Added log selector +smtp_no_mail to log when no MAIL is issued (for
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
b4ed4da0 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.452 2007/01/15 15:59:22 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
PH
6Exim version 4.67
7-----------------
8
9PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
10 issue a MAIL command.
11
12
5dd1517f
PH
13Exim version 4.66
14-----------------
15
16PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
17 fixed by 4.65/MH/01 (is this a record?) are fixed:
18
19 (i) An empty string was always treated as zero by the numeric comparison
20 operators. This behaviour has been restored.
21
22 (ii) It is documented that the numeric comparison operators always treat
23 their arguments as decimal numbers. This was broken in that numbers
24 starting with 0 were being interpreted as octal.
25
26 While fixing these problems I realized that there was another issue that
27 hadn't been noticed. Values of message_size_limit (both the global option
28 and the transport option) were treated as octal if they started with 0.
29 The documentation was vague. These values are now always treated as
30 decimal, and I will make that clear in the documentation.
31
32
93cfa765
TK
33Exim version 4.65
34-----------------
35
36TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
37 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
38 versions. (#438)
39
d6066548
MH
40MH/01 Don't check that the operands of numeric comparison operators are
41 integers when their expansion is in "skipping" mode (fixes bug
42 introduced by 4.64-PH/07).
43
4362ff0d
PH
44PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
45 child addresses, Exim now panics and dies. Previously, because the count
46 is held in a short int, deliveries were likely to be lost. As such a
47 large number of recipients for a single message is ridiculous
48 (performance will be very, very poor), I have chosen to impose a limit
49 rather than extend the field.
50
93cfa765 51
944e9e9c
TF
52Exim version 4.64
53-----------------
aa41d2de 54
21d74bd9
TK
55TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
56 leftover -K file (the existence of which was triggered by #402).
57 While we were at it, introduced process PID as part of the -K
58 filename. This should rule out race conditions when creating
59 these files.
60
61TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
62 processing considerably. Previous code took too long for large mails,
63 triggering a timeout which in turn triggers #401.
64
65TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
66 in the DK code in transports.c. sendfile() is not really portable,
67 hence the _LINUX specificness.
944e9e9c
TF
68
69TF/01 In the add_headers option to the mail command in an Exim filter,
70 there was a bug that Exim would claim a syntax error in any
71 header after the first one which had an odd number of characters
72 in the field name.
73
2b1c6e3a
PH
74PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
75 callout verification, Exim cached a "reject" for the entire domain. This
76 is correct for most verifications, but it is not correct for a recipient
77 verification with use_sender or use_postmaster set, because in that case
78 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
79 case of MAIL FROM:<> rejection from other early rejections (e.g.
80 rejection of HELO). When verifying a recipient using a non-null MAIL
81 address, the cache is ignored if it shows MAIL FROM:<> rejection.
82 Whatever the result of the callout, the value of the domain cache is
83 left unchanged (for any other kind of callout, getting as far as trying
84 RCPT means that the domain itself is ok).
85
1f872c80
PH
86PH/02 Tidied a number of unused variable and signed/unsigned warnings that
87 gcc 4.1.1 threw up.
88
89PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
90 manifest itself as EPIPE rather than ECONNECT. When tidying away a
91 session, the daemon ignores ECONNECT errors and logs others; it now
92 ignores EPIPE as well.
93
d203e649
PH
94PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
95 (quoted-printable decoding).
96
cc2ed8f7 97PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 98 later the small subsequent patch to fix an introduced bug.
f951fd57 99
ddfcd446
PH
100PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
101
d45b1de8
PH
102PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
103
104PH/08 An error is now given if message_size_limit is specified negative.
105
38a0a95f 106PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 107 to be given (somewhat) arbitrary names.
38a0a95f 108
a2405d83
JJ
109JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
110 in 4.64-PH/09.
111
112JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
113 miscellaneous code fixes
114
6ea85e9a
PH
115PH/10 Added the log_reject_target ACL modifier to specify where to log
116 rejections.
117
26da7e20
PH
118PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
119 hostname. This is wrong, because it relates to the incoming message (and
120 probably the interface on which it is arriving) and not to the outgoing
121 callout (which could be using a different interface). This has been
122 changed to use the value of the helo_data option from the smtp transport
123 instead - this is what is used when a message is actually being sent. If
124 there is no remote transport (possible with a router that sets up host
125 addresses), $smtp_active_hostname is used.
6ea85e9a 126
14aa5a05 127PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 128 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
129 (a) The code assumed that strncpy() returns a negative number on buffer
130 overflow, which isn't the case. Replaced with Exim's string_format()
131 function.
132 (b) There were several signed/unsigned issues. I just did the minimum
133 hacking in of casts. There is scope for a larger refactoring.
134 (c) The code used strcasecmp() which is not a standard C function.
135 Replaced with Exim's strcmpic() function.
136 (d) The code set only $1; it now sets $auth1 as well.
137 (e) A simple test gave the error "authentication client didn't specify
138 service in request". It would seem that Dovecot has changed its
139 interface. Fortunately there's a specification; I followed it and
140 changed what the client sends and it appears to be working now.
141
ff75a1f7
PH
142PH/13 Added $message_headers_raw to provide the headers without RFC 2047
143 decoding.
144
e6f6568e
PH
145PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
146 address A is aliased to B and C, where B exists and C does not. Without
147 -v the output is "A verified" because verification stops after a
148 successful redirection if more than one address is generated. However,
149 with -v the child addresses are also verified. Exim was outputting "A
150 failed to verify" and then showing the successful verification for C,
151 with its parentage. It now outputs "B failed to verify", showing B's
152 parentage before showing the successful verification of C.
153
d6f6e0dc
PH
154PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
155 look up a TXT record in a specific list after matching in a combined
156 list.
157
322050c2
PH
158PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
159 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
160 they consult the DNS. I had assumed they would set it the way they
161 wanted; and indeed my experiments on Linux seem to show that in some
162 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
163 To be on the safe side, however, I have now made the interface to
164 host_find_byname() similar to host_find_bydns(), with an argument
165 containing the DNS resolver options. The host_find_byname() function now
166 sets these options at its start, just as host_find_bydns() does. The smtp
167 transport options dns_qualify_single and dns_search_parents are passed to
168 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
169 of host_find_byname() use the default settings of RES_DEFNAMES
170 (qualify_single) but not RES_DNSRCH (search_parents).
171
08955dd3
PH
172PH/17 Applied (a modified version of) Nico Erfurth's patch to make
173 spool_read_header() do less string testing, by means of a preliminary
174 switch on the second character of optional "-foo" lines. (This is
175 overdue, caused by the large number of possibilities that now exist.
176 Originally there were few.) While I was there, I also converted the
177 str(n)cmp tests so they don't re-test the leading "-" and the first
178 character, in the hope this might squeeze out yet more improvement.
179
1eccaa59
PH
180PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
181 flag allowing group syntax was set by the header_syntax check but not
182 turned off, possible causing trouble later; (2) The flag was not being
183 set at all for the header_verify test, causing "group"-style headers to
184 be rejected. I have now set it in this case, and also caused header_
185 verify to ignore an empty address taken from a group. While doing this, I
186 came across some other cases where the code for allowing group syntax
187 while scanning a header line wasn't quite right (mostly, not resetting
188 the flag correctly in the right place). These bugs could have caused
189 trouble for malformed header lines. I hope it is now all correct.
190
602e59e5
PH
191PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
192 with the "reply" argument non-NULL. The code, however (which originally
193 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
194 but it didn't always do it. This confused somebody who was copying the
195 code for some other use. I have removed all the tests.
196
411ef850
PH
197PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
198 feature that was used to support insecure browsers during the U.S. crypto
199 embargo. It requires special client support, and Exim is probably the
200 only MTA that supported it -- and would never use it because real RSA is
201 always available. This code has been removed, because it had the bad
202 effect of slowing Exim down by computing (never used) parameters for the
203 RSA_EXPORT functionality.
204
7befa435
PH
205PH/21 On the advice of Timo Sirainen, added a check to the dovecot
206 authenticator to fail if there's a tab character in the incoming data
207 (there should never be unless someone is messing about, as it's supposed
208 to be base64-encoded). Also added, on Timo's advice, the "secured" option
209 if the connection is using TLS or if the remote IP is the same as the
210 local IP, and the "valid-client-cert option" if a client certificate has
211 been verified.
212
48da4259 213PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
214 authenticators. This can be used for authorization after authentication
215 succeeds. (In the case of plaintext, it servers for both authentication
216 and authorization.)
217
48da4259
PH
218PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
219 if any retry times were supplied.
220
d1d5595c
PH
221PH/24 Exim crashed if verify=helo was activated during an incoming -bs
222 connection, where there is no client IP address to check. In this
223 situation, the verify now always succeeds.
224
0ef732d9
PH
225PH/25 Applied John Jetmore's -Mset patch.
226
328895cc
PH
227PH/26 Added -bem to be like -Mset, but loading a message from a file.
228
fd700877
PH
229PH/27 In a string expansion for a processed (not raw) header when multiple
230 headers of the same name were present, leading whitespace was being
231 removed from all of them, but trailing whitespace was being removed only
232 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
233 before concatenation. Completely empty headers in a concatenation (as
234 before) are ignored.
fd700877 235
8dce1a6f
PH
236PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
237 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
238
17af4a17
PH
239PH/29 [Removed. This was a change that I later backed out, and forgot to
240 correct the ChangeLog entry (that I had efficiently created) before
241 committing the later change.]
f6c332bd
PH
242
243PH/30 Exim was sometimes attempting to deliver messages that had suffered
244 address errors (4xx response to RCPT) over the same connection as other
245 messages routed to the same hosts. Such deliveries are always "forced",
246 so retry times are not inspected. This resulted in far too many retries
247 for the affected addresses. The effect occurred only when there were more
248 hosts than the hosts_max_try setting in the smtp transport when it had
249 the 4xx errors. Those hosts that it had tried were not added to the list
250 of hosts for which the message was waiting, so if all were tried, there
251 was no problem. Two fixes have been applied:
252
253 (i) If there are any address or message errors in an SMTP delivery, none
254 of the hosts (tried or untried) are now added to the list of hosts
255 for which the message is waiting, so the message should not be a
256 candidate for sending over the same connection that was used for a
257 successful delivery of some other message. This seems entirely
258 reasonable: after all the message is NOT "waiting for some host".
259 This is so "obvious" that I'm not sure why it wasn't done
260 previously. Hope I haven't missed anything, but it can't do any
261 harm, as the worst effect is to miss an optimization.
