666 again. For this reason, Exim now forbids the simultaneous setting of
1667 these two options.
1668
1669PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1670 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1671 entry if you want to know the details. The fix, however, neglected to
1672 consider the case when local delivery batching is involved. The test for
1673 "previously delivered" was not happening when checking to see if an
1674 address could be batched with a previous (undelivered) one; under
1675 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1676 address.
1a46a8c5
PH
1677
1678PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1679 in its include files, and this causes problems building Exim.
1680
1681PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1682 header_syntax) but Exim was just ignoring anything given after a slash.
1683 In particular, this caused confusion with an attempt to use "verify =
1684 reverse_host_lookup/defer_ok". An error is now given when options are
1685 supplied for verify items that do not have them. (Maybe reverse_host_
1686 lookup should have a defer_ok option, but that's a different point.)
1687
1688PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1689 defined by RFC 821) to 2048, because there were problems with some AUTH
1690 commands, and RFC 1869 says the size should be increased for extended
1691 SMTP commands that take arguments.
1692
1693PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1694 Finch).
1695
1696PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1697 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1698
49c2d5ea
PH
1699PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1700 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1701 whatever). Otherwise the password may appear in the log. Following change
1702 PH/42 below, there is no longer a chance of it appearing in a bounce
1703 message.
49c2d5ea 1704
bf759a8b
PH
1705PH/11 Installed exipick version 20050225.0 from John Jetmore.
1706
83364d30
PH
1707PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1708 of its addresses was ever tried. (Bugzilla bug #2.)
1709
7999bbd7
PH
1710PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1711 the result incorrectly in the debug output. (It correctly added a newline
1712 to what was transported.)
1713
7dbf77c9
PH
1714TF/01 Added $received_time.
1715
74e0617f
PH
1716PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1717 commented out examples of how to interface to a virus scanner and to
1718 SpamAssassin. Also added commented examples of av_scanner and
1719 spamd_address settings.
1720
2f079f46
PH
1721PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1722 and controls are allowed in which ACLs. There were a couple of minor
1723 errors. Some of the entries in the conditions table (which is a table of
1724 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1725 negation of where the condition IS allowed.
1726
8c841523
PH
1727PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1728
7766a4f0
PH
1729PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1730 header file does not have a version number, so I've had to invent a new
1731 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1732 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1733 radiusclient), but it was contributed by a Radius user.
1734
8b417f2c
PH
1735PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1736 files or directories, for OpenSSL.
1737
901f42cb
PH
1738PH/19 When an Exim process that is running as root has to create an Exim log
1739 file, it does so in a subprocess that runs as exim:exim so as to get the
1740 ownership right at creation (otherwise, other Exim processes might see
1741 the file with the wrong ownership). There was no test for failure of this
1742 fork() call, which would lead to the process getting stuck as it waited
1743 for a non-existent subprocess. Forks do occasionally fail when resources
1744 run out. I reviewed all the other calls to fork(); they all seem to check
1745 for failure.
1746
f9b9210e
PH
1747PH/20 When checking for unexpected SMTP input at connect time (before writing
1748 the banner), Exim was not dealing correctly with a non-positive return
1749 from the read() function. If the client had disconnected by this time,
1750 the result was a log entry for a synchronization error with an empty
1751 string after "input=" when read() returned zero. If read() returned -1
1752 (an event I could not check), uninitialized data bytes were printed.
1753 There were reports of junk text (parts of files, etc) appearing after
1754 "input=".
1755
54cdb463
PH
1756PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1757
cf00dad6
PH
1758PH/22 Added support for macro redefinition, and (re)definition in between
1759 driver and ACL definitions.
1760
acb1b346
PH
1761PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1762 forgetting to use the resulting value; it was using the unexpanded value.
1763
c5ddb310
PH
1764PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1765 hadn't been configured. The fix is from Juergen Kreileder, who
1766 understands it better than I do:
1767
1768 "Here's what I see happening with three configured cyrus_sasl
1769 authenticators configured (plain, login, cram-md5):
1770
1771 On startup auth_cyrus_sasl_init() gets called for each of these.
1772 This means three calls to sasl_listmech() without a specified mech_list.
1773 => SASL tests which mechs of all available mechs actually work
1774 => three warnings about OTP not working
1775 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1776
1777 With the patch, sasl_listmech() also gets called three times. But now
1778 SASL's mech_list option is set to the server_mech specified in the the
1779 authenticator. Or in other words, the answer from sasl_listmech()
1780 gets limited to just the mech you're testing for (which is different
1781 for each call.)
1782 => the return list contains just 'plain' or 'login', 'cram-md5' or
1783 nothing depending on the value of ob->server_mech.
1784
1785 I've just tested the patch: Authentication still works fine,
1786 unavailable mechs specified in the exim configuration are still
1787 caught, and the auth.log warnings about OTP are gone."
1788
31619da6
PH
1789PH/25 When debugging is enabled, the contents of the command line are added
1790 to the debugging output, even when log_selector=+arguments is not
1791 specified.
1792
bebaf0fc
PH
1793PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1794 answer is "GNU", and only if the return is "GNU/something" is the answer
1795 "Linux".
1796
475fe28a
PH
1797PH/27 $acl_verify_message is now set immediately after the failure of a
1798 verification in an ACL, and so is available in subsequent modifiers. In
1799 particular, the message can be preserved by coding like this:
1800
1801 warn !verify = sender
1802 set acl_m0 = $acl_verify_message
1803
1804 Previously, $acl_verify_message was set only while expanding "message"
1805 and "log_message" when a very denied access.
1806
7e8bec7a
PH
1807PH/28 Modified OS/os.c-Linux with
1808
1809 -#ifndef OS_LOAD_AVERAGE
1810 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1811
1812 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1813 nomenclature these days.)
1814
e4a89c47
PH
1815PH/29 Installed patch from the Sieve maintainer that adds the options
1816 sieve_useraddress and sieve_subaddress to the redirect router.
1817
5ca2a9a1
PH
1818PH/30 In these circumstances:
1819 . Two addresses routed to the same list of hosts;
1820 . First host does not offer TLS;
1821 . First host accepts first address;
1822 . First host gives temporary error to second address;
1823 . Second host offers TLS and a TLS session is established;
1824 . Second host accepts second address.
1825 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1826 and peerdn, if requested) that were in fact used only for the second
1827 address.
7e8bec7a 1828
c688b954
PH
1829PH/31 When doing a callout as part of verifying an address, Exim was not paying
1830 attention to any local part prefix or suffix that was matched by the
1831 router that accepted the address. It now behaves in the same way as it
1832 does for delivery: the affixes are removed from the local part unless
1833 rcpt_include_affixes is set on the transport.
1834
fed77020
PH
1835PH/32 Add the sender address, as F=<...>, to the log line when logging a
1836 timeout during the DATA phase of an incoming message.
1837
7fe1560f
PH
1838PH/33 Sieve envelope tests were broken for match types other than :is. I have
1839 applied a patch sanctioned by the Sieve maintainer.
c688b954 1840
ebb6e6d5
PH
1841PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1842 the uid or gid is negative. A case of a negative gid caused this to be
1843 noticed. The fix allows for either to be negative.
1844
9c4e8f60
PH
1845PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1846 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1847 overlooked.
1848
1849PH/36 The change PH/12 above was broken. Fixed it.
1850
d7174846
PH
1851PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1852 the grounds that routing the same address twice would always produce the
1853 same answer. This might have been true once, but it is certainly no
1854 longer true now. Routing a child address may depend on the previous
1855 routing that produced that child. Some complicated redirection strategies
1856 went wrong when messages had multiple recipients, and made Exim's
1857 behaviour dependent on the order in which the addresses were given.
1858
1859 I have moved the duplicate checking until after the routing is complete.
1860 Exim scans the addresses that are assigned to local and remote
1861 transports, and removes any duplicates. This means that more work will be
1862 done, as duplicates will always all be routed, but duplicates are
1863 presumably rare, so I don't expect this is of any significance.
1864
1865 For deliveries to pipes, files, and autoreplies, the duplicate checking
1866 still happens during the routing process, since they are not going to be
1867 routed further.
1868
cfe75fc3
PH
1869PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1870 It corrects a timeout issue with spamd. This is Ian's comment: "The
1871 background is that sometimes spamd either never reads data from a
1872 connection it has accepted, or it never writes response data. The exiscan
1873 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1874 blindly assumes that writes won't block so it may never time out."
1875
be22d70e
PH
1876PH/39 Allow G after quota size as well as K and M.
1877
0612b098
PH
1878PH/40 The value set for $authenticated_id in an authenticator may not contain
1879 binary zeroes or newlines because the value is written to log lines and
1880 to spool files. There was no check on this. Now the value is run through
1881 the string_printing() function so that such characters are converted to
1882 printable escape sequences.
1883
2e0c1448
PH
1884PH/41 $message_linecount is a new variable that contains the total number of
1885 lines in the message. Compare $body_linecount, which is the count for the
1886 body only.
1887
447d236c
PH
1888PH/42 Exim no longer gives details of delivery errors for specific addresses in
1889 bounce and delay warning messages, except in certain special cases, which
1890 are as follows:
1891
1892 (a) An SMTP error message from a remote host;
1893 (b) A message specified in a :fail: redirection;
1894 (c) A message specified in a "fail" command in a system filter;
1895 (d) A message specified in a FAIL return from the queryprogram router;
1896 (e) A message specified by the cannot_route_message router option.
1897
1898 In these cases only, Exim does include the error details in bounce and
1899 warning messages. There are also a few cases where bland messages such
1900 as "unrouteable address" or "local delivery error" are given.
1901
d20976dc
PH
1902PH/43 $value is now also set for the "else" part of a ${run expansion.