262
263 (ii) If, despite (i), such a delivery is accidentally attempted, the
264 routing retry time is respected, so at least it doesn't keep
265 hammering the server.
266
c1114884
PH
267PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
268 in ${readsocket because some servers need this prod.
269
7a0743eb
PH
270PH/32 Added some extra debug output when updating a wait-xxx database.
271
0d85fa3f
PH
272PH/33 The hint "could be header name not terminated by colon", which has been
273 given for certain expansion errors for a long time, was not being given
274 for the ${if def:h_colon_omitted{... case.
275
1bf43b78
PH
276PH/34 The spec says: "With one important exception, whenever a domain list is
277 being scanned, $domain contains the subject domain." There was at least
278 one case where this was not true.
279
520de300
PH
280PH/35 The error "getsockname() failed: connection reset by peer" was being
281 written to the panic log as well as the main log, but it isn't really
282 panic-worthy as it just means the connection died rather early on. I have
283 removed the panic log writing for the ECONNRESET error when getsockname()
284 fails.
285
48c7f9e2
PH
286PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
287 runs only) independently of the message's sender address. This meant
288 that, if the 4xx error was in fact related to the sender, a different
289 message to the same recipient with a different sender could confuse
290 things. In particualar, this can happen when sending to a greylisting
291 server, but other circumstances could also provoke similar problems.
292 I have changed the default so that the retry time for these errors is now
293 based a combination of the sender and recipient addresses. This change
294 can be overridden by setting address_retry_include_sender=false in the
295 smtp transport.
296
99ea1c86
PH
297PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
298 remote server are returned as part of bounce messages. This was not
299 happening for LMTP over a pipe (the lmtp transport), but now it is the
300 same for both kinds of LMTP.
301
a2042e78
PH
302PH/38 Despite being documented as not happening, Exim was rewriting addresses
303 in header lines that were in fact CNAMEs. This is no longer the case.
304
4fbcfc2e
PH
305PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
306 and queue runs started by the daemon processed all messages. This has
307 been fixed so that -R and -S can now usefully be given with -q<time>.
308
aa41d2de
PH
309PH/40 Import PCRE release 6.7 (fixes some bugs).
310
af561417
PH
311PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
312
3cc66b45
PH
313PH/42 Give an error if -q is specified more than once.
314
194cc0e4
PH
315PH/43 Renamed the variables $interface_address and $interface_port as
316 $received_ip_address and $received_port, to make it clear that these
317 values apply to message reception, and not to the outgoing interface when
318 a message is delivered. (The old names remain recognized, of course.)
319
a401ddaa
PH
320PH/44 There was no timeout on the connect() call when using a Unix domain
321 socket in the ${readsocket expansion. There now is.
322
4e88a19f
PH
323PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
324 be meaningful with "accept".
325
d7d7b289
SC
326SC/01 Eximstats V1.43
327 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
328
329SC/02 Eximstats V1.44
330 Use a glob alias rather than an array ref in the generated
331 parser. This improves both readability and performance.
332
333SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
334 Collect SpamAssassin and rejection statistics.
335 Don't display local sender or destination tables unless
336 there is data to show.
337 Added average volumes into the top table text output.
338
339SC/04 Eximstats V1.46
340 Collect data on the number of addresses (recipients)
341 as well as the number of messages.
342
343SC/05 Eximstats V1.47
344 Added 'Message too big' to the list of mail rejection
345 reasons (thanks to Marco Gaiarin).
346
347SC/06 Eximstats V1.48
348 Mainlog lines which have GMT offsets and are too short to
349 have a flag are now skipped.
350
351SC/07 Eximstats V1.49 (Alain Williams)
352 Added the -emptyok flag.
353
354SC/08 Eximstats V1.50
355 Fixes for obtaining the IP address from reject messages.
356
0ea2a468
JJ
357JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
358 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
359 whitesspace changes from 4.64-PH/27
360
361JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
362 match 4.64-PH/13
363
364JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
365 are found, allow negative numbers in numeric criteria)
366
367JJ/06 exipick.20061117.2, added new $message_body_missing variable
368
369JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
370 to match changes made in 4.64-PH/43
371
8a10f5a4
PH
372PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
373
30e18802
PH
374PH/47 Put in an explicit test for a DNS lookup of an address record where the
375 "domain" is actually an IP address, and force a failure. This locks out
376 those revolvers/nameservers that support "A-for-A" lookups, in
377 contravention of the specifications.
378
55728a4f
PH
379PH/48 When a host name was looked up from an IP address, and the subsequent
380 forward lookup of the name timed out, the host name was left in
381 $sender_host_name, contrary to the specification.
d7d7b289 382
d7837193
PH
383PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
384 restricted to single-key lookups, Exim was not diagnosing an error if
385 * or *@ was used with a query-style lookup.
386
87054a31
PH
387PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
388
ea2c01d2
MH
389MH/01 local_scan ABI version incremented to 1.1. It should have been updated
390 long ago, but noone interested enough thought of it. Let's just say that
391 the "1.1" means that there are some new functions that weren't there at
392 some point in the past.
393
e4fa6968
PH
394PH/51 Error processing for expansion failure of helo_data from an smtp
395 transport during callout processing was broken.
396
56f5d9bd
PH
397PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
398 tested/used via the -bh/-bhc/-bs options.
399
922e1c28
PH
400PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
401 bug, fixed in subsequent PCRE releases).
402
21eb6e72
PH
403PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
404 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
405
a0540757
PH
406PH/55 Check for a ridiculously long file name in exim_dbmbuild.
407
944e9e9c 408
478be7b0
SC
409Exim version 4.63
410-----------------
411
412SC/01 Use a glob alias rather than an array ref in eximstats generated
413 parser. This improves both readability and performance.
414
415SC/02 Collect SpamAssassin and rejection statistics in eximstats.
416 Don't display local sender or destination tables in eximstats unless
417 there is data to show.
418 Added average volumes into the eximstats top table text output.
419
420SC/03 Collect data on the number of addresses (recipients) as well
421 as the number of messages in eximstats.
422
2b965a65
TF
423TF/01 Correct an error in the documentation for the redirect router. Exim
424 does (usually) call initgroups() when daemonizing.
478be7b0 425
45b91596
PH
426TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
427 with consistent privilege compared to when running as a daemon.
478be7b0 428
c59f5781
TF
429TF/03 Note in the spec that $authenticated_id is not set for local
430 submissions from trusted users.
431
90fc3069
TF
432TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
433 Thanks to Dean Brooks <dean@iglou.com> for the patch.
434
6083aca0
TF
435TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
436 by adding some example configuration directives to the default
437 configuration file. A little bit of work is required to uncomment the
438 directives and define how usernames and passwords are checked, but
439 there is now a framework to start from.
440
765b530f
PH
441PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
442 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
443 without this. I don't know how relevant this is to other LDAP libraries.
444
4e167a8c
PH
445PH/02 Add the verb name to the "unknown ACL verb" error.
446
4608d683
PH
447PH/03 Magnus Holmgren's patch for filter_prepend_home.
448
b8dc3e4a
PH
449PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
450
5418e93b
PH
451PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
452 directory not expanded when it should be if an expanded home directory
453 was set for the address (which is overridden by the transport).
454
b4a9bda2
PH
455PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
456 libradius.
457
45b91596
PH
458PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
459 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
460 because it is too late at that time, and has no effect.
461
5547e2c5
PH
462PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
463 security issue with \' (bugzilla #107). I could not use the
464 PQescapeStringConn() function, because it needs a PGconn value as one of
465 its arguments.
466
dbcef0ea
PH
467PH/08 When testing addresses using -bt, indicate those final addresses that
468 are duplicates that would not cause an additional delivery. At least one
469 person was confused, thinking that -bt output corresponded to deliveries.
470 (Suppressing duplicates isn't a good idea as you lose the information
471 about possibly different redirections that led to the duplicates.)
472
25257489
PH
473PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
474 systems where poll() doesn't work, in particular OS X.
475
c816d124
PH
476PH/10 Added more information to debugging output for retry time not reached.
477
a9ccd69a
PH
478PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
479 operations in malware.c.
480
75fa1910
PH
481PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
482 signatures.
483
a7d7aa58
PH
484PH/13 If write_rejectlog was set false when logging was sent to syslog with
485 syslog_duplication set false, log lines that would normally be written
486 both the the main log and to the reject log were not written to syslog at
487 all.
488
42119b09
PH
489PH/14 In the default configuration, change the use of "message" in ACL warn
490 statements to "add_header".
491
41609df5
PH
492PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
493 not followed by a command (e.g. "seen endif").
494
a5bd321b
PH
495PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
496 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
497 latter.
498
e85a7ad5 499PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
500 so that it is now:
501
e85a7ad5
PH
502 ${if or { \
503 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
504 { match{$h_precedence:}{(?i)bulk|list|junk} } \
505 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
506 }{no}{yes}}
507
e85a7ad5
PH
508 The Auto-Submitted: and various List- headers are standardised, whereas I
509 don't think Precedence: ever was.
5dff5817 510
d8fe1c03
PH
511PH/18 Refactored debugging code in route_finduser() to show more information,
512 in particular, the error code if getpwnam() issues one.
513
16282d2b
PH
514PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
515 This is apparently needed in addition to the PH/07 change above to avoid
516 any possible encoding problems.
517
35d40a98
PH
518PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
519 but not after initializing Perl.
520
034d99ab
PH
521PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
522 output them only if debugging. By default they are written stderr,
523 apparently, which is not desirable.
524
6ec97b1b
PH
525PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
526 queries.
527
e22ca4ac
JJ
528JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
529 --not options
530
531JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
532
33d73e3b
PH
533PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
534 authenticated or an ident call has been made. Suppress the default
535 values for $authenticated_id and $authenticated_sender (but permit -oMai
536 and -oMas) when testing with -bh.
537
9ecb03f3
PH
538PH/24 Re-jigged the order of the tests in the default configuration so that the
539 tests for valid domains and recipients precede the DNS black list and CSA
540 tests, on the grounds that those ones are more expensive.
541
084efe8d
PH
542PH/25 Exim was not testing for a space following SMTP commands such as EHLO
543 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
544 This bug exists in every version of Exim that I still have, right back to
545 0.12.
546
366fc9f0
PH
547PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
548 However, an attempt to turn on case-sensitivity in a regex key by
549 including (?-i) didn't work because the subject string was already
550 lowercased, and the effects were non-intuitive. It turns out that a
551 one-line patch can be used to allow (?-i) to work as expected.