1903
f656d135
PH
1904PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1905 being worked on, but at least Exim now implements the latest version to
1906 play with."
1907
2e2a30b4
PH
1908PH/45 In a pipe transport, although a timeout while waiting for the pipe
1909 process to complete was treated as a delivery failure, a timeout while
1910 writing the message to the pipe was logged, but erroneously treated as a
1911 successful delivery. Such timeouts include transport filter timeouts. For
1912 consistency with the overall process timeout, these timeouts are now
1913 treated as errors, giving rise to delivery failures by default. However,
1914 there is now a new Boolean option for the pipe transport called
1915 timeout_defer, which, if set TRUE, converts the failures into defers for
1916 both kinds of timeout. A transport filter timeout is now identified in
1917 the log output.
1918
9176e9f0
PH
1919PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1920 systems where "make" and "gmake" are different, calling "gmake" at top
1921 level broke things. I've arranged for the value of $(MAKE) to be passed
1922 from the Makefile to this script so that it can call the same version of
1923 "make".
1924
7982096b 1925
bbe902f0
PH
1926A note about Exim versions 4.44 and 4.50
1927----------------------------------------
1928
1929Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1930changes of various kinds. As a consequence, a big documentation update was
1931needed. This delayed the release for rather longer than seemed good, especially
1932in the light of a couple of (minor) security issues. Therefore, the changes
1933that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1934release. So 4.44 and 4.50 are in effect two different branches that both start
1935from 4.43.
1936
1937I have left the 4.50 change log unchanged; it contains all the changes since
19384.43. The change log for 4.44 is below; many of its items are identical to
1939those for 4.50. This seems to be the most sensible way to preserve the
1940historical information.
1941
1942
f7b63901 1943Exim version 4.50
495ae4b0
PH
1944-----------------
1945
5fe762f6
PH
1946 1. Minor wording change to the doc/README.SIEVE file.
1947
139059f6 1948 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1949 computation of the current number of files was incorrect.
495ae4b0 1950
7086e875
PH
1951 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1952 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1953 place.
1954
35af9f61
PH
1955 4. Give more explanation in the error message when the command for a transport
1956 filter fails to execute.
1957
b668c215
PH
1958 5. There are several places where Exim runs a non-Exim command in a
1959 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1960 was being done only for the command run by the queryprogram router. It is
1961 now done for all such subprocesses. The other cases are: ${run, transport
1962 filters, and the commands run by the lmtp and pipe transports.
1963
a494b1e1
PH
1964 6. Added CONFIGURE_GROUP build-time option.
1965
1966 7. Some older OS have a limit of 256 on the maximum number of file
1967 descriptors. Exim was using setrlimit() to set 1000 as a large value
1968 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1969 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1970
c5fcb476
PH
1971 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1972 was an oversight, and furthermore, ever since the addition of extra
1973 controls (e.g. 4.43/32), the checks on when to allow different forms of
1974 "control" were broken. There should now be diagnostics for all cases when a
1975 control that does not make sense is encountered.
1976
69358f02
PH
1977 9. Added the /retain_sender option to "control=submission".
1978
5be20824
PH
197910. $recipients is now available in the predata ACL (oversight).
1980
eb2c0248
PH
198111. Tidy the search cache before the fork to do a delivery from a message
1982 received from the command line. Otherwise the child will trigger a lookup
1983 failure and thereby defer the delivery if it tries to use (for example) a
1984 cached ldap connection that the parent has called unbind on.
1985
2a3eea10
PH
198612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1987 of $address_data from the recipient verification was clobbered by the
1988 sender verification.
1989
199013. The value of address_data from a sender verification is now available in
1991 $sender_address_data in subsequent conditions in the ACL statement.
1992
23c7ff99
PH
199314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1994
4deaf07d
PH
199515. Added a new option "connect=<time>" to callout options, to set a different
1996 connection timeout.
1997
926e1192
PH
199816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1999 was its contents. (It was OK if the option was not defined at all.)
2000
650edc6f
PH
200117. A "Completed" log line is now written for messages that are removed from
2002 the spool by the -Mrm option.
2003
2c7db3f5
PH
200418. New variables $sender_verify_failure and $recipient_verify_failure contain
2005 information about exactly what failed.
2006
3d235903
PH
200719. Added -dd to debug only the daemon process.
2008
7c7ad977
PH
200920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2010 handles timeouts, both on the server side and network timeouts. Renamed the
2011 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2012
981756db
PH
201321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2014 It is now set to "smtps".
2015
d4eb88df
PH
201622. $host_address is now set to the target address during the checking of
2017 ignore_target_hosts.
2018
201923. When checking ignore_target_hosts for an ipliteral router, no host name was
2020 being passed; this would have caused $sender_host_name to have been used if
2021 matching the list had actually called for a host name (not very likely,
2022 since this list is usually IP addresses). A host name is now passed as
2023 "[x.x.x.x]".
2024
7d468ab8
PH
202524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2026 code that specifies a non-restarting handler (typically sigaction() in
2027 modern systems) in an attempt to fix a rare and obscure crash bug.
2028
202925. Narrowed the window for a race in the daemon that could cause it to ignore
2030 SIGCHLD signals. This is not a major problem, because they are used only to
2031 wake it up if nothing else does.
2032
62c0818f
PH
203326. A malformed maildirsize file could cause Exim to calculate negative values
2034 for the mailbox size or file count. Odd effects could occur as a result.
2035 The maildirsize information is now recalculated if the size or filecount
2036 end up negative.
2037
26034054
PH
203827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2039 support for a long time. Removed HAVE_SYS_VFS_H.
2040
af66f652
PH
204128. Installed the latest version of exipick from John Jetmore.
2042
90af77f4
PH
204329. In an address list, if the pattern was not a regular expression, an empty
2044 subject address (from a bounce message) matched only if the pattern was an
2045 empty string. Non-empty patterns were not even tested. This was the wrong
2046 because it is perfectly reasonable to use an empty address as part of a
2047 database query. An empty address is now tested by patterns that are
2048 lookups. However, all the other forms of pattern expect the subject to
2049 contain a local part and a domain, and therefore, for them, an empty
2050 address still always fails if the pattern is not itself empty.
2051
d8ef3577
PH
205230. Exim went into a mad DNS loop when attempting to do a callout where the
2053 host was specified on an smtp transport, and looking it up yielded more
2054 than one IP address.
2055
5cb8cbc6
PH
205631. Re-factored the code for checking spool and log partition space into a
2057 function that finds that data and another that does the check. The former
2058 is then used to implement four new variables: $spool_space, $log_space,
2059 $spool_inodes, and $log_inodes.
2060
14702f5b
PH
206132. The RFC2047 encoding function was originally intended for short strings
2062 such as real names; it was not keeping to the 75-character limit for
2063 encoded words that the RFC imposes. It now respects the limit, and
2064 generates multiple encoded words if necessary. To be on the safe side, I
2065 have increased the buffer size for the ${rfc2047: expansion operator from
2066 1024 to 2048 bytes.
2067
063b1e99
PH
206833. It is now permitted to omit both strings after an "if" condition; if the
2069 condition is true, the result is "true". As before, when the second string
2070 is omitted, a false condition yields an empty string. This makes it less
2071 cumbersome to write custom ACL and router conditions.
2072
652e1b65
PH
207334. Failure to deliver a bounce message always caused it to be frozen, even if
2074 there was an errors_to setting on the router. The errors_to setting is now
2075 respected.
2076
6f0c9a4f
PH
207735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2078 canonical form (fully expanded) before being placed in
2079 $sender_host_address.
2080
33397d19
PH
208136. The table in the code that translates DNS record types into text (T_A to
2082 "A" for instance) was missing entries for NS and CNAME. It is just possible
2083 that this could have caused confusion if both these types were looked up
2084 for the same domain, because the text type is used as part of Exim's
2085 per-process caching. But the chance of anyone hitting this buglet seems
2086 very small.
2087
7bb56e1f
PH
208837. The dnsdb lookup has been extended in a number of ways.
2089
2090 (1) There is a new type, "zns", which walks up the domain tree until it
2091 finds some nameserver records. It should be used with care.
2092
ea3bc19b
PH
2093 (2) There is a new type, "mxh", which is like "mx" except that it returns
2094 just the host names, not the priorities.
2095
2096 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2097 looked up. The behaviour when one of the lookups defers can be
2098 controlled by a keyword.
7bb56e1f 2099
ea3bc19b 2100 (4) It is now possible to specify the separator character for use when
7bb56e1f 2101 multiple records are returned.
33397d19 2102
0bcb2a0e
PH
210338. The dnslists ACL condition has been extended: it is now possible to supply
2104 a list of IP addresses and/or domains to be looked up in a particular DNS
2105 domain.
2106
2ac0e484
PH
210739. Added log_selector=+queue_time_overall.
2108
4e1fde53
PH
210940. When running the queue in the test harness, wait just a tad after forking a
2110 delivery process, to get repeatability of debugging output.
2111
de365ded
PH
211241. Include certificate and key file names in error message when GnuTLS fails
2113 to set them up, because the GnuTLS error message doesn't include the name
2114 of the failing file when there is a problem reading it.
2115
f05da2e8
PH
211642. Allow both -bf and -bF in the same test run.
2117
d6453af2
PH
211843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2119
f7b63901
PH
212044. The "Exiscan patch" is now merged into the mainline Exim source.
2121
212245. Sometimes the final signoff response after QUIT could fail to get
2123 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2124 < 0 before doing a fflush(). This bug looks as though it goes back to the
2125 introduction of TLS in release 3.20, but "sometimes" must have been rare
2126 because the tests only now provoked it.
2127
a444213a
PH
212846. Reset the locale to "C" after calling embedded Perl, in case it was changed
2129 (this can affect the format of dates).