552
c59f5781 553
c887c79e
TF
554Exim version 4.62
555-----------------
556
557TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
558 other effects) broke the use of negated acl sub-conditions.
559
1cce3af8
PH
560PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
561 patch).
562
afb3eaaf
PH
563PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
564 "Deny" causes Exim to reject the incoming connection with a 554 error.
565 Unfortunately, if there is a major crisis, such as a disk failure,
566 tcp-wrappers gives "deny", whereas what one would like would be some
567 kind of temporary error. A kludge has been added to help with this.
568 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
569 554 error is used if errno is still zero or contains ENOENT (which occurs
570 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
571 451 error is used.
572
e173618b
PH
573PH/03 Add -lutil to the default FreeBSD LIBS setting.
574
dd16e114
PH
575PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
576 errors. Otherwise a message that provokes a temporary error (when other
577 messages do not) can cause a whole host to time out.
578
f7fd3850
PH
579PH/05 Batch deliveries by appendfile and pipe transports did not work when the
580 addresses were routed directly to files or pipes from a redirect router.
581 File deliveries just didn't batch; pipe deliveries might have suffered
582 odd errors.
583
d87df92c
PH
584PH/06 A failure to get a lock for a hints database would erroneously always say
585 "Failed to get write lock", even when it was really a read lock.
586
7e9f683d
PH
587PH/07 The appendfile transport was creating MBX lock files with a fixed mode
588 of 0600. This has been changed to use the value of the lockfile_mode
589 option (which defaults to 0600).
590
bfad5236
PH
591PH/08 Applied small patch from the Sieve maintainer.
592
01c490df
PH
593PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
594 folder from quota calculations, a direct delivery into this folder messed
595 up the contents of the maildirsize file. This was because the regex was
596 used only to exclude .Trash (or whatever) when the size of the mailbox
597 was calculated. There was no check that a delivery was happening into an
598 excluded directory. This bug has been fixed by ignoring all quota
599 processing for deliveries into excluded directories.
600
d6629cdc
PH
601PH/10 Added the maildirfolder_create_regex option to appendfile.
602
1cce3af8 603
214e2000
PH
604Exim version 4.61
605-----------------
606
607PH/01 The code for finding all the local interface addresses on a FreeBSD
608 system running IPv6 was broken. This may well have applied to all BSD
609 systems, as well as to others that have similar system calls. The broken
610 code found IPv4 interfaces correctly, but gave incorrect values for the
611 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
612 that it would not match correctly against @[] and not recognize the IPv6
613 addresses as local.
614
f9daeae0
PH
615PH/02 The ipliteral router was not recognizing addresses of the form user@
616 [ipv6:....] because it didn't know about the "ipv6:" prefix.
617
7e66e54d
PH
618PH/03 Added disable_ipv6.
619
c8ea1597
PH
620PH/04 Changed $reply_address to use the raw form of the headers instead of the
621 decoded form, because it is most often used to construct To: headers
622 lines in autoreplies, and the decoded form may well be syntactically
623 invalid. However, $reply_address has leading white space removed, and all
624 newlines turned into spaces so that the autoreply transport does not
625 grumble.
626
911f6fde
PH
627PH/05 If group was specified without a user on a router, and no group or user
628 was specified on a transport, the group from the router was ignored.
629
47ca6d6c
PH
630PH/06 Increased the number of ACL variables to 20 of each type, and arranged
631 for visible compile-time settings that can be used to change these
632 numbers, for those that want even more. Backwards compatibility with old
633 spool files has been maintained. However, going back to a previous Exim
634 release will lost any variables that are in spool files.
635
ed0e9820
PH
636PH/07 Two small changes when running in the test harness: increase delay when
637 passing a TCP/IP connection to a new process, in case the original
638 process has to generate a bounce, and remove special handling of
639 127.0.0.2 (sic), which is no longer necessary.
640
eff37e47
PH
641PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
642 be the same on different OS.
643
1921d2ea
PH
644PH/09 Moved a debug statement in filter processing to avoid a race problem when
645 testing.
646
b3f69ca8
JJ
647JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
648 whether --show-vars was specified or not
649
650JJ/02 exipick: Added support for new ACL variable spool format introduced
651 in 4.61-PH/06
652
424a1c63
PH
653PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
654 syntactically invalid From: or Reply-to: line, and a filter used this to
655 generate an autoreply, and therefore failed to obtain an address for the
656 autoreply, Exim could try to deliver to a non-existent relative file
657 name, causing unrelated and misleading errors. What now happens is that
658 it logs this as a hard delivery error, but does not attempt to create a
659 bounce message.
660
7a100415
PH
661PH/11 The exinext utility has a -C option for testing purposes, but although
662 the given file was scanned by exinext itself; it wasn't being passed on
663 when Exim was called.
664
19b9dc85
PH
665PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
666 an end-of-file indication when reading a command response.
667
309bd837
PH
668PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
669 compiled. In many other places in Exim, IPv6 addresses are always
670 recognized, so I have changed this. It also means that IPv4 domain
671 literals of the form [IPV4:n.n.n.n] are now always recognized.
672
59e82a2a
PH
673PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
674 used if the router is not running as root, for example, when verifying at
675 ACL time, or when using -bh. The debugging output from this situation was
676 non-existent - all you got was a failure to exec. I have made two
677 changes:
678
679 (a) Failures to set uid/gid, the current directory, or a process leader
680 in a subprocess such as that created by queryprogram now generate
681 suitable debugging ouput when -d is set.
682
683 (b) The queryprogram router detects when it is not running as root,
684 outputs suitable debugging information if -d is set, and then runs
685 the subprocess without attempting to change uid/gid.
686
9edc04ce
PH
687PH/15 Minor change to Makefile for building test_host (undocumented testing
688 feature).
689
1349e1e5
PH
690PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
691 additional section of a DNS packet that returns MX or SRV records.
692 Instead, it always explicitly searches for A/AAAA records. This avoids
693 major problems that occur when a DNS server includes only records of one
694 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
695 fixed another bug: if SRV records were looked up and the corresponding
696 address records were *not* found in the additional section, the port
697 values from the SRV records were lost.
698
ea49d0e1
PH
699PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
700 using the correct key (the original address) when searching the retry
701 rules in order to find which one to use for generating the retry hint.
702
064a94c9
PH
703PH/18 If quota_warn_message contains a From: header, Exim now refrains from
704 adding the default one. Similarly, if it contains a Reply-To: header, the
705 errors_reply_to option, if set, is not used.
706
727071f8
PH
707PH/19 When calculating a retry time, Exim used to measure the "time since
708 failure" by looking at the "first failed" field in the retry record. Now
709 it does not use this if it is later than than the arrival time of the
710 message. Instead it uses the arrival time. This makes for better
711 behaviour in cases where some deliveries succeed, thus re-setting the
712 "first failed" field. An example is a quota failure for a huge message
713 when small messages continue to be delivered. Without this change, the
714 "time since failure" will always be short, possible causing more frequent
715 delivery attempts for the huge message than are intended.
dd16e114 716 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 717
f78eb7c6
PH
718PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
719 $1, $2, $3) because the numerical variables can be reset during some
720 expansion items (e.g. "match"), thereby losing the authentication data.
721
21c28500
PH
722PH/21 Make -bV show the size of off_t variables so that the test suite can
723 decide whether to run tests for quotas > 2G.
724
725PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
726 mailbox_size, and mailbox_filecount in the appendfile transport. If a
727 filecount value is greater than 2G or if a quota value is greater than 2G
728 on a system where the size of off_t is not greater than 4, a panic error
729 is given.
730
1688f43b
PH
731PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
732 never match. The debug and -bh output now contains an explicit error
733 message indicating a malformed IPv4 address or mask.
734
735PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
736 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
737 PH/23 above applies.
738
9675b384
PH
739PH/25 Do not write to syslog when running in the test harness. The only
740 occasion when this arises is a failure to open the main or panic logs
741 (for which there is an explicit test).
742
6a3f1455
PH
743PH/26 Added the /no_tell option to "control=freeze".
744
dac79d3e
PH
745PH/27 If a host name lookup failed very early in a connection, for example, if
746 the IP address matched host_lookup and the reverse lookup yielded a name
747 that did not have a forward lookup, an error message of the form "no IP
748 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
749 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 750
5977a0b3
PH
751PH/28 An enabling patch from MH: add new function child_open_exim2() which
752 allows the sender and the authenticated sender to be set when
753 submitting a message from within Exim. Since child_open_exim() is
754 documented for local_scan(), the new function should be too.
755
c91535f3
PH
756PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
757 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
758 results in an empty string is now treated as unset.
759
0d46a8c8
PH
760PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
761
278c6e6c
PH
762PH/31 Added sender_verify_fail logging option.
763
2cbb4081
PH
764PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
765 needed by RFC 822 but not by RFC 2822 was commented out. I have now
766 tidied the source and removed it altogether.
767
3eef829e
PH
768PH/33 When a queue run was abandoned because the load average was too high, a
769 log line was always written; now it is written only if the queue_run log
770 selector is set. In addition, the log line for abandonment now contains
771 information about the queue run such as the pid. This is always present
772 in "start" and "stop" lines but was omitted from the "abandon" line.
773
1ab95fa6
PH
774PH/34 Omit spaces between a header name and the colon in the error message that
775 is given when verify = headers_syntax fails (if there are lots of them,
776 the message gets confusing).
777
230205fc
PH
778PH/35 Change the default for dns_check_names_pattern to allow slashes within
779 names, as there are now some PTR records that contain slashes. This check
780 is only to protect against broken name servers that fall over on strange
781 characters, so the fact that it applies to all lookups doesn't matter.
782
75e0e026
PH
783PH/36 Now that the new test suite is complete, we can remove some of the
784 special code in Exim that was needed for the old test suite. For example,
785 sorting DNS records because real resolvers return them in an arbitrary
786 order. The new test suite's fake resolver always returns records in the
787 same order.
788
789PH/37 When running in the test harness, use -odi for submitted messages (e.g.
790 bounces) except when queue_only is set, to avoid logging races between
791 the different processes.
792
145396a6
PH
793PH/38 Panic-die if .include specifies a non-absolute path.
794
3cd34f13
PH
795PH/39 A tweak to the "H" retry rule from its user.
796
11121d3d
JJ
797JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
798 a label. They prevented compilation on older perls.
799
800JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
801 a warning to be raised on newish perls.
802
803JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
804 on queue. Changes to match documented behaviour of showing count of
805 messages matching specified criteria.
806
8def5aaf
PH
807PH/40 Changed the default ident timeout from 30s to 5s.
808
929ba01c
PH
809PH/41 Added support for the use of login_cap features, on those BSD systems
810 that have them, for controlling the resources used by pipe deliveries.
811
2632889e
PH
812PH/42 The content-scanning code uses fopen() to create files in which to put
813 message data. Previously it was not paying any attention to the mode of
814 the files. Exim runs with umask(0) because the rest of the code creates
815 files with open(), and sets the required mode explicitly. Thus, these
816 files were ending up world-writeable. This was not a big issue, because,
817 being within the spool directory, they were not world-accessible. I have
818 created a function called modefopen, which takes an additional mode
819 argument. It sets umask(777), creates the file, chmods it to the required
820 mode, then resets the umask. All the relevant calls to fopen() in the
821 content scanning code have been changed to use this function.
822
944a9c55
PH
823PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
824 to 24 hours. This avoids potential overflow problems when processing G
825 and H retry rules. I suspect nobody ever tinkers with this value.
826
4a23603b
PH
827PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
828
4730f942
PH
829PH/45 When the plaintext authenticator is running as a client, the server's
830 challenges are checked to ensure they are valid base64 strings. By
831 default, the authentication attempt is cancelled if an invalid string is
832 received. Setting client_ignore_invalid_base64 true ignores these errors.
833 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
834 they are received. Thus, the responses can be made to depend on the
835 challenges. If an invalid string is ignored, an empty string is placed in
836 the variable.
837
30dba1e6
PH
838PH/46 Messages that are created by the autoreply transport now contains a
839 References: header, in accordance with RFCs 2822 and 3834.
840
382afc6b
PH
841PH/47 Added authenticated_sender_force to the smtp transport.
842
a86229cf
PH
843PH/48 The ${prvs expansion was broken on systems where time_t was long long.
844
50c99ba6
PH
845PH/49 Installed latest patch from the Sieve maintainer.
846
d35e429d
PH
847PH/50 When an Exim quota was set without a file count quota, and mailbox_size
848 was also set, the appendfile transport was unnecessarily scanning a
849 directory of message files (e.g. for maildir delivery) to find the count
850 of files (along with the size), even though it did not need this
851 information. It now does the scan only if it needs to find either the
852 size of the count of files.
853
f90d018c
PH
854PH/51 Added ${time_eval: to convert Exim time strings into seconds.
855
75def545
PH
856PH/52 Two bugs concerned with error handling when the smtp transport is
857 used in LMTP mode:
858
859 (i) Exim was not creating retry information for temporary errors given
860 for individual recipients after the DATA command when the smtp transport
861 was used in LMTP mode. This meant that they could be retried too
862 frequently, and not timed out correctly.
863
864 (ii) Exim was setting the flag that allows error details to be returned
865 for LMTP errors on RCPT commands, but not for LMTP errors for individual
866 recipients that were returned after the DATA command.
867
868PH/53 This is related to PH/52, but is more general: for any failing address,
869 when detailed error information was permitted to be returned to the
870 sender, but the error was temporary, then after the final timeout, only
871 "retry timeout exceeded" was returned. Now it returns the full error as
872 well as "retry timeout exceeded".
873
c46782ef
PH
874PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
875 do this, and (what is worse) MTAs that accept it.
876
71fafd95
PH
877PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
878 will now be deprecated.
879
2c5db4fd
PH
880PH/56 New os.c-cygwin from the Cygwin maintainer.
881
9cf6b11a
JJ
882JJ/06 exipick: added --unsorted option to allow unsorted output in all output
883 formats (previously only available in exim formats via -bpr, -bpru,
884 and -bpra. Now also available in native and exiqgrep formats)
885
886JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
887 with very large, slow to parse queues
888
889JJ/08 exipick: added ! as generic prefix to negate any criteria format
890
891JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
892
898d150f
PH
893PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
894 responses to authentication challenges, though it was showing the
895 challenges; (ii) I've removed the CR characters from the debug output for
896 SMTP output lines.
897
46218253
PH
898PH/58 Allow for the insertion of a newline as well as a space when a string
899 is turned into more than one encoded-word during RFC 2047 encoding. The
900 Sieve code now uses this.
901
e97957bc
PH
902PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
903 data_4xx, lost_connection, tls_required.
904
81e509d7
PH
905PH/60 When a VRFY deferred or FAILED, the log message rather than the user
906 message was being sent as an SMTP response.
907
3d240ff7
PH
908PH/61 Add -l and -k options to exicyclog.
909
b37c4101
PH
910PH/62 When verifying, if an address was redirected to one new address, so that
911 verification continued, and the new address failed or deferred after
912 having set something in $address_data, the value of $address_data was not
913 passed back to the ACL. This was different to the case when no
914 redirection occurred. The value is now passed back in both cases.
915
79378e0f
PH
916PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
917 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
918 use login_cap.h, so on its own it isn't the distinguishing feature. The
919 new name refers directly to the setclassresources() function.
920
e49c7bb4
PH
921PH/65 Added configuration files for NetBSD3.
922
d114ec46
PH
923PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
924
f3d7df6c
PH
925PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
926 is preferred over IPv4.
927
715ab376
PH
928PH/68 The bounce_return_message and bounce_return_body options were not being
929 honoured for bounces generated during the reception of non-SMTP messages.
930 In particular, this applied to messages rejected by the ACL. This bug has
931 been fixed. However, if bounce_return_message is true and bounce_return_
932 body is false, the headers that are returned for a non-SMTP message
933 include only those that have been read before the error was detected.
934 (In the case of an ACL rejection, they have all been read.)
935
6b31b150
PH
936PH/69 The HTML version of the specification is now built in a directory called
937 spec_html instead of spec.html, because the latter looks like a path with
938 a MIME-type, and this confuses some software.
939
940PH/70 Catch two compiler warnings in sieve.c.
941
d515a917
PH
942PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
943 function verify_get_ident() calls ip_connect() to connect a socket, but
944 if the "connect()" function timed out, ip_connect() used to close the
945 socket. However, verify_get_ident() also closes the socket later, and in
946 between Exim writes to the log, which may get opened at this point. When
947 the socket was closed in ip_connect(), the log could get the same file
948 descriptor number as the socket. This naturally causes chaos. The fix is
949 not to close the socket in ip_connect(); the socket should be closed by
950 the function that creates it. There was only one place in the code where
951 this was missing, in the iplookup router, which I don't think anybody now
952 uses, but I've fixed it anyway.
953
9b8fadde
PH
954PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
955 well as to direct DNS lookups. Otherwise the handling of names in host
956 lists is inconsistent and therefore confusing.
957
214e2000 958
5de37277
PH
959Exim version 4.60
960-----------------
961
cc38ddbf
PH
962PH/01 Two changes to the default runtime configuration:
963
964 (1) Move the checks for relay_from_hosts and authenticated clients from
965 after to before the (commented out) DNS black list checks.
966
967 (2) Add control=submission to the relay_from_hosts and authenticated
968 clients checks, on the grounds that messages accepted by these
969 statements are most likely to be submissions.
5de37277 970
72fdd6ae
PH
971PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
972
973 (1) Generate an error if the third argument for the ${prvs expansion is
974 not a single digit.
975
976 (2) Treat a missing third argument of ${prvscheck as if it were an empty
977 string.
978
979 (3) Reset the variables that are obtained from the first argument of
980 ${prvscheck and used in the second argument before leaving the code,
981 because their memory is reclaimed, so using them afterwards may do
982 silly things.
983
984 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
985 one (it's much easier than Tom thought :-).
986
987 (5) Because of (4), we can now allow for the use of $prvscheck_result
988 inside the third argument.
cb9328de 989
cb741023
PH
990PH/03 For some reason, the default setting of PATH when running a command from
991 a pipe transport was just "/usr/bin". I have changed it to
992 "/bin:/usr/bin".
993
f174f16e
PH
994PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
995 anything to be listed in the output from -bV.
b2f5a032 996
c25242d7
PH
997PH/05 When a filter generated an autoreply, the entire To: header line was
998 quoted in the delivery log line, like this:
999
1000 => >A.N.Other <ano@some.domain> <original@ddress> ...
1001
1002 This has been changed so that it extracts the operative address. There
1003 may be more than one such address. If so, they are comma-separated, like
1004 this:
1005
1006 => >ano@some.domain,ona@other.domain <original@ddress> ...
1007
82c19f95
PH
1008PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1009 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1010 not being looked up in the rDNS to get a host name, Exim was showing the
1011 IP address twice in Received: lines, even though the IP addresses were
1012 identical. For example:
1013
1014 Received: from [1.2.3.4] (helo=[1.2.3.4])
1015
1016 However, if the real host name was known, it was omitting the HELO data
1017 if it matched the actual IP address. This has been tidied up so that it
1018 doesn't show the same IP address twice.
1019
d7ffbc12
PH
1020PH/07 When both +timestamp and +memory debugging was on, the value given by
1021 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1022 called by the debug printing, thereby overwriting the timestamp buffer.
1023 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1024
9f526266
PH
1025PH/08 When the original message was included in an autoreply transport, it
1026 always said "this is a copy of the message, including all the headers",
1027 even if body_only or headers_only was set. It now gives an appropriate
1028 message.
1029
87fcc8b9
PH
1030PH/09 Applied a patch from the Sieve maintainer which:
1031
1032 o fixes some comments
1033 o adds the (disabled) notify extension core
1034 o adds some debug output for the result of if/elsif tests
1035 o points to the current vacation draft in the documentation
1036 and documents the missing references header update
1037
1038 and most important:
1039
1040 o fixes a bug in processing the envelope test (when testing
1041 multiple envelope elements, the last element determinted the
1042 result)
1043
456682f5
PH
1044PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1045 Electronic Mail") by including:
1046
1047 Auto-submitted: auto-generated
1048
1049 in the messages that it generates (bounce messages and others, such as
1050 warnings). In the case of bounce messages for non-SMTP mesages, there was
1051 also a typo: it was using "Auto_submitted" (underscore instead of
1052 hyphen). Since every message generated by Exim is necessarily in response
1053 to another message, thes have all been changed to:
1054
1055 Auto-Submitted: auto-replied
1056
1057 in accordance with these statements in the RFC:
1058
1059 The auto-replied keyword:
1060
1061 - SHOULD be used on messages sent in direct response to another
1062 message by an automatic process,
1063
1064 - MUST NOT be used on manually-generated messages,
1065
1066 - MAY be used on Delivery Status Notifications (DSNs) and Message
1067 Disposition Notifications (MDNs),
1068
1069 - MUST NOT be used on messages generated by automatic or periodic
1070 processes, except for messages which are automatic responses to
1071 other messages.