2130
0ec020ea
PH
213147. exim_tidydb, when checking for the continued existence of a message for
2132 which it has found a message-specific retry record, was not finding
2133 messages that were in split spool directories. Consequently, it was
2134 deleting retry records that should have stayed in existence.
2135
b1206957
PH
213648. Steve fixed some bugs in eximstats.
2137
213849. The SPA authentication driver was not abandoning authentication and moving
2139 on to the next authenticator when an expansion was forced to fail,
2140 contradicting the general specification for all authenticators. Instead it
2141 was generating a temporary error. It now behaves as specified.
2142
26dd5a95
PH
214350. The default ordering of permitted cipher suites for GnuTLS was pessimal
2144 (the order specifies the preference for clients). The order is now AES256,
2145 AES128, 3DES, ARCFOUR128.
2146
343b2385
PH
214751. Small patch to Sieve code - explicitly set From: when generating an
2148 autoreply.
2149
1c5466b9
PH
215052. Exim crashed if a remote delivery caused a very long error message to be
2151 recorded - for instance if somebody sent an entire SpamAssassin report back
2152 as a large number of 550 error lines. This bug was coincidentally fixed by
2153 increasing the size of one of Exim's internal buffers (big_buffer) that
2154 happened as part of the Exiscan merge. However, to be on the safe side, I
2155 have made the code more robust (and fixed the comments that describe what
2156 is going on).
2157
55ee9ee3
PH
215853. Now that there can be additional text after "Completed" in log lines (if
2159 the queue_time_overall log selector is set), a one-byte patch to exigrep
2160 was needed to allow it to recognize "Completed" as not the last thing in
2161 the line.
2162
d38f8232
PH
216354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2164 patch that reportedly fixes this has been added. I am not expert enough to
2165 create a test for it. This is what the patch creator wrote:
2166
2167 "I found a little strange behaviour of ldap code when working with
2168 Windows 2003 AD Domain, where users was placed in more than one
2169 Organization Units. When I tried to give exim partial DN, the exit code
2170 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2171 But simultaneously result of request was absolutely normal ldap result,
2172 so I produce this patch..."
2173
3295e65b
PH
2174 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2175 REFERENCE, so I have modified the code to exclude the patch when that macro
2176 is not defined.
2177
7102e136
PH
217855. Some experimental protocols are using DNS PTR records for new purposes. The
2179 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2180 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2181 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2182 CAN-2005-0021
7102e136 2183
3ca0ba97
PH
218456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2185
c2bcbe20
PH
218657. Double the size of the debug message buffer (to 2048) so that more of very
2187 long debug lines gets shown.
2188
18ce445d
PH
218958. The exicyclog utility now does better if the number of log files to keep
2190 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2191
1f5b4c3d
PH
219259. Two changes related to the smtp_active_hostname option:
2193
2194 (1) $smtp_active_hostname is now available as a variable.
2195 (2) The default for smtp_banner uses $smtp_active_hostname instead
2196 of $primary_hostname.
2197
b975ba52
PH
219860. The host_aton() function is supposed to be passed a string that is known
2199 to be a valid IP address. However, in the case of IPv6 addresses, it was
2200 not checking this. This is a hostage to fortune. Exim now panics and dies
2201 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2202 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2203 components; fortuitously, this particular loophole had already been fixed
2204 by change 4.50/55 above.
2205
2206 If there are any other similar loopholes, the new check in host_aton()
2207 itself should stop them being exploited. The report I received stated that
2208 data on the command line could provoke the exploit when Exim was running as
2209 exim, but did not say which command line option was involved. All I could
2210 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2211 running as the user.
ea3a6f44 2212 CAN-2005-0021
85b87bc2
PH
2213
221461. There was a buffer overflow vulnerability in the SPA authentication code
2215 (which came originally from the Samba project). I have added a test to the
2216 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2217 CAN-2005-0022
b975ba52 2218
17ffcae7
PH
221962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2220 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2221
d95f9fdb
PH
222263. The daemon start-up calls getloadavg() while still root for those OS that
2223 need the first call to be done as root, but it missed one case: when
2224 deliver_queue_load_max is set with deliver_drop_privilege. This is
2225 necessary for the benefit of the queue runner, because there is no re-exec
2226 when deliver_drop_privilege is set.
2227
86b8287f
PH
222864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2229 This has been fixed.
2230
60dc5e56
PH
223165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2232 was in use, was not putting the data itself into the right store pool;
2233 consequently, it could be overwritten for a subsequent message in the same
2234 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2235 the caching.)
2236
533244af
PH
223766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2238
a5a28604
PH
223967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2240 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2241 the function were treating the return as a boolean value, which happened to
2242 work because 0=false and not-0=true, but is not correct code.
2243
7e634d24
PH
224468. The host_aton() function was not handling scoped IPv6 addresses (those
2245 with, for example, "%eth0" on the end) correctly.
2246
3e11c26b
PH
224769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2248 negated items (that is, ~something) in unsigned ints. Some compilers
2249 apparently mutter when there is no cast.
2250
6729cf78
PH
225170. If an address verification called from an ACL failed, and did not produce a
2252 user-specific message (i.e. there was only a "system" message), nothing was
2253 put in $acl_verify_message. In this situation, it now puts the system
2254 message there.
2255
00f00ca5
PH
225671. Change 4.23/11 added synchronization checking at the start of an SMTP
2257 session; change 4.31/43 added the unwanted input to the log line - except
2258 that it did not do this in the start of session case. It now does.
2259
c9bdd01c
PH
226072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2261 This is wrong and can cause the other end to generate a synchronization
2262 error if it is another Exim or anything else that does the synchronization
2263 check. A QUIT command is no longer sent after a timeout.
2264
d43194df
PH
226573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2266 during host lookups.
2267
fe5b5d0b
PH
226874. The defer_ok option of callout verification was not working if it was used
2269 when verifying addresses in header lines, that is, for this case:
2270
2271 verify = header_sender/callout=defer_ok
2272
76a2d7ba
PH
227375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2274 those file descriptors could be used for SMTP connections. If anything
2275 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2276 could be sent to the SMTP client, causing chaos. The daemon now opens
2277 stdin, stdout, and stderr to /dev/null when it puts itself into the
2278 background.
2279
228076. Arrange for output from Perl's "warn" command to be written to Exim's main
2281 log by default. The user can override this with suitable Perl magic.
2282
04f7d5b9
PH
228377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2284 the log message when discard triggers, was not working for the DATA ACL or
2285 for the non-SMTP ACL.
2286
bc60667e
PH
228778. Error message wording change in sieve.c.
2288
bb6e88ff
PH
228979. If smtp_accept_max_per_host was set, the number of connections could be
2290 restricted to fewer than expected, because the daemon was trying to set up
2291 a new connection before checking whether the processes handling previous
2292 connections had finished. The check for completed processes is now done
2293 earlier. On busy systems, this bug wouldn't be noticed because something
2294 else would have woken the daemon, and it would have reaped the completed
2295 process earlier.
2296
1e70f85b
PH
229780. If a message was submitted locally by a user whose login name contained one
2298 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2299 It caused a spool format error. I have fixed the spool reading code. A
2300 related problem was that the "from" clause in the Received: line became
2301 illegal because of the space(s). It is now covered by ${quote_local_part.
2302
230381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2304 tables).
2305
4e01f9d6
PH
230682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2307
1ee1cef2
PH
230883. Patch from Sieve maintainer to fix unterminated string problem in
2309 "vacation" handling.
2310
6e2b4ccc
PH
231184. Some minor changes to the Linux configuration files to help with other
2312 OS variants using glibc.
2313
8e669ac1
PH
231485. One more patch for Sieve to update vacation handling to latest spec.
2315
495ae4b0 2316
bbe902f0
PH
2317----------------------------------------------------
2318See the note above about the 4.44 and 4.50 releases.
2319----------------------------------------------------
2320
2321
2322Exim version 4.44
2323-----------------
2324
2325 1. Change 4.43/35 introduced a bug that caused file counts to be
2326 incorrectly computed when quota_filecount was set in an appendfile
2327 transport
2328
2329 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2330 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2331 place.
2332
2333 3. Give more explanation in the error message when the command for a transport
2334 filter fails to execute.
2335
2336 4. There are several places where Exim runs a non-Exim command in a
2337 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2338 was being done only for the command run by the queryprogram router. It is
2339 now done for all such subprocesses. The other cases are: ${run, transport
2340 filters, and the commands run by the lmtp and pipe transports.
2341
2342 5. Some older OS have a limit of 256 on the maximum number of file
2343 descriptors. Exim was using setrlimit() to set 1000 as a large value
2344 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2345 systems. I've change it so that if it can't get 1000, it tries for 256.
2346
2347 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2348 was an oversight, and furthermore, ever since the addition of extra
2349 controls (e.g. 4.43/32), the checks on when to allow different forms of
2350 "control" were broken. There should now be diagnostics for all cases when a
2351 control that does not make sense is encountered.
2352
2353 7. $recipients is now available in the predata ACL (oversight).
2354
2355 8. Tidy the search cache before the fork to do a delivery from a message
2356 received from the command line. Otherwise the child will trigger a lookup
2357 failure and thereby defer the delivery if it tries to use (for example) a
2358 cached ldap connection that the parent has called unbind on.
2359
2360 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2361 of $address_data from the recipient verification was clobbered by the
2362 sender verification.
2363
236410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2365 was its contents. (It was OK if the option was not defined at all.)
2366
236711. A "Completed" log line is now written for messages that are removed from
2368 the spool by the -Mrm option.
2369
237012. $host_address is now set to the target address during the checking of
2371 ignore_target_hosts.