1072
3e46c1aa
PH
1073PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1074 to the default Received: header definition.
456682f5 1075
49826d12
PH
1076PH/12 Added log selector acl_warn_skipped (default on).
1077
eba0c039
PH
1078PH/13 After a successful wildlsearch lookup, discard the values of numeric
1079 variables because (a) they are in the wrong storage pool and (b) even if
1080 they were copied, it wouldn't work properly because of the caching.
1081
a0d6ba8a
PH
1082PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1083 checking when decoding. Apparently there are clients that generate
1084 overlong encoded strings. Why am I not surprised?
1085
f0917727
PH
1086PH/15 If the first argument of "${if match_address" was not empty, but did not
1087 contain an "@" character, Exim crashed. Now it writes a panic log message
1088 and treats the condition as false.
1089
096fee00
PH
1090PH/16 In autoreply, treat an empty string for "once" the same as unset.
1091
024bd3c2
PH
1092PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1093 extension "envelope-auth". The code is finished and in agreement with
1094 other implementations, but there is no documentation so far and in fact,
1095 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1096 not changing the active code.
1097
1098 Print executed "if" and "elsif" statements when debugging is used. This
1099 helps a great deal to understand what a filter does.
1100
1101 Document more things not specified clearly in RFC3028. I had all this
1102 sorted out, when out of a sudden new issues came to my mind. Oops."
1103
df199fec
PH
1104PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1105 (Bugzilla #53).
1106
d27f1df3
PH
1107PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1108 canonical form (as documented). However, after a host name lookup from
1109 the IP address, check_host() was doing a simple string comparison with
1110 addresses acquired from the DNS when checking that the found name did
1111 have the original IP as one of its addresses. Since any found IPv6
1112 addresses are likely to be in abbreviated form, the comparison could
1113 fail. Luckily, there already exists a function for doing the comparison
1114 by converting both addresses to binary, so now that is used instead of
1115 the text comparison.
1116
96776534
PH
1117PH/20 There was another similar case to PH/19, when a complete host name was
1118 given in a host list; looking up its IP address could give an abbreviated
1119 form, whereas the current host's name might or might not be abbreviated.
1120 The same fix has been applied.
1121
5de37277 1122
9a799bc0
PH
1123Exim version 4.54
1124-----------------
1125
1126PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1127 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1128 It now does.
1129
99a4b039
PH
1130PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1131 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1132
1133PH/03 Typo: missing ".o" in src/pcre/Makefile.
1134
4b233853
PH
1135PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1136 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1137 Also, for "Auto-Submitted", treat anything other than "no" as
1138 non-personal, in accordance with RFC 3834. (Previously it treated
1139 anything starting "auto-" as non-personal.)
1140
8857ccfd
PH
1141TF/01 The control=submission/name=... option had a problem with syntax
1142 errors if the name included a slash character. The /name= option
1143 now slurps the rest of the string, so it can include any characters
1144 but it must come last in the list of options (after /sender_retain
1145 or /domain=).
1146
433a2980
PH
1147PH/05 Some modifications to the interface to the fake nameserver for the new
1148 testing suite.
1149
3e46c1aa 1150
9a799bc0 1151
e3a311ba
TK
1152Exim version 4.53
1153-----------------
1154
1155TK/01 Added the "success_on_redirect" address verification option. See
1156 NewStuff for rationale and an example.
1157
13b685f9
PH
1158PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1159
395ff96d
PH
1160PH/02 Patch to exigrep to allow it to work on syslog lines.
1161
5b68f6e4
PH
1162PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1163 fread() to skip over the body file's header line, because in Cygwin the
1164 header line is locked and is inaccessible.
1165
1ab52c69
PH
1166PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1167 co-exist for some time) to make it clear that it is the Exim ID that is
1168 referenced, not the Message-ID: header line.
1169
b07e6aa3
PH
1170PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1171 string_format() function, because snprintf() does not exist on all
1172 operating systems.
1173
254e032f
PH
1174PH/06 The use of forbid_filter_existstest now also locks out the use of the
1175 ${stat: expansion item.
1176
3af76a81
PH
1177PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1178 protocol synchronization error", to keep the pedants happy.
1179
2548ba04
PH
1180PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1181 well as for IRIX systems, when gcc is being used. See the host.c source
1182 file for comments.
1183
b6c6011d
PH
1184PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1185
cf39cf57
PH
1186PH/10 Named domain lists were not working if used in a queue_smtp_domains
1187 setting.
1188
f1513293
PH
1189PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1190 transport and to the smtp transport in LMTP mode.
1191
727549a4
PH
1192TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1193
af46795e
PH
1194PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1195 run a filter in a subprocess. This could lead to confusion in subsequent
1196 lookups in the parent process. There should also be a search_tidyup() at
1197 the end of the subprocess.
1198
d7b47fd0
PH
1199PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1200 only if the host matched helo_try_verify_hosts, which caused the
1201 verification to occur when the EHLO/HELO command was issued. The ACL just
1202 tested the remembered result. Now, if a previous verification attempt has
1203 not happened, "verify = helo" does it there and then.
1204
ee744174
JJ
1205JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1206
b582ab87
PH
1207TK/03 Fix log output including CR from clamd.
1208
41a13e0a
PH
1209PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1210 exist provoked a memory error which could cause a segfault.
1211
f625cc5a
PH
1212PH/15 Installed PCRE 6.2
1213
1214PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1215
21f7af35
PH
1216PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1217 of the problem. Specifically, suggested +O2 rather than +O1 for the
1218 HP-UX compiler.
1219
31480e42
PH
1220PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1221
2d280592
PH
1222PH/20 If a delivery was routed to a non-standard port by means of an SRV
1223 record, the port was not correctly logged when the outgoing_port log
1224 selector was set (it logged the transort's default port).
1225
7cd1141b
PH
1226PH/21 Added support for host-specific ports to manualroute, queryprogram,
1227 fallback_hosts, and "hosts" in the smtp transport.
1228
1229PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1230 host errors such as "Connection refused".
1231
750af86e
PH
1232PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1233 authentication with radiusclient 0.4.9:
1234
1235 - Error returned from rc_read_config was caught wrongly
1236 - Username/password not passed on to radius server due to wrong length.
1237
1238 The presumption is that some radiusclient API changes for 4.51/PH/17
1239 were not taken care of correctly. The code is still untested by me (my
1240 Linux distribution still has 0.3.2 of radiusclient), but it was
1241 contributed by a Radius user.
1242
1243PH/24 When doing a callout, the value of $domain wasn't set correctly when
1244 expanding the "port" option of the smtp transport.
1245
4304270b
TK
1246TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1247 while reading a MIME header. Thanks to Tom Hughes for a patch.
1248
750af86e
PH
1249PH/24 Include config.h inside local_scan.h so that configuration settings are
1250 available.
1251
64ffc24f
PH
1252PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1253 that in an ACL for RCPT (for example), you can examine exactly what was
1254 received.
1255
5dd9625b
PH
1256PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1257 commands, but it was not correctly comparing the address with the actual
1258 client host address. Thus, it would show the EHLO address in Received:
1259 header lines when this was not necessary.
1260
5591031b
PH
1261PH/27 Added the % operator to ${eval:}.
1262
ba18e66a
PH
1263PH/28 Exim tries to create and chdir to its spool directory when it starts;
1264 it should be ignoring failures (because with -C, for example, it has lost
1265 privilege). It wasn't ignoring creation failures other than "already
1266 exists".
1267
9cec981f
PH
1268PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1269 -bV or -d is used.
1270
aa2b5c79
PH
1271PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1272 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1273 too many continuations, the temporary file was not being removed, and the
1274 return code was incorrect.
aa2b5c79 1275
48a53b7f
PH
1276PH/31 Missing "BOOL" in function definition in filtertest.c.
1277
1c59d63b
PH
1278PH/32 Applied Sieve patches from the maintainer.
1279
671012da
TK
1280TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1281
1509d3a8
PH
1282PH/33 Added "verify = not_blind".
1283
1284PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1285 Local/Makefile (with some defaults set). These are used in built scripts
1286 such as exicyclog, but they have never been used in the exim_install
1287 script (though there are many overriding facilities there). I have
1288 arranged that the exim_install script now takes note of these two
1289 settings.
1290
1291PH/35 Installed configuration files for Dragonfly.
1292
2fe1a124
PH
1293PH/36 When a locally submitted message by a trusted user did not contain a
1294 From: header, and the sender address was obtained from -f or from an SMTP
1295 MAIL command, and the trusted user did not use -F to supply a sender
1296 name, $originator_name was incorrectly used when constructing a From:
1297 header. Furthermore, $originator_name was used for submission mode
1298 messages from external hosts without From: headers in a similar way,
1299 which is clearly wrong.
1300
8800895a
PH
1301PH/37 Added control=suppress_local_fixups.
1302
ccfdb010
PH
1303PH/38 When log_selector = +received_sender was set, and the addition of the
1304 sender made the log line's construction buffer exactly full, or one byte
1305 less than full, an overflow happened when the terminating "\n" was
1306 subsequently added.
1307
1130bfb0
PH
1308PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1309 when the result of a list match is failure because a DNS lookup failed.
1310
ebcb507f
PH
1311PH/40 RM_COMMAND is now used in the building process.
1312
c35e155c
PH
1313PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1314 the "build-* directories that it finds.
1315
95d1f782
PH
1316PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1317 address in a domain literal was a prefix of an interface address.
1318
fd6de02e
PH
1319PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1320 when verifying a sender address, unless rewrite_headers is false.
1321
58de37c5
PH
1322PH/44 Wrote a long comment about why errors_to addresses are verified as
1323 recipients, not senders.
1324
261cf466
TF
1325TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1326 the ratelimit ACL was added.
1327
3ee512ff
PH
1328PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1329
e08c430f
PH
1330PH/46 Added extra information about PostgreSQL errors to the error string.
1331
bef5a11f
PH
1332PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1333 avoiding the need to install special zones in a real server. This is
1334 backwards compatible; if it can't find the fake resolver, it drops back.
1335 Thus, both old and new test suites can be run.
1336
7546de58
TF
1337TF/02 Added util/ratelimit.pl
1338
e5d5a95f
TF
1339TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1340 clock is set back in time.
1341
2e88a017
TF
1342TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1343 Candler <B.Candler@pobox.com>.
1344
a5f65aa4
TF
1345TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1346 OK for addresses that are the result of redirections.