2372
237313. When checking ignore_target_hosts for an ipliteral router, no host name was
2374 being passed; this would have caused $sender_host_name to have been used if
2375 matching the list had actually called for a host name (not very likely,
2376 since this list is usually IP addresses). A host name is now passed as
2377 "[x.x.x.x]".
2378
237914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2380 code that specifies a non-restarting handler (typically sigaction() in
2381 modern systems) in an attempt to fix a rare and obscure crash bug.
2382
238315. Narrowed the window for a race in the daemon that could cause it to ignore
2384 SIGCHLD signals. This is not a major problem, because they are used only to
2385 wake it up if nothing else does.
2386
238716. A malformed maildirsize file could cause Exim to calculate negative values
2388 for the mailbox size or file count. Odd effects could occur as a result.
2389 The maildirsize information is now recalculated if the size or filecount
2390 end up negative.
2391
239217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2393 support for a long time. Removed HAVE_SYS_VFS_H.
2394
ea3a6f44 239518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2396
239719. Allow an empty sender to be matched against a lookup in an address list.
2398 Previously the only cases considered were a regular expression, or an
2399 empty pattern.
2400
240120. Exim went into a mad DNS lookup loop when doing a callout where the
2402 host was specified on the transport, if the DNS lookup yielded more than
2403 one IP address.
2404
ea3a6f44
NM
240521. The RFC2047 encoding function was originally intended for short strings
2406 such as real names; it was not keeping to the 75-character limit for
2407 encoded words that the RFC imposes. It now respects the limit, and
2408 generates multiple encoded words if necessary. To be on the safe side, I
2409 have increased the buffer size for the ${rfc2047: expansion operator from
2410 1024 to 2048 bytes.
bbe902f0 2411
ea3a6f44
NM
241222. Failure to deliver a bounce message always caused it to be frozen, even if
2413 there was an errors_to setting on the router. The errors_to setting is now
2414 respected.
bbe902f0
PH
2415
241623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2417 canonical form (fully expanded) before being placed in
2418 $sender_host_address.
2419
242024. Updated eximstats to version 1.33
2421
ea3a6f44
NM
242225. Include certificate and key file names in error message when GnuTLS fails
2423 to set them up, because the GnuTLS error message doesn't include the name
2424 of the failing file when there is a problem reading it.
bbe902f0
PH
2425
242626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2427 As per change 25.
bbe902f0 2428
ea3a6f44
NM
242927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2430 (this can affect the format of dates).
bbe902f0 2431
ea3a6f44
NM
243228. exim_tidydb, when checking for the continued existence of a message for
2433 which it has found a message-specific retry record, was not finding
2434 messages that were in split spool directories. Consequently, it was
2435 deleting retry records that should have stayed in existence.
bbe902f0
PH
2436
243729. eximstats updated to version 1.35
2438 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2439 1.35 - bugfix such that pie charts by volume are generated correctly
2440
ea3a6f44
NM
244130. The SPA authentication driver was not abandoning authentication and moving
2442 on to the next authenticator when an expansion was forced to fail,
2443 contradicting the general specification for all authenticators. Instead it
2444 was generating a temporary error. It now behaves as specified.
bbe902f0 2445
ea3a6f44
NM
244631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2447 (the order specifies the preference for clients). The order is now AES256,
2448 AES128, 3DES, ARCFOUR128.
bbe902f0 2449
ea3a6f44
NM
245031. Small patch to Sieve code - explicitly set From: when generating an
2451 autoreply.
bbe902f0 2452
ea3a6f44
NM
245332. Exim crashed if a remote delivery caused a very long error message to be
2454 recorded - for instance if somebody sent an entire SpamAssassin report back
2455 as a large number of 550 error lines. This bug was coincidentally fixed by
2456 increasing the size of one of Exim's internal buffers (big_buffer) that
2457 happened as part of the Exiscan merge. However, to be on the safe side, I
2458 have made the code more robust (and fixed the comments that describe what
2459 is going on).
bbe902f0 2460
ea3a6f44
NM
246133. Some experimental protocols are using DNS PTR records for new purposes. The
2462 keys for these records are domain names, not reversed IP addresses. The
2463 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2464 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2465 CAN-2005-0021
2466
ea3a6f44
NM
246734. The host_aton() function is supposed to be passed a string that is known
2468 to be a valid IP address. However, in the case of IPv6 addresses, it was
2469 not checking this. This is a hostage to fortune. Exim now panics and dies
2470 if the condition is not met. A case was found where this could be provoked
2471 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2472 components; fortuitously, this particular loophole had already been fixed
2473 by change 4.50/55 or 4.44/33 above.
2474
2475 If there are any other similar loopholes, the new check in host_aton()
2476 itself should stop them being exploited. The report I received stated that
2477 data on the command line could provoke the exploit when Exim was running as
2478 exim, but did not say which command line option was involved. All I could
2479 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2480 running as the user.
bbe902f0
PH
2481 CAN-2005-0021
2482
ea3a6f44
NM
248335. There was a buffer overflow vulnerability in the SPA authentication code
2484 (which came originally from the Samba project). I have added a test to the
2485 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2486 CAN-2005-0022
2487
ea3a6f44
NM
248836. The daemon start-up calls getloadavg() while still root for those OS that
2489 need the first call to be done as root, but it missed one case: when
2490 deliver_queue_load_max is set with deliver_drop_privilege. This is
2491 necessary for the benefit of the queue runner, because there is no re-exec
2492 when deliver_drop_privilege is set.
bbe902f0 2493
ea3a6f44
NM
249437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2495 was in use, was not putting the data itself into the right store pool;
2496 consequently, it could be overwritten for a subsequent message in the same
2497 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2498 the caching.)
bbe902f0 2499
ea3a6f44
NM
250038. Sometimes the final signoff response after QUIT could fail to get
2501 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2502 < 0 before doing a fflush(). This bug looks as though it goes back to the
2503 introduction of TLS in release 3.20, but "sometimes" must have been rare
2504 because the tests only now provoked it.
bbe902f0
PH
2505
2506
495ae4b0
PH
2507Exim version 4.43
2508-----------------
2509
2510 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2511 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2512 Now it returns an integer. A number of calls were still expecting a T/F
2513 return. Fortuitously, in all cases, the tests worked in OK situations,
2514 which is the norm. However, things would have gone wrong on any write
2515 failures on the smtp file descriptor. This function is used when sending
2516 messages over SMTP and also when doing verify callouts.
2517
2518 2. When Exim is called to do synchronous delivery of a locally submitted
2519 message (the -odf or -odi options), it no longer closes stderr before doing
2520 the delivery.
2521
2522 3. Implemented the mua_wrapper option.
2523
2524 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2525
2526 5. Implemented the functions header_remove(), header_testname(),
2527 header_add_at_position(), and receive_remove_recipient(), and exported them
2528 to local_scan().
2529
2530 6. If an ACL "warn" statement specified the addition of headers, Exim already
2531 inserted X-ACL-Warn: at the start if there was no header name. However, it
2532 was not making this test for the second and subsequent header lines if
2533 there were newlines in the string. This meant that an invalid header could
2534 be inserted if Exim was badly configured.
2535
2536 7. Allow an ACL "warn" statement to add header lines at the start or after all
2537 the Received: headers, as well as at the end.
2538
2539 8. Added the rcpt_4xx retry error code.
2540
2541 9. Added postmaster_mailfrom=xxx to callout verification option.
2542
254310. Added mailfrom=xxxx to the callout verification option, for verify=
2544 header_sender only.
2545
254611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2547 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2548
254912. Inserted some casts to stop certain compilers warning when using pointer
2550 differences as field lengths or precisions in printf-type calls (mostly
2551 affecting debugging statements).
2552
255313. Added optional readline() support for -be (dynamically loaded).
2554
255514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2556 same clock tick as a message's arrival, so that its received time was the
2557 same as the "first fail" time on the retry record, and that message
2558 remained on the queue past the ultimate address timeout, every queue runner
2559 would try a delivery (because it was past the ultimate address timeout) but
2560 after another failure, the ultimate address timeout, which should have then
2561 bounced the address, did not kick in. This was a "< instead of <=" error;
2562 in most cases the first failure would have been in the next clock tick
2563 after the received time, and all would be well.
2564
256515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2566 being recognized when the domain list was tested by the match_domain
2567 condition in an expansion string.
2568
256916. Added the ${str2b64: operator.
2570
257117. Exim was always calling setrlimit() to set a large limit for the number of
2572 processes, without checking whether the existing limit was already
2573 adequate. (It did check for the limit on file descriptors.) Furthermore,
2574 errors from getrlimit() and setrlimit() were being ignored. Now they are
2575 logged to the main and panic logs, but Exim does carry on, to try to do its
2576 job under whatever limits there are.
2577
257818. Imported PCRE 5.0.
2579
258019. Trivial typo in log message " temporarily refused connection" (the leading
2581 space).
2582
258320. If the log selector return_path_on_delivery was set and an address was
2584 redirected to /dev/null, the delivery process crashed because it assumed
2585 that a return path would always be set for a "successful" delivery. In this
2586 case, the whole delivery is bypassed as an optimization, and therefore no
2587 return path is set.
2588
258921. Internal re-arrangement: the function for sending a challenge and reading
2590 a response while authentication was assuming a zero-terminated challenge
2591 string. It's now changed to take a pointer and a length, to allow for
2592 binary data in such strings.
2593
259422. Added the cyrus_sasl authenticator (code supplied by MBM).
2595
259623. Exim was not respecting finduser_retries when seeking the login of the
2597 uid under which it was called; it was always trying 10 times. (The default
2598 setting of finduser_retries is zero.) Also, it was sleeping after the final
2599 failure, which is pointless.
2600
260124. Implemented tls_on_connect_ports.
2602
260325. Implemented acl_smtp_predata.
2604
260526. If the domain in control=submission is set empty, Exim assumes that the
2606 authenticated id is a complete email address when it generates From: or
2607 Sender: header lines.
2608
260927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2610 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2611 chown and chgrp in /bin and hostname in /usr/bin.
2612
261328. Exim was keeping the "process log" file open after each use, just as it
2614 does for the main log. This opens the possibility of it remaining open for
2615 long periods when the USR1 signal hits a daemon. Occasional processlog
2616 errors were reported, that could have been caused by this. Anyway, it seems
2617 much more sensible not to leave this file open at all, so that is what now
2618 happens.
2619
262029. The long-running daemon process does not normally write to the log once it
2621 has entered its main loop, and it closes the log before doing so. This is
2622 so that log files can straightforwardly be renamed and moved. However,
2623 there are a couple of unusual error situations where the daemon does write
2624 log entries, and I had neglected to close the log afterwards.
2625
262630. The text of an SMTP error response that was received during a remote
2627 delivery was being truncated at 512 bytes. This is too short for some of
2628 the long messages that one sometimes sees. I've increased the limit to
2629 1024.
2630
263131. It is now possible to make retry rules that apply only when a message has a
2632 specific sender, in particular, an empty sender.
2633
263432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2635 it possible to be selective about when SMTP synchronization is enforced.
2636
263733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2638
263932. Implemented hosts_connection_nolog.
2640
264133. Added an ACL for QUIT.
2642
264334. Setting "delay_warning=" to disable warnings was not working; it gave a
2644 syntax error.
2645
264635. Added mailbox_size and mailbox_filecount to appendfile.
2647
264836. Added control = no_multiline_responses to ACLs.
2649
265037. There was a bug in the logic of the code that waits for the clock to tick
2651 in the case where the clock went backwards by a substantial amount such
2652 that the microsecond fraction of "now" was more than the microsecond
2653 fraction of "then" (but the whole seconds number was less).
2654
265538. Added support for the libradius Radius client library this is found on
2656 FreeBSD (previously only the radiusclient library was supported).
2657
2658
2659Exim version 4.42
2660-----------------
2661
2662 1. When certain lookups returned multiple values in the form name=value, the
2663 quoting of the values was not always being done properly. Specifically:
2664 (a) If the value started with a double quote, but contained no whitespace,
2665 it was not quoted.
2666 (b) If the value contained whitespace other than a space character (i.e.
2667 tabs or newlines or carriage returns) it was not quoted.
2668 This fix has been applied to the mysql and pgsql lookups by writing a
2669 separate quoting function and calling it from the lookup code. The fix
2670 should probably also be applied to nisplus, ibase and oracle lookups, but
2671 since I cannot test any of those, I have not disturbed their existing code.
2672
2673 2. A hit in the callout cache for a specific address caused a log line with no
2674 reason for rejecting RCPT. Now it says "Previous (cached) callout
2675 verification failure".
2676
2677 3. There was an off-by-one bug in the queryprogram router. An over-long
2678 return line was truncated at 256 instead of 255 characters, thereby
2679 overflowing its buffer with the terminating zero. As well as fixing this, I
2680 have increased the buffer size to 1024 (and made a note to document this).
2681
2682 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2683 when Exim is waiting for an SMTP response from a remote server, Exim
2684 restarts its select() call on the socket, thereby resetting its timeout.
2685 This is not a problem when such interrupts are rare. Somebody set up a cron
2686 job to run exiwhat every 2 minutes, which is less than the normal select()
2687 timeout (5 or 10 minutes). This meant that the select() timeout never
2688 kicked in because it was always reset. I have fixed this by comparing the
2689 time when an interrupt arrives with the time at the start of the first call
2690 to select(). If more time than the timeout has elapsed, the interrupt is
2691 treated as a timeout.
2692
2693 5. Some internal re-factoring in preparation for the addition of Sieve
2694 extensions (by MH). In particular, the "personal" test is moved to a
2695 separate function, and given an option for scanning Cc: and Bcc: (which is
2696 not set for Exim filters).
2697
2698 6. When Exim created an email address using the login of the caller as the
2699 local part (e.g. when creating a From: or Sender: header line), it was not
2700 quoting the local part when it contained special characters such as @.
2701
2702 7. Installed new OpenBSD configuration files.
2703
2704 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2705 try to make them clearer.
2706
2707 9. Callout options, other than the timeout value, were being ignored when
2708 verifying sender addresses in header lines. For example, when using
2709
2710 verify = header_sender/callout=no_cache
2711
2712 the cache was (incorrectly) being used.
2713
271410. Added a missing instance of ${EXE} to the exim_install script; this affects
2715 only the Cygwin environment.
2716
271711. When return_path_on_delivery was set as a log selector, if different remote
2718 addresses in the same message used different return paths and parallel
2719 remote delivery occurred, the wrong values would sometimes be logged.
2720 (Whenever a remote delivery process finished, the return path value from
2721 the most recently started remote delivery process was logged.)
2722
272312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2724 lines when AUTH and/or TLS are in use. This is the "received protocol"
2725 field. Exim used to use "asmtp" for authenticated SMTP, without any
2726 indication (in the protocol name) for TLS use. Now it follows the RFC and
2727 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2728 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2729 names appear in log lines as well as in Received: header lines.
2730
273113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2732 extensions, and comparison tests, and to fix some bugs.
2733
273414. Changes to the "personal" filter test:
2735
2736 (1) The test was buggy in that it was just doing the equivalent of
2737 "contains" tests on header lines. For example, if a user's address was
2738 anne@some.where, the "personal" test would incorrectly be true for
2739
2740 To: susanne@some.where
2741
2742 This test is now done by extracting each address from the header in turn,
2743 and checking the entire address. Other tests that are part of "personal"
2744 are now done using regular expressions (for example, to check local parts
2745 of addresses in From: header lines).
2746
2747 (2) The list of non-personal local parts in From: addresses has been
2748 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2749 taken from the Sieve specification recommendations.
2750
2751 (3) If the message contains any header line starting with "List-" it is
2752 treated as non-personal.
2753
2754 (4) The test for "circular" in the Subject: header line has been removed
2755 because it now seems ill-conceived.
2756
275715. Minor typos in src/EDITME comments corrected.
2758
275916. Installed latest exipick from John Jetmore.
2760
276117. If headers_add on a router specified a text string that was too long for
2762 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2763 of string_sprintf() is now avoided.
2764
276518. $message_body_size was not set (it was always zero) when running the DATA
2766 ACL and the local_scan() function.
2767
276819. For the "mail" command in an Exim filter, no default was being set for
2769 the once_repeat time, causing a random time value to be used if "once" was
2770 specified. (If the value happened to be <= 0, no repeat happened.) The
2771 default is now 0s, meaning "never repeat". The "vacation" command was OK
2772 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2773 (I found it when inspecting the code).
2774
277520. There is now an overall timeout for performing a callout verification. It
2776 defaults to 4 times the callout timeout, which applies to individual SMTP
2777 commands during the callout. The overall timeout applies when there is more
2778 than one host that can be tried. The timeout is checked before trying the
2779 next host. This prevents very long delays if there are a large number of
2780 hosts and all are timing out (e.g. when the network connections are timing
2781 out). The value of the overall timeout can be changed by specifying an
2782 additional sub-option for "callout", called "maxwait". For example:
2783
2784 verify = sender/callout=5s,maxwait=20s
2785
278621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2787 to the end before writing, but this should make it even safer).
2788
278922. Exim was forgetting that it had advertised PIPELINING for the second and
2790 subsequent messages on an SMTP connection. It was also not resetting its
2791 memory on STARTTLS and an internal HELO.
2792
279323. When Exim logs an SMTP synchronization error within a session, it now
2794 records whether PIPELINING has been advertised or not.
2795
279624. Added 3 instances of "(long int)" casts to time_t variables that were being
2797 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2798 rather than long int.
2799
280025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2801
280226. Added the never_mail option to autoreply.
2803
2804
2805Exim version 4.41
2806-----------------
2807
2808 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2809 crash if the getsockname() call failed; this can happen if a connection is
2810 closed very soon after it is established. The problem was simply in the
2811 order in which certain operations were done, causing Exim to try to write
2812 to the SMTP stream before it had set up the file descriptor. The bug has
2813 been fixed by making things happen in the correct order.
2814
2815
2816Exim version 4.40
2817-----------------
2818
2819 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2820 before the connection was closed, thus losing the rejection response.
2821
2822 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2823 some early Solaris releases, but causes trouble in current releases where
2824 socklen_t is defined.
2825
2826 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2827 always exist.
2828
2829 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2830 configured.
2831
2832 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2833 that releasing the top of it at the end releases what was used for sub-
2834 expansions (unless the block got too big). However, discard this block if
2835 the first thing is a variable or header, so that we can use its block when
2836 it is dynamic (useful for very large $message_headers, for example).
2837
2838 6. Lookups now cache *every* query, not just the most recent. A new, separate
2839 store pool is used for this. It can be recovered when all lookup caches are
2840 flushed. Lookups now release memory at the end of their result strings.
2841 This has involved some general refactoring of the lookup sources.
2842
2843 7. Some code has been added to the store_xxx() functions to reduce the amount
2844 of flapping under certain conditions.
2845
2846 8. log_incoming_interface used to affect only the <= reception log lines. Now
2847 it causes the local interface and port to be added to several more SMTP log
2848 lines, for example "SMTP connection from", and rejection lines.
2849
2850 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2851
285210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2853
285411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2855 could be overwritten at the end of the current message (or the start of a
2856 new message if it was set in a HELO ACL). The value is now preserved for
2857 the duration of the SMTP connection.