1347
e7726cbf
PH
1348PH/48 A number of further additions for the benefit of the new test suite,
1349 including a fake gethostbyname() that interfaces to the fake DNS resolver
1350 (see PH/47 above).
1351
a7fdad5b
TF
1352TF/06 The fix for widen_domains has also been applied to qualify_single and
1353 search_parents which are the other dnslookup options that can cause
1354 header rewrites.
1355
6af56900
PH
1356PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1357 type ("H").
1358
0925ede6
PH
1359PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1360
66afa403
TF
1361TF/07 Exim produced the error message "an SRV record indicated no SMTP
1362 service" if it encountered an MX record with an empty target hostname.
1363 The message is now "an MX or SRV record indicated no SMTP service".
1364
0154e85a
TF
1365TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1366 if the DNS of the sending site is misconfigured. This is quite a
1367 common situation. This change restores the behaviour of treating a
1368 helo verification defer as a failure.
1369
16f12c76
PH
1370PH/51 If self=fail was set on a router, the bounce message did not include the
1371 actual error message.
1372
bbe902f0 1373
e5a9dba6
PH
1374Exim version 4.52
1375-----------------
1376
1377TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1378
22c3b60b
PH
1379PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1380 command itself ended in error, the underlying message about the transport
1381 filter timeout was being overwritten with the pipe command error. Now the
1382 underlying error message should be appended to the second error message.
1383
06a9b4b5
PH
1384TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1385
c1ac6996
PH
1386PH/02 Reduce the amount of output that "make" produces by default. Full output
1387 can still be requested.
1388
9c7a242c
PH
1389PH/03 The warning log line about a condition test deferring for a "warn" verb
1390 was being output only once per connection, rather than after each
1391 occurrence (because it was using the same function as for successful
1392 "warn" verbs). This seems wrong, so I have changed it.
1393
87ba3f5f
PH
1394TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1395 it should not have, which might have caused a crash in the right
1396 circumstances, but probably never did.
1397
1398PH/04 Installed a modified version of Tony Finch's patch to make submission
1399 mode fix the return path as well as the Sender: header line, and to
1400 add a /name= option so that you can make the user's friendly name appear
1401 in the header line.
1402
29aba418
TF
1403TF/03 Added the control = fakedefer ACL modifier.
1404
fe0dab11
TF
1405TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1406 Mark Lowes for thorough testing.
870f6ba8 1407
11d337a4
TK
1408TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1409
1410TK/03 Merged latest SRS patch from Miles Wilton.
1411
415c8f3b
PH
1412PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1413 with the definition in sysexits.h (which is #included earlier).
1414 Fortunately, Exim does not actually use EX_OK. The code used to try to
1415 preserve the sysexits.h value, by assumimg that macro definitions were
1416 scanned for macro replacements. I have been disabused of this notion,
1417 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1418
958541e9
PH
1419PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1420 in the smtp transport. When a block could not be written in a single
1421 write() function, the timeout was being re-applied to each part-write.
1422 This seems wrong - if the receiver was accepting one byte at a time it
1423 would take for ever. The timeout is now adjusted when this happens. It
1424 doesn't have to be particularly precise.
1425
c206415f
TK
1426TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1427 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1428
2a4be8f9
PH
1429PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1430 without a domain if the check to <postmaster@domain> fails.
1431
1cba11c5
SC
1432SC/01 Eximstats: added -xls and the ability to specify output files
1433 (patch written by Frank Heydlauf).
1434
1435SC/02 Eximstats: use FileHandles for outputing results.
1436
1437SC/03 Eximstats: allow any combination of xls, txt, and html output.
1438
1439SC/04 Eximstats: fixed display of large numbers with -nvr option
1440
1441SC/05 Eximstats: fixed merging of reports with empty tables.
1442
1443SC/06 Eximstats: added the -include_original_destination flag
1444
1445SC/07 Eximstats: removed tabs and trailing whitespace.
1446
1005d00e
TK
1447TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1448
1449TK/06 MBOX spool code: Add real "From " MBOX separator line
1450 so the .eml file is really in mbox format (even though
1451 most programs do not really care). Patch from Alex Miller.
1452
1453TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1454 The latter is generated from $received_to and is only set if the
1455 message has one envelope recipient. SA can use these headers,
1456 obviously out-of-the-box. Patch from Alex Miller.
1457
9b4768fa
PH
1458PH/08 The ${def test on a variable was returning false if the variable's
1459 value was "0", contrary to what the specification has always said!
1460 The result should be true unless the variable is empty.
1461
1462PH/09 The syntax error of a character other than { following "${if
1463 def:variable_name" (after optional whitespace) was not being diagnosed.
1464 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1465 accidental colon was present, for example, could give incorrect results.
1466
0d7eb84a
PH
1467PH/10 Tidied the code in a number of places where the st_size field of a stat()
1468 result is used (not including appendfile, where other changes are about
1469 to be made).
1470
1471PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1472 This involved changing a lot of size variables from int to off_t. It
1473 should work with maildirs and everything.
1474
40727bee
TK
1475TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1476 spamd dying while we are connected to it.
1477
554d2369
TF
1478TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1479 <jgh@wizmail.org>
1480
1f922db1
PH
1481PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1482 function for BDB 4.3.
1483
ef213c3b
PH
1484PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1485
8ac170f3
PH
1486PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1487 the sources for PCRE have been re-arranged and more files are now
1488 involved.
1489
b1c749bb
PH
1490PH/15 The code I had for printing potentially long long variables in PH/11
1491 above was not the best (it lost precision). The length of off_t variables
1492 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1493 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1494 to be "long long int" or "long int". This is needed for the internal
1495 formatting function string_vformat().
b1c749bb 1496
4aac9b49
PH
1497PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1498 the configuration file to be ":syslog", then the script "guesses" where
1499 the logs files are, rather than using the compiled in default. In our
1500 case the guess is not the same as the compiled default, so the script
1501 suddenly stopped working when I started to use syslog. The patch checks
1502 to see if log_file_path is "". If so, it attempts to read it from exim
1503 with no configuration file to get the compiled in version, before it
1504 falls back to the previous guessing code."
1505
294520c8
TK
1506TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1507 implementing BATV in an Exim configuration. See NewStuff for the gory
1508 details.
1509
5bd022fe
PH
1510PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1511 Makefile that are specific to HP-UX.
1512
90e9ce59
PH
1513PH/18 If the "use_postmaster" option was set for a recipient callout together
1514 with the "random" option, the postmaster address was used as the MAIL
1515 FROM address for the random test, but not for the subsequent recipient
1516 test. It is now used for both.
1517
5ea81592
PH
1518PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1519 patch removes a few documentation additions to RFC 3028, because the
1520 latest draft now contains them. It adds the new en;ascii-case comparator
1521 and a new error check for 8bit text in MIME parts. Comparator and
1522 require names are now matched exactly. I enabled the subaddress
1523 extension, but it is not well tested yet (read: it works for me)."
1524
c6c2dc1d
PH
1525PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1526 rework some of the code of TK/09 above to avoid the hardwired use of
1527 "%lld" and "long long". Replaced the call to snprintf() with a call to
1528 string_vformat().
1529
fffffe4c
PH
1530PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1531 records point to non-existent hosts", "retry timeout exceeded", and
1532 "retry time not reached for any host after a long failure period".
ca02eafb 1533
9a26b6b2
PH
1534PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1535 experimental DomainKeys support:
1536
1537 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1538 (2) On an error such as an illegally used "control", the wrong name for
1539 the control was given.
1540
1541 These problems did NOT occur unless DomainKeys support was compiled.
1542
4aee0225
PH
1543PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1544
32d668a5
PH
1545PH/24 Added ${if match_ip condition.
1546
8187c3f3
PH
1547PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1548 databases so that it will be absolutely obvious if a crash occurs in the
1549 DB library. This is a regular occurrence (often caused by mis-matched
1550 db.h files).
1551
ff790e47 1552PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1553 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1554 picked up on a user's system that detects such things. There doesn't seem
1555 to be a gcc warning option for this - only an attribute that has to be
1556 put on the function's prototype. It seems that in Fedora Core 4 they have
1557 set this on a number of new functions. No doubt there will be more in due
1558 course.
ff790e47 1559
5417f6d1
PH
1560PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1561 specify a transport. However, if an address that was verified by such a
1562 router was the subject of a callout, Exim crashed because it tried to
1563 read the rcpt_include_affixes from the non-existent transport. Now it
1564 just assumes that the setting of that option is false. This bug was
1565 introduced by 4.51/PH/31.
1566
59cf8544
PH
1567PH/28 Changed -d+all to exclude +memory, because that information is very
1568 rarely of interest, but it makes the output a lot bigger. People tend to
1569 do -d+all out of habit.
1570
e7ad8a65
PH
1571PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1572 code in os-type was giving problems when libc.so lives in lib64, like on
1573 x86_64 Fedora Core.
1574
ade42478
PH
1575PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1576 aren't the modern standard, and it seems that some systems' include files
1577 don't always have them. Exim was already checking for some of the newer
1578 ones like T_AAAA, and defining it itself. I've added checks for all the
1579 record types that Exim uses.
1580
182ad5cf
PH
1581PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1582 not automatically generating a new one, as it is supposed to. This
1583 prevented TLS from working. If the file did exist, but contained invalid
1584 data, a new version was generated, as expected. It was only the case of a
1585 non-existent file that was broken.
1586
b0d9fc80
TK
1587TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1588 with a change in libdomainkeys > 0.64.
1589
1590TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1591 from DNS. If the selector record carries the flag, it now has
1592 precedence over the domain-wide flag.
1593
1594TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1595
47c7a64a
PH
1596PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1597 the use of a port name that isn't defined in /etc/services) occurred, the
1598 message was deferred as in a normal delivery, and thus remained on the
1599 spool, instead of being failed because of the mua_wrapper setting. This
1600 is now fixed, and I tidied up some of the mua_wrapper messages at the
1601 same time.
1602
a388bce4
SC
1603SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1604 the messages in a hash of arrays rather than using individual hashes.
1605 This is a bit cleaner and results in dramatic memory savings, albeit
1606 at a slight CPU cost.
1607
1608SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1609 as requested by Marc Sherman.
1610
1611SC/10 Eximstats: added histograms for user specified patterns as requested
1612 by Marc Sherman.
1613
0793e4ed
SC
1614SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1615
c58b88df
PH
1616PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1617 fopen() in the content-scanning modules that did not already have it.
1618
e7ad8a65 1619
7982096b
PH
1620Exim version 4.51
1621-----------------
1622
1a46a8c5
PH
1623TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1624 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1625
2f079f46 1626TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1627
1628TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1629
1630PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1631 to test Sieve filters that use "vacation".