2858
285912. If a transport had a headers_rewrite setting, and a matching header line
2860 contained an unqualified address, that address was qualified, even if it
2861 did not match any rewriting rules. The underlying bug was that the values
2862 of the flags that permit the existence of unqualified sender and recipient
2863 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2864 non-local messages, and by -bnq for local messages) were not being
2865 preserved with the message after it was received.
2866
286713. When Exim was logging an SMTP synchronization error, it could sometimes log
2868 "next input=" as part of the text comprising the host identity instead of
2869 the correct text. The code was using the same buffer for two different
2870 strings. However, depending on which order the printing function evaluated
2871 its arguments, the bug did not always show up. Under Linux, for example, my
2872 test suite worked just fine.
2873
287414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2875 doesn't work with some older versions of Perl. It has been changed to "my",
2876 which in any case is probably the better facility to use.
2877
287815. A really picky compiler found some instances of statements for creating
2879 error messages that either had too many or two few arguments for the format
2880 string.
2881
288216. The size of the buffer for calls to the DNS resolver has been increased
2883 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2884 for addresses that have a lot of PTR records. This alleviates a problem; it
2885 does not fully solve it.
2886
288717. A dnsdb lookup for PTR records that receives more data than will fit in the
2888 buffer now truncates the list and logs the incident, which is the same
2889 action as happens when Exim is looking up a host name and its aliases.
2890 Previously in this situation something unpredictable would happen;
2891 sometimes it was "internal error: store_reset failed".
2892
289318. If a server dropped the connection unexpectedly when an Exim client was
2894 using GnuTLS and trying to read a response, the client delivery process
2895 crashed while trying to generate an error log message.
2896
289719. If a "warn" verb in an ACL added multiple headers to a message in a single
2898 string, for example:
2899
2900 warn message = H1: something\nH2: something
2901
2902 the text was added as a single header line from Exim's point of view
2903 though it ended up OK in the delivered message. However, searching for the
2904 second and subsequent header lines using $h_h2: did not work. This has been
2905 fixed. Similarly, if a system filter added multiple headers in this way,
2906 the routers could not see them.
2907
290820. Expanded the error message when iplsearch is called with an invalid key to
2909 suggest using net-iplsearch in a host list.
2910
291121. When running tests using -bh, any delays imposed by "delay" modifiers in
2912 ACLs are no longer actually imposed (and a message to that effect is
2913 output).
2914
291522. If a "gecos" field in a passwd entry contained escaped characters, in
2916 particular, if it contained a \" sequence, Exim got it wrong when building
2917 a From: or a Sender: header from that name. A second bug also caused
2918 incorrect handling when an unquoted " was present following a character
2919 that needed quoting.
2920
292123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2922 was not being matched caselessly.
2923
292424. Arranged for all hyphens in the exim.8 source to be escaped with
2925 backslashes.
2926
292725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2928 properly. Recipient callout cache records were still being keyed to include
2929 the sender, even when use_sender was set false. This led to far more
2930 callouts that were necessary. The sender is no longer included in the key
2931 when use_sender is false.
2932
293326. Added "control = submission" modifier to ACLs.
2934
293527. Added the ${base62d: operator to decode base 62 numbers.
2936
293728. dnsdb lookups can now access SRV records.
2938
293929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2940 the configuration file.
2941
294230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2943 (-v) mode. This makes the output for a verbose queue run more intelligible.
2944
294531. Added a use_postmaster feature to recipient callouts.
2946
294732. Added the $body_zerocount variable, containing the number of binary zero
2948 bytes in the message body.
2949
295033. The time of last modification of the "new" subdirectory is now used as the
2951 "mailbox time last read" when there is a quota error for a maildir
2952 delivery.
2953
295434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2955
295635. Added +ignore_unknown as a special item in host lists.
2957
295836. Code for decoding IPv6 addresses in host lists is now included, even if
2959 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2960 address was recognized as an IP address, but was then not correctly decoded
2961 into binary, causing unexpected and incorrect effects when compared with
2962 another IP address.
2963
2964
2965Exim version 4.34
2966-----------------
2967
2968 1. Very minor rewording of debugging text in manualroute to say "list of
2969 hosts" instead of "hostlist".
2970
2971 2. If verify=header_syntax was set, and a header line with an unqualified
2972 address (no domain) and a large number of spaces between the end of the
2973 name and the colon was received, the reception process suffered a buffer
2974 overflow, and (when I tested it) crashed. This was caused by some obsolete
2975 code that should have been removed. The fix is to remove it!
2976
2977 3. When running in the test harness, delay a bit after writing a bounce
2978 message to get a bit more predictability in the log output.
2979
2980 4. Added a call to search_tidyup() just before forking a reception process. In
2981 theory, someone could use a lookup in the expansion of smtp_accept_max_
2982 per_host which, without the tidyup, could leave open a database connection.
2983
2984 5. Added the variables $recipient_data and $sender_data which get set from a
2985 lookup success in an ACL "recipients" or "senders" condition, or a router
2986 "senders" option, similar to $domain_data and $local_part_data.
2987
2988 6. Moved the writing of debug_print from before to after the "senders" test
2989 for routers.
2990
2991 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2992 problems for message scanning, either using a data ACL, or using
2993 local_scan() because the Received: header was not generated till after they
2994 were called (in order to set the time as the time of reception completion).
2995 I have revised the way this works. The header is now generated after the
2996 body is received, but before the ACL or local_scan() are called. After they
2997 are run, the timestamp in the header is updated.
2998
2999
3000Exim version 4.33
3001-----------------
3002
3003 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3004 before starting a queue runner without re-exec. This happened only when
3005 deliver_drop_privilege was set or when the Exim user was set to root. The
3006 effect of the bug was that timeouts during subsequent deliveries caused
3007 crashes instead of being properly handled. The handler is now left at its
3008 default (and expected) setting.
3009
3010 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3011 message, again when deliver_drop_privilege is set or Exim is run as root.
3012 The bug described in (1) was not present in this case, but the tidying up
3013 of the other signals was missing. I have made the two cases consistent.
3014
3015 3. The ignore_target_hosts setting on a manualroute router was being ignored
3016 for hosts that were looked up using the /MX notation.
3017
3018 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3019 in domain lists.
3020
3021 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3022 operated on the sender address. After changing the $sender_address to <>
3023 for the sender address verify, Exim was re-instated it as the original
3024 (before rewriting) address, but remembering that it had rewritten it, so it
3025 wasn't rewriting it again. This bug also had the effect of breaking the
3026 sender address verification caching when the sender address was rewritten.
3027
3028 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3029 This has been changed so that if the ip literal address matches
3030 ignore_target_hosts, the router declines.
3031
3032 7. Added expansion conditions match_domain, match_address, and match_local_
3033 part (NOT match_host).
3034
3035 8. The placeholder for the Received: header didn't have a length field set.
3036
3037 9. Added code to Exim itself and to exim_lock to test for a specific race
3038 condition that could lead to file corruption when using MBX delivery. The
3039 issue is with the lockfile that is created in /tmp. If this file is removed
3040 after a process has opened it but before that process has acquired a lock,
3041 there is the potential for a second process to recreate the file and also
3042 acquire a lock. This could lead to two Exim processes writing to the file
3043 at the same time. The added code performs the same test as UW imapd; it
3044 checks after acquiring the lock that its file descriptor still refers to
3045 the same named file.
3046
304710. The buffer for building added header lines was of fixed size, 8192 bytes.
3048 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3049 when Exim is built.
3050
305111. Added the smtp_active_hostname option. If used, this will typically be made
3052 to depend on the incoming interface address. Because $interface_address is
3053 not set up until the daemon has forked a reception process, error responses
3054 that can happen earlier (such as "too many connections") no longer contain
3055 a host name.
3056
305712. If an expansion in a condition on a "warn" statement fails because a lookup
3058 defers, the "warn" statement is abandoned, and the next ACL statement is
3059 processed. Previously this caused the whole ACL to be aborted.
3060
306113. Added the iplsearch lookup type.
3062
306314. Added ident_timeout as a log selector.
3064
306515. Added tls_certificate_verified as a log selector.
3066
306716. Added a global option tls_require_ciphers (compare the smtp transport
3068 option of the same name). This controls incoming TLS connections.
3069
307017. I finally figured out how to make tls_require_ciphers do a similar thing
3071 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3072 before starting the TLS session.
3073
307418. Tabs are now shown as \t in -bP output.
3075
307619. If the log selector return_path_on_delivery was set, Exim crashed when
3077 bouncing a message because it had too many Received: header lines.
3078
307920. If two routers both had headers_remove settings, and the first one included
3080 a superfluous trailing colon, the final name in the first list and the
3081 first name in the second list were incorrectly joined into one item (with a
3082 colon in the middle).
3083
3084
3085Exim version 4.32
3086-----------------
3087
3088 1. Added -C and -D options to the exinext utility, mainly to make it easier
3089 to include in the automated testing, but these could be helpful when
3090 multiple configurations are in use.
3091
3092 2. The exinext utility was not formatting the output nicely when there was
3093 an alternate port involved in the retry record key, nor when there was a
3094 message id as well (for retries that were specific to a specific message
3095 and a specific host). It was also confused by IPv6 addresses, because of
3096 the additional colons they contain. I have fixed the IPv4 problem, and
3097 patched it up to do a reasonable job for IPv6.
3098
3099 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3100 delivery, the log line now contains "pipelined" if PIPELINING was used.
3101
3102 4. An SMTP transport process used to panic and die if the bind() call to set
3103 an explicit outgoing interface failed. This has been changed; it is now
3104 treated in the same way as a connect() failure.
3105
3106 5. A reference to $sender_host_name in the part of a conditional expansion
3107 that was being skipped was still causing a DNS lookup. This no longer
3108 occurs.
3109
3110 6. The def: expansion condition was not recognizing references to header lines
3111 that used bh_ and bheader_.
3112
3113 7. Added the _cache feature to named lists.
3114
3115 8. The code for checking quota_filecount in the appendfile transport was
3116 allowing one more file than it should have been.
3117
3118 9. For compatibility with Sendmail, the command line option
3119
3120 -prval:sval
3121
3122 is equivalent to
3123
3124 -oMr rval -oMs sval
3125
3126 and sets the incoming protocol and host name (for trusted callers). The
3127 host name and its colon can be omitted when only the protocol is to be set.
3128 Note the Exim already has two private options, -pd and -ps, that refer to
3129 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3130 "s", but I don't think that's a major issue.
3131
313210. A number of refactoring changes to the code, none of which should affect
3133 Exim's behaviour:
3134
3135 (a) The number of logging options was getting close to filling up the
3136 32-bit word that was used as a bit map. I have split them into two classes:
3137 those that are passed in the argument to log_write(), and those that are
3138 only ever tested independently outside of that function. These are now in
3139 separate 32-bit words, so there is plenty of room for expansion again.
3140 There is no change in the user interface or the logging behaviour.
3141
3142 (b) When building, for example, log lines, the code previously used a
3143 macro that called string_cat() twice, in order to add two strings. This is
3144 not really sufficiently general. Furthermore, there was one instance where
3145 it was actually wrong because one of the argument was used twice, and in
3146 one call a function was used. (As it happened, calling the function twice
3147 did not affect the overall behaviour.) The macro has been replaced by a
3148 function that can join an arbitrary number of extra strings onto a growing
3149 string.
3150
3151 (c) The code for expansion conditions now uses a table and a binary chop
3152 instead of a serial search (which was left over from when there were very
3153 few conditions). Also, it now recognizes conditions like "pam" even when
3154 the relevant support is not compiled in: a suitably worded error message is
3155 given if an attempt is made to use such a condition.
3156
315711. Added ${time_interval:xxxxx}.
3158
315912. A bug was causing one of the ddress fields not to be passed back correctly
3160 from remote delivery subprocesses. The field in question was not being
3161 subsequently used, so this caused to problems in practice.
3162
316313. Added new log selectors queue_time and deliver_time.
3164
316514. Might have fixed a bug in maildirsizefile handling that threw up
3166 "unexpected character" debug warnings, and recalculated the data
3167 unnecessarily. In any case, I expanded the warning message to give more
3168 information.
3169
317015. Added the message "Restricted characters in address" to the statements in
3171 the default ACL that block characters like @ and % in local parts.
3172
317316. Change 71 for release 4.31 proved to be much less benign that I imagined.
3174 Three changes have been made:
3175
3176 (a) There was a serious bug; a negative response to MAIL caused the whole
3177 recipient domain to be cached as invalid, thereby blocking all messages
3178 to all local parts at the same domain, from all senders. This bug has
3179 been fixed. The domain is no longer cached after a negative response to
3180 MAIL if the sender used is not empty.
3181
3182 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3183 been restored.
3184
3185 (c) A new callout option, "use_sender" has been added for people who want
3186 the modified behaviour.
3187
3188
3189Exim version 4.31
3190-----------------
3191
3192 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3193 Larry Rosenman.
3194
3195 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3196 indeed breaks things for older releases.
3197
3198 3. Added additional logging to the case where there is a problem reading data
3199 from a filter that is running in a subprocess using a pipe, in order to
3200 try to track down a specific problem.
3201
3202 4. Testing facility fudge: when running in the test harness and attempting
3203 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3204 getting "No route to host". Convert this to a timeout.
3205
3206 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3207 warning.
3208
3209 6. Some OS don't have socklen_t but use size_t instead. This affects the
3210 fifth argument of getsockopt() amongst other things. This is now
3211 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3212 can be set for individual OS. I have set it for SunOS5, OSF1, and
3213 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3214 some earlier ones do not.
3215
3216 7. Change 4.30/15 was not doing the test caselessly.
3217
3218 8. The standard form for an IPv6 address literal was being rejected by address
3219 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3220 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3221 this, as well as the form without the "IPv6" on the front (but only when
3222 address literals are enabled, of course).
3223
3224 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3225
322610. Exim crashed if a message with an empty sender address specified by -f
3227 encountered a router with an errors_to setting. This could be provoked only
3228 by a command such as
3229
3230 exim -f "" ...
3231
3232 where an empty string was supplied; "<>" did not hit this bug.
3233
323411. Installed PCRE release 4.5.
3235
323612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3237 remained set. It is now erased.
3238
323913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3240 times from message ids (which are base 36 rather than the normal 62).
3241
324214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3243 were being counted as actual protocol errors, and logged if the log
3244 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3245 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3246 and DATA following a set of rejected RCPTs do not count as protocol errors.
3247 In other words, Exim assumes they were pipelined, though this may not
3248 actually be the case. Of course, in all cases the client gets an
3249 appropriate error code.
3250
325115. If a lookup fails in an ACL condition, a message about the failure may
3252 be available; it is used if testing the ACL cannot continue, because most
3253 such messages specify what the cause of the deferral is. However, some
3254 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3255 that caused an old message to be retained and used if a later statement
3256 caused a defer, replacing the real cause of the deferral.
3257
325816. If an IP address had so many PTR records that the DNS lookup buffer
3259 was not large enough to hold them, Exim could crash while trying to process
3260 the truncated data. It now detects and logs this case.
3261
326217. Further to 4.21/58, another change has been made: if (and only if) the
3263 first line of a message (the first header line) ends with CRLF, a bare LF
3264 in a subsequent header line has a space inserted after it, so as not to
3265 terminate the header.
3266
326718. Refactoring: tidied an ugly bit of code in appendfile that copied data
3268 unnecessarily, used atoi() instead of strtol(), and didn't check the
3269 termination when getting file sizes from file names by regex.
3270
327119. Completely re-implemented the support for maildirsize files, in the light
3272 of a number of problems with the previous contributed implementation
3273 (4.30/29). In particular:
3274
3275 . If the quota is zero, the maildirsize file is maintained, but no quota is
3276 imposed.
3277
3278 . If the maildir directory does not exist, it is created before any attempt
3279 to write a maildirsize file.
3280
3281 . The quota value in the file is just a cache; if the quota is changed in
3282 the transport, the new value overrides.
3283
3284 . A regular expression is available for excluding directories from the
3285 count.
3286
328720. The autoreply transport checks the characters in options that define the
3288 message's headers; it allows continued headers, but it was checking with
3289 isspace() after an embedded newline instead of explicitly looking for a
3290 space or a tab.
3291
329221. If all the "regular" hosts to which an address was routed had passed their
3293 expiry times, and had not reached their retry times, the address was
3294 bounced, even if fallback hosts were defined. Now Exim should go on to try
3295 the fallback hosts.
3296
329722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3298 equivalent code in the SMTP transport. Some hosts send humungous responses
3299 to HELO/EHLO, more than 1024 it seems.
3300
330123. Refactoring: code in filter.c used (void *) for "any old type" but this
3302 gives compiler warnings in some environments. I've now done it "properly",
3303 using a union.
3304
330524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3306 (because of problems with the built-in one) was declared to return uschar *
3307 instead of char *, causing compiler failure.
3308
330925. Fixed a file descriptor leak when processing alias/forward files.
3310
331126. Fixed a minor format string issue in dbfn.c.
3312
331327. Typo in exim.c: ("dmbnz" for "dbmnz").
3314
331528. If a filter file refered to $h_xxx or $message_headers, and the headers
3316 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3317 become corrupted.
3318
331929. When a sender address is verified, it is cached, to save repeating the test
3320 when there is more than one recipient in a message. However, when the
3321 verification involves a callout, it is possible for different callout
3322 options to be set for different recipients. It is too complicated to keep
3323 track of this in the cache, so now Exim always runs a verification when a
3324 callout is required, relying on the callout cache for the optimization.
3325 The overhead is duplication of the address routing, but this should not be
3326 too great.
3327
332830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3329 to be verified with callout=postmaster, and the main callout worked but the
3330 postmaster check failed, the verification correctly failed. However, if a
3331 subsequent RCPT command asked for sender verification *without* the
3332 postmaster check, incorrect caching caused this verification also to fail,
3333 incorrectly.
3334
333531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3336 it was not caching the DNS options (qualify_single, search_parents) that
3337 were used when the lookup failed. A subsequent lookup with different
3338 options therefore always gave the same answer, though there were cases
3339 where it should not have. (Example: a "domains = !$mx_any" option on a
3340 dnslookup router: the "domains" option is always processed without any
3341 widening, but the router might have qualify_single set.) Now Exim uses the
3342 cached value only when the same options are set.
3343
334432. Added John Jetmore's "exipick" utility to the distribution.
3345
334633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3347 than a timeout (e.g. a certificate is required, and is not provided), an
3348 Exim server now closes the connection immediately. Previously it waited for
3349 the client to close - but if the client is SSL, it seems that they each
3350 wait for each other, leading to a delay before one of them times out.
3351
335234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3353 maintained 0.8.x compatibility because I don't think many are using it, and
3354 it is clearly obsolete.
3355
335635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3357 transport.
3358
335936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3360 client certificate was expired. A simple patch fixes this, though I don't
3361 understand the full logic of why the verify callback is called multiple
3362 times.
3363
336437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3365 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3366 which causes problems with some clients (such as the Certicom SSL Plus
3367 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3368 disables the coutermeasure allowing Eudora to connect."
3369
337038. Exim was not checking that a write() to a log file succeeded. This could
3371 lead to Bad Things if a log got too big, in particular if it hit a file
3372 size limit. Exim now panics and dies if it cannot write to a log file, just
3373 as it does if it cannot open a log file.