1632
1633PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1634 that changes the way the GnuTLS parameters are stored in the cache file.
1635 The new format can be generated externally. For backward compatibility,
1636 if the data in the cache doesn't make sense, Exim assumes it has read an
1637 old-format file, and it generates new data and writes a new file. This
1638 means that you can't go back to an older release without removing the
1639 file.
1640
1641PH/03 A redirect router that has both "unseen" and "one_time" set does not
1642 work if there are any delivery delays because "one_time" forces the
1643 parent to be marked "delivered", so its unseen clone is never tried
1644 again. For this reason, Exim now forbids the simultaneous setting of
1645 these two options.
1646
1647PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1648 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1649 entry if you want to know the details. The fix, however, neglected to
1650 consider the case when local delivery batching is involved. The test for
1651 "previously delivered" was not happening when checking to see if an
1652 address could be batched with a previous (undelivered) one; under
1653 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1654 address.
1a46a8c5
PH
1655
1656PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1657 in its include files, and this causes problems building Exim.
1658
1659PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1660 header_syntax) but Exim was just ignoring anything given after a slash.
1661 In particular, this caused confusion with an attempt to use "verify =
1662 reverse_host_lookup/defer_ok". An error is now given when options are
1663 supplied for verify items that do not have them. (Maybe reverse_host_
1664 lookup should have a defer_ok option, but that's a different point.)
1665
1666PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1667 defined by RFC 821) to 2048, because there were problems with some AUTH
1668 commands, and RFC 1869 says the size should be increased for extended
1669 SMTP commands that take arguments.
1670
1671PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1672 Finch).
1673
1674PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1675 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1676
49c2d5ea
PH
1677PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1678 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1679 whatever). Otherwise the password may appear in the log. Following change
1680 PH/42 below, there is no longer a chance of it appearing in a bounce
1681 message.
49c2d5ea 1682
bf759a8b
PH
1683PH/11 Installed exipick version 20050225.0 from John Jetmore.
1684
83364d30
PH
1685PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1686 of its addresses was ever tried. (Bugzilla bug #2.)
1687
7999bbd7
PH
1688PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1689 the result incorrectly in the debug output. (It correctly added a newline
1690 to what was transported.)
1691
7dbf77c9
PH
1692TF/01 Added $received_time.
1693
74e0617f
PH
1694PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1695 commented out examples of how to interface to a virus scanner and to
1696 SpamAssassin. Also added commented examples of av_scanner and
1697 spamd_address settings.
1698
2f079f46
PH
1699PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1700 and controls are allowed in which ACLs. There were a couple of minor
1701 errors. Some of the entries in the conditions table (which is a table of
1702 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1703 negation of where the condition IS allowed.
1704
8c841523
PH
1705PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1706
7766a4f0
PH
1707PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1708 header file does not have a version number, so I've had to invent a new
1709 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1710 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1711 radiusclient), but it was contributed by a Radius user.
1712
8b417f2c
PH
1713PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1714 files or directories, for OpenSSL.
1715
901f42cb
PH
1716PH/19 When an Exim process that is running as root has to create an Exim log
1717 file, it does so in a subprocess that runs as exim:exim so as to get the
1718 ownership right at creation (otherwise, other Exim processes might see
1719 the file with the wrong ownership). There was no test for failure of this
1720 fork() call, which would lead to the process getting stuck as it waited
1721 for a non-existent subprocess. Forks do occasionally fail when resources
1722 run out. I reviewed all the other calls to fork(); they all seem to check
1723 for failure.
1724
f9b9210e
PH
1725PH/20 When checking for unexpected SMTP input at connect time (before writing
1726 the banner), Exim was not dealing correctly with a non-positive return
1727 from the read() function. If the client had disconnected by this time,
1728 the result was a log entry for a synchronization error with an empty
1729 string after "input=" when read() returned zero. If read() returned -1
1730 (an event I could not check), uninitialized data bytes were printed.
1731 There were reports of junk text (parts of files, etc) appearing after
1732 "input=".
1733
54cdb463
PH
1734PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1735
cf00dad6
PH
1736PH/22 Added support for macro redefinition, and (re)definition in between
1737 driver and ACL definitions.
1738
acb1b346
PH
1739PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1740 forgetting to use the resulting value; it was using the unexpanded value.
1741
c5ddb310
PH
1742PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1743 hadn't been configured. The fix is from Juergen Kreileder, who
1744 understands it better than I do:
1745
1746 "Here's what I see happening with three configured cyrus_sasl
1747 authenticators configured (plain, login, cram-md5):
1748
1749 On startup auth_cyrus_sasl_init() gets called for each of these.
1750 This means three calls to sasl_listmech() without a specified mech_list.
1751 => SASL tests which mechs of all available mechs actually work
1752 => three warnings about OTP not working
1753 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1754
1755 With the patch, sasl_listmech() also gets called three times. But now
1756 SASL's mech_list option is set to the server_mech specified in the the
1757 authenticator. Or in other words, the answer from sasl_listmech()
1758 gets limited to just the mech you're testing for (which is different
1759 for each call.)
1760 => the return list contains just 'plain' or 'login', 'cram-md5' or
1761 nothing depending on the value of ob->server_mech.
1762
1763 I've just tested the patch: Authentication still works fine,
1764 unavailable mechs specified in the exim configuration are still
1765 caught, and the auth.log warnings about OTP are gone."
1766
31619da6
PH
1767PH/25 When debugging is enabled, the contents of the command line are added
1768 to the debugging output, even when log_selector=+arguments is not
1769 specified.
1770
bebaf0fc
PH
1771PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1772 answer is "GNU", and only if the return is "GNU/something" is the answer
1773 "Linux".
1774
475fe28a
PH
1775PH/27 $acl_verify_message is now set immediately after the failure of a
1776 verification in an ACL, and so is available in subsequent modifiers. In
1777 particular, the message can be preserved by coding like this:
1778
1779 warn !verify = sender
1780 set acl_m0 = $acl_verify_message
1781
1782 Previously, $acl_verify_message was set only while expanding "message"
1783 and "log_message" when a very denied access.
1784
7e8bec7a
PH
1785PH/28 Modified OS/os.c-Linux with
1786
1787 -#ifndef OS_LOAD_AVERAGE
1788 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1789
1790 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1791 nomenclature these days.)
1792
e4a89c47
PH
1793PH/29 Installed patch from the Sieve maintainer that adds the options
1794 sieve_useraddress and sieve_subaddress to the redirect router.
1795
5ca2a9a1
PH
1796PH/30 In these circumstances:
1797 . Two addresses routed to the same list of hosts;
1798 . First host does not offer TLS;
1799 . First host accepts first address;
1800 . First host gives temporary error to second address;
1801 . Second host offers TLS and a TLS session is established;
1802 . Second host accepts second address.
1803 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1804 and peerdn, if requested) that were in fact used only for the second
1805 address.
7e8bec7a 1806
c688b954
PH
1807PH/31 When doing a callout as part of verifying an address, Exim was not paying
1808 attention to any local part prefix or suffix that was matched by the
1809 router that accepted the address. It now behaves in the same way as it
1810 does for delivery: the affixes are removed from the local part unless
1811 rcpt_include_affixes is set on the transport.
1812
fed77020
PH
1813PH/32 Add the sender address, as F=<...>, to the log line when logging a
1814 timeout during the DATA phase of an incoming message.
1815
7fe1560f
PH
1816PH/33 Sieve envelope tests were broken for match types other than :is. I have
1817 applied a patch sanctioned by the Sieve maintainer.
c688b954 1818
ebb6e6d5
PH
1819PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1820 the uid or gid is negative. A case of a negative gid caused this to be
1821 noticed. The fix allows for either to be negative.
1822
9c4e8f60
PH
1823PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1824 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1825 overlooked.
1826
1827PH/36 The change PH/12 above was broken. Fixed it.
1828
d7174846
PH
1829PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1830 the grounds that routing the same address twice would always produce the
1831 same answer. This might have been true once, but it is certainly no
1832 longer true now. Routing a child address may depend on the previous
1833 routing that produced that child. Some complicated redirection strategies
1834 went wrong when messages had multiple recipients, and made Exim's
1835 behaviour dependent on the order in which the addresses were given.
1836
1837 I have moved the duplicate checking until after the routing is complete.
1838 Exim scans the addresses that are assigned to local and remote
1839 transports, and removes any duplicates. This means that more work will be
1840 done, as duplicates will always all be routed, but duplicates are
1841 presumably rare, so I don't expect this is of any significance.
1842
1843 For deliveries to pipes, files, and autoreplies, the duplicate checking
1844 still happens during the routing process, since they are not going to be
1845 routed further.
1846
cfe75fc3
PH
1847PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1848 It corrects a timeout issue with spamd. This is Ian's comment: "The
1849 background is that sometimes spamd either never reads data from a
1850 connection it has accepted, or it never writes response data. The exiscan
1851 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1852 blindly assumes that writes won't block so it may never time out."
1853
be22d70e
PH
1854PH/39 Allow G after quota size as well as K and M.
1855
0612b098
PH
1856PH/40 The value set for $authenticated_id in an authenticator may not contain
1857 binary zeroes or newlines because the value is written to log lines and
1858 to spool files. There was no check on this. Now the value is run through
1859 the string_printing() function so that such characters are converted to
1860 printable escape sequences.
1861
2e0c1448
PH
1862PH/41 $message_linecount is a new variable that contains the total number of
1863 lines in the message. Compare $body_linecount, which is the count for the
1864 body only.
1865
447d236c
PH
1866PH/42 Exim no longer gives details of delivery errors for specific addresses in
1867 bounce and delay warning messages, except in certain special cases, which
1868 are as follows:
1869
1870 (a) An SMTP error message from a remote host;
1871 (b) A message specified in a :fail: redirection;
1872 (c) A message specified in a "fail" command in a system filter;
1873 (d) A message specified in a FAIL return from the queryprogram router;
1874 (e) A message specified by the cannot_route_message router option.
1875
1876 In these cases only, Exim does include the error details in bounce and
1877 warning messages. There are also a few cases where bland messages such
1878 as "unrouteable address" or "local delivery error" are given.
1879
d20976dc
PH
1880PH/43 $value is now also set for the "else" part of a ${run expansion.
1881
f656d135
PH
1882PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1883 being worked on, but at least Exim now implements the latest version to
1884 play with."
1885
2e2a30b4
PH
1886PH/45 In a pipe transport, although a timeout while waiting for the pipe
1887 process to complete was treated as a delivery failure, a timeout while
1888 writing the message to the pipe was logged, but erroneously treated as a
1889 successful delivery. Such timeouts include transport filter timeouts. For
1890 consistency with the overall process timeout, these timeouts are now
1891 treated as errors, giving rise to delivery failures by default. However,
1892 there is now a new Boolean option for the pipe transport called
1893 timeout_defer, which, if set TRUE, converts the failures into defers for
1894 both kinds of timeout. A transport filter timeout is now identified in
1895 the log output.
1896
9176e9f0
PH
1897PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1898 systems where "make" and "gmake" are different, calling "gmake" at top
1899 level broke things. I've arranged for the value of $(MAKE) to be passed
1900 from the Makefile to this script so that it can call the same version of
1901 "make".
1902
7982096b 1903
bbe902f0
PH
1904A note about Exim versions 4.44 and 4.50
1905----------------------------------------
1906
1907Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1908changes of various kinds. As a consequence, a big documentation update was
1909needed. This delayed the release for rather longer than seemed good, especially
1910in the light of a couple of (minor) security issues. Therefore, the changes
1911that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1912release. So 4.44 and 4.50 are in effect two different branches that both start
1913from 4.43.
1914
1915I have left the 4.50 change log unchanged; it contains all the changes since
19164.43. The change log for 4.44 is below; many of its items are identical to
1917those for 4.50. This seems to be the most sensible way to preserve the
1918historical information.
1919
1920
f7b63901 1921Exim version 4.50
495ae4b0
PH
1922-----------------
1923
5fe762f6
PH
1924 1. Minor wording change to the doc/README.SIEVE file.
1925
139059f6 1926 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1927 computation of the current number of files was incorrect.
495ae4b0 1928
7086e875
PH
1929 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1930 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1931 place.
1932
35af9f61
PH
1933 4. Give more explanation in the error message when the command for a transport
1934 filter fails to execute.
1935
b668c215
PH
1936 5. There are several places where Exim runs a non-Exim command in a
1937 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1938 was being done only for the command run by the queryprogram router. It is
1939 now done for all such subprocesses. The other cases are: ${run, transport
1940 filters, and the commands run by the lmtp and pipe transports.
1941
a494b1e1
PH
1942 6. Added CONFIGURE_GROUP build-time option.
1943
1944 7. Some older OS have a limit of 256 on the maximum number of file
1945 descriptors. Exim was using setrlimit() to set 1000 as a large value
1946 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1947 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1948
c5fcb476
PH
1949 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1950 was an oversight, and furthermore, ever since the addition of extra
1951 controls (e.g. 4.43/32), the checks on when to allow different forms of
1952 "control" were broken. There should now be diagnostics for all cases when a
1953 control that does not make sense is encountered.
1954
69358f02
PH
1955 9. Added the /retain_sender option to "control=submission".
1956
5be20824
PH
195710. $recipients is now available in the predata ACL (oversight).
1958
eb2c0248
PH
195911. Tidy the search cache before the fork to do a delivery from a message
1960 received from the command line. Otherwise the child will trigger a lookup
1961 failure and thereby defer the delivery if it tries to use (for example) a
1962 cached ldap connection that the parent has called unbind on.
1963
2a3eea10
PH
196412. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1965 of $address_data from the recipient verification was clobbered by the
1966 sender verification.
1967
196813. The value of address_data from a sender verification is now available in
1969 $sender_address_data in subsequent conditions in the ACL statement.
1970
23c7ff99
PH
197114. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1972
4deaf07d
PH
197315. Added a new option "connect=<time>" to callout options, to set a different
1974 connection timeout.
1975
926e1192
PH
197616. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1977 was its contents. (It was OK if the option was not defined at all.)
1978
650edc6f
PH
197917. A "Completed" log line is now written for messages that are removed from
1980 the spool by the -Mrm option.
1981
2c7db3f5
PH
198218. New variables $sender_verify_failure and $recipient_verify_failure contain
1983 information about exactly what failed.
1984
3d235903
PH
198519. Added -dd to debug only the daemon process.
1986
7c7ad977
PH
198720. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1988 handles timeouts, both on the server side and network timeouts. Renamed the
1989 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1990
981756db
PH
199121. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1992 It is now set to "smtps".
1993
d4eb88df
PH
199422. $host_address is now set to the target address during the checking of
1995 ignore_target_hosts.
1996
199723. When checking ignore_target_hosts for an ipliteral router, no host name was
1998 being passed; this would have caused $sender_host_name to have been used if
1999 matching the list had actually called for a host name (not very likely,
2000 since this list is usually IP addresses). A host name is now passed as
2001 "[x.x.x.x]".
2002
7d468ab8
PH
200324. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2004 code that specifies a non-restarting handler (typically sigaction() in
2005 modern systems) in an attempt to fix a rare and obscure crash bug.
2006
200725. Narrowed the window for a race in the daemon that could cause it to ignore
2008 SIGCHLD signals. This is not a major problem, because they are used only to
2009 wake it up if nothing else does.
2010
62c0818f
PH
201126. A malformed maildirsize file could cause Exim to calculate negative values
2012 for the mailbox size or file count. Odd effects could occur as a result.
2013 The maildirsize information is now recalculated if the size or filecount
2014 end up negative.
2015
26034054
PH
201627. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2017 support for a long time. Removed HAVE_SYS_VFS_H.
2018
af66f652
PH
201928. Installed the latest version of exipick from John Jetmore.
2020
90af77f4
PH
202129. In an address list, if the pattern was not a regular expression, an empty
2022 subject address (from a bounce message) matched only if the pattern was an
2023 empty string. Non-empty patterns were not even tested. This was the wrong
2024 because it is perfectly reasonable to use an empty address as part of a
2025 database query. An empty address is now tested by patterns that are
2026 lookups. However, all the other forms of pattern expect the subject to
2027 contain a local part and a domain, and therefore, for them, an empty
2028 address still always fails if the pattern is not itself empty.
2029
d8ef3577
PH
203030. Exim went into a mad DNS loop when attempting to do a callout where the
2031 host was specified on an smtp transport, and looking it up yielded more
2032 than one IP address.
2033
5cb8cbc6
PH
203431. Re-factored the code for checking spool and log partition space into a
2035 function that finds that data and another that does the check. The former
2036 is then used to implement four new variables: $spool_space, $log_space,
2037 $spool_inodes, and $log_inodes.
2038
14702f5b
PH
203932. The RFC2047 encoding function was originally intended for short strings
2040 such as real names; it was not keeping to the 75-character limit for
2041 encoded words that the RFC imposes. It now respects the limit, and
2042 generates multiple encoded words if necessary. To be on the safe side, I
2043 have increased the buffer size for the ${rfc2047: expansion operator from
2044 1024 to 2048 bytes.
2045
063b1e99
PH
204633. It is now permitted to omit both strings after an "if" condition; if the
2047 condition is true, the result is "true". As before, when the second string
2048 is omitted, a false condition yields an empty string. This makes it less
2049 cumbersome to write custom ACL and router conditions.
2050
652e1b65
PH
205134. Failure to deliver a bounce message always caused it to be frozen, even if
2052 there was an errors_to setting on the router. The errors_to setting is now
2053 respected.
2054
6f0c9a4f
PH
205535. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2056 canonical form (fully expanded) before being placed in
2057 $sender_host_address.
2058
33397d19
PH
205936. The table in the code that translates DNS record types into text (T_A to
2060 "A" for instance) was missing entries for NS and CNAME. It is just possible
2061 that this could have caused confusion if both these types were looked up
2062 for the same domain, because the text type is used as part of Exim's
2063 per-process caching. But the chance of anyone hitting this buglet seems
2064 very small.
2065
7bb56e1f
PH
206637. The dnsdb lookup has been extended in a number of ways.
2067
2068 (1) There is a new type, "zns", which walks up the domain tree until it
2069 finds some nameserver records. It should be used with care.
2070
ea3bc19b
PH
2071 (2) There is a new type, "mxh", which is like "mx" except that it returns
2072 just the host names, not the priorities.
2073
2074 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2075 looked up. The behaviour when one of the lookups defers can be
2076 controlled by a keyword.
7bb56e1f 2077
ea3bc19b 2078 (4) It is now possible to specify the separator character for use when
7bb56e1f 2079 multiple records are returned.
33397d19 2080
0bcb2a0e
PH
208138. The dnslists ACL condition has been extended: it is now possible to supply
2082 a list of IP addresses and/or domains to be looked up in a particular DNS
2083 domain.
2084
2ac0e484
PH
208539. Added log_selector=+queue_time_overall.
2086
4e1fde53
PH
208740. When running the queue in the test harness, wait just a tad after forking a
2088 delivery process, to get repeatability of debugging output.
2089
de365ded
PH
209041. Include certificate and key file names in error message when GnuTLS fails
2091 to set them up, because the GnuTLS error message doesn't include the name
2092 of the failing file when there is a problem reading it.
2093
f05da2e8
PH
209442. Allow both -bf and -bF in the same test run.
2095
d6453af2
PH
209643. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2097
f7b63901
PH
209844. The "Exiscan patch" is now merged into the mainline Exim source.
2099
210045. Sometimes the final signoff response after QUIT could fail to get
2101 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2102 < 0 before doing a fflush(). This bug looks as though it goes back to the
2103 introduction of TLS in release 3.20, but "sometimes" must have been rare
2104 because the tests only now provoked it.
2105
a444213a
PH
210646. Reset the locale to "C" after calling embedded Perl, in case it was changed
2107 (this can affect the format of dates).
2108
0ec020ea
PH
210947. exim_tidydb, when checking for the continued existence of a message for
2110 which it has found a message-specific retry record, was not finding
2111 messages that were in split spool directories. Consequently, it was
2112 deleting retry records that should have stayed in existence.
2113
b1206957
PH
211448. Steve fixed some bugs in eximstats.
2115
211649. The SPA authentication driver was not abandoning authentication and moving
2117 on to the next authenticator when an expansion was forced to fail,
2118 contradicting the general specification for all authenticators. Instead it
2119 was generating a temporary error. It now behaves as specified.
2120
26dd5a95
PH
212150. The default ordering of permitted cipher suites for GnuTLS was pessimal
2122 (the order specifies the preference for clients). The order is now AES256,
2123 AES128, 3DES, ARCFOUR128.
2124
343b2385
PH
212551. Small patch to Sieve code - explicitly set From: when generating an
2126 autoreply.
2127
1c5466b9
PH
212852. Exim