3374
337539. Modified OS/Makefile-Linux so that it now contains
3376
3377 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3378
3379 The two -D definitions ensure that Exim is compiled with large file
3380 support, which makes it possible to handle log files that are bigger than
3381 2^31.
3382
338340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3384 instance) a domain was checked against a named list that involved a lookup,
3385 causing $domain_data to be set, then another domain was checked against the
3386 same list, then the first domain was re-checked, the value of $domain_data
3387 after the final check could be wrong. In particular, if the second check
3388 failed, it could be set empty. This bug probably also applied to
3389 $localpart_data.
3390
339141. The strip_trailing_dot option was not being applied to the address given
3392 with the -f command-line option.
3393
339442. The code for reading a message's header from the spool was incrementing
3395 $received_count, but never initializing it. This meant that the value was
3396 incorrect (doubled) while delivering a message in the same process in which
3397 it was received. In the most common configuration of Exim, this never
3398 happens - a fresh exec is done - but it can happen when
3399 deliver_drop_privilege is set.
3400
340143. When Exim logs an SMTP synchronization error - client data sent too soon -
3402 it now includes up to 150 characters of the unexpected data in the log
3403 line.
3404
340544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3406 and building data strings. The size of both of these buffers was 10 000
3407 bytes - far larger than anybody would *ever* want, thought I. Needless to
3408 say, somebody hit the limit. I have increased the maximum line length to
3409 20 000 and the maximum data length of concatenated lines to 100 000. I have
3410 also fixed two bugs, because there was no checking on these buffers. Tsk,
3411 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3412 buffer is too small.
3413
341445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3415 lsearch lookups. Now it does.
3416
341746. When parsing a route_list item in a manualroute router, a fixed-length
3418 buffer was used for the list of hosts. I made this 1024 bytes long,
3419 thinking that nobody would ever have a list of hosts that long. Wrong.
3420 Somebody had a whole pile of complicated expansion conditions, and the
3421 string was silently truncated, leading to an expansion error. It turns out
3422 that it is easier to change to an unlimited length (owing to other changes
3423 that have happened since this code was originally written) than to build
3424 structure for giving a limitation error. The length of the item that
3425 expands into the list of hosts is now unlimited.
3426
342747. The lsearch lookup could not handle data where the length of text line was
3428 more than 4095 characters. Such lines were truncated, leading to shortened
3429 data being returned. It should now handle lines of any length.
3430
343148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3432 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3433 ACL").
3434
343549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3436 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3437 no longer happens in comment lines. A list of replacements is now placed
3438 at the head of all of the source files, except those whose only change is
3439 to replace PERL_COMMAND in the very first #! line.
3440
344150. Replaced the slow insertion sort in queue.c, for sorting the list of
3442 messages on the queue, with a bottom-up merge sort, using code contributed
3443 by Michael Haardt. This should make operations like -bp somewhat faster on
3444 large queues. It won't affect queue runners, except when queue_run_in_order
3445 is set.
3446
344751. Installed eximstats 1.31 in the distribution.
3448
344952. Added support for SRV lookups to the dnslookup router.
3450
345153. If an ACL referred to $message_body or $message_body_end, the value was not
3452 reset for any messages that followed in the same SMTP session.
3453
345454. The store-handling optimization for building very long strings was not
3455 differentiating between the different store pools. I don't think this
3456 actually made any difference in practice, but I've tidied it.
3457
345855. While running the routers to verify a sender address, $sender_address
3459 was still set to the sender address. This is wrong, because when routing to
3460 send a bounce to the sender, it would be empty. Therefore, I have changed
3461 it so that, while verifying a sender address, $sender_address is set to <>.
3462 (There is no change to what happens when verifying a recipient address.)
3463
346456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3465 target A or AAAA records (if not already returned) without resetting the
3466 qualify_single or search_parents options of the DNS resolver. These are
3467 inappropriate in this case because the targets of MX and SRV records must
3468 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3469 target that, when qualified, matched something in the local domain. These
3470 two options are now turned off when doing these lookups.
3471
347257. It seems that at least some releases of Reiserfs (which does not have the
3473 concept of a fixed number of inodes) returns zero and not -1 for the
3474 number of available inodes. This interacted badly with check_spool_inodes,
3475 which assumed that -1 was the "no such thing" setting. What I have done is
3476 to check that the total number of inodes is greater than zero before doing
3477 the test of how many are available.
3478
347958. When a "warn" ACL statement has a log_message modifier, the message is
3480 remembered, and not repeated. This is to avoid a lot of repetition when a
3481 message has many recipients that cause the same warning to be written.
3482 Howewer, Exim was preserving the list of already written lines for an
3483 entire SMTP session, which doesn't seem right. The memory is now reset if a
3484 new message is started.
3485
348659. The "rewrite" debugging flag was not showing the result of rewriting in the
3487 debugging output unless log_rewrite was also set.
3488
348960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3490 of (int)(handle) when we know that handle contains (void *)(-1).
3491
349261. The Exim daemon panic-logs an error return when it closes the incoming
3493 connection. However "connection reset by peer" seems to be common, and
3494 isn't really an error worthy of noting specially, so that particular error
3495 is no long logged.
3496
349762. When Exim is trying to find all the local interfaces, it used to panic and
3498 die if the ioctl to get the interface flags failed. However, it seems that
3499 on at least one OS (Solaris 9) it is possible to have an interface that is
3500 included in the list of interfaces, but for which you get a failure error
3501 for this call. This happens when the interface is not "plumbed" into a
3502 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3503 failure of the "get flags" call assumes that the interface is down.
3504
350563. Added a ${eval10: operator, which assumes all numbers are decimal. This
3506 makes life easier for people who are doing arithmetic on fields extracted
3507 from dates, where you often get leading zeros that should not be
3508 interpreted as octal.
3509
351064. Added qualify_domain to the redirect router, to override the global
3511 setting.
3512
351365. If a pathologically long header line contained very many addresses (the
3514 report of this problem mentioned 10 000) and each of them was rewritten,
3515 Exim could use up a very large amount of memory. (It kept on making new
3516 copies of the header line as it rewrote, and never released the old ones.)
3517 At the expense of a bit more processing, the header rewriting function has
3518 been changed so that it no longer eats memory in this way.
3519
352066. The generation of the Received: header has been moved from the time that a
3521 message starts to be received, to the time that it finishes. The timestamp
3522 in the Received: header should now be very close to that of the <= log
3523 line. There are two side-effects of this change:
3524
3525 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3526 logged header lines no longer include the local Received: line, because
3527 it has not yet been created. The same applies to a copy of the message
3528 that is returned to a non-SMTP sender when a message is rejected.
3529
3530 (b) When a filter file is tested using -bf, no additional Received: header
3531 is added to the test message. After some thought, I decided that this
3532 is a bug fix.
3533
3534 This change does not affect the value of $received_for. It is still set
3535 after address rewriting, but before local_scan() is called.
3536
353767. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3538
353968. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3540 gave an unhelpful panic error message, and a defer error. I have managed to
3541 change this behaviour so that it now rejects any supplied certificate,
3542 which seems right, as the list of acceptable certificates is empty.
3543
354469. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3545 gave an unhelpful defer error. I have not managed to make this reject any
3546 supplied certificates, but the error message it gives is "no certificate
3547 supplied", which is not helpful.
3548
354970. exigrep's output now also includes lines that are not associated with any
3550 message, but which match the given pattern. Implemented by a patch from
3551 Martin Sluka, which also tidied up the Perl a bit.
3552
355371. Recipient callout verification, like sender verification, was using <> in
3554 the MAIL FROM command. This isn't really the right thing, since the actual
3555 sender may affect whether the remote host accepts the recipient or not. I
3556 have changed it to use the actual sender in the callout; this means that
3557 the cache record is now keyed on a recipient/sender pair, not just the
3558 recipient address. There doesn't seem to be a real danger of callout loops,
3559 since a callout by the remote host to check the sender would use <>.
3560 [SEE ABOVE: changed after hitting problems.]
3561
356272. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3563 temporary errors. However, in the case of such a code being given after
3564 the end of a data transmission (i.e. after ".") Exim was failing to write
3565 a retry record for the message. (Yes, there was some broken host that was
3566 actually sending 8xx at this point.)
3567
356873. An unknown lookup type in a host list could cause Exim to panic-die when
3569 the list was checked. (An example that provoked this was putting <; in the
3570 middle of a list instead of at the start.) If this happened during a DATA
3571 ACL check, a -D file could be left lying around. This kind of configuration
3572 error no longer causes Exim to die; instead it causes a defer errror. The
3573 incident is still logged to the main and panic logs.
3574
357574. Buglet left over from Exim 3 conversion. The message "too many messages
3576 in one connection" was written to the rejectlog but not the mainlog, except
3577 when address rewriting (yes!) was being logged.
3578
357975. Added write_rejectlog option.
3580
358176. When a system filter was run not as root (that is, when system_filter_user
3582 was set), the values of the $n variables were not being returned to the
3583 main process; thus, they were not subsequently available in the $sn
3584 variables.
3585
358677. Added +return_path_on_delivery log selector.
3587
358878. A connection timeout was being treated differently from recipients deferred
3589 when testing hosts_max_try with a message that was older than the host's
3590 retry timeout. (The host should not be counted, thus allowing all hosts to
3591 be tried at least once before bouncing.) This may have been the cause of an
3592 occasionally reported bug whereby a message would remain on the queue
3593 longer than the retry timeout, but would be bounced if a delivery was
3594 forced. I say "may" because I never totally pinned down the problem;
3595 setting up timeout/retry tests is difficult. See also the next item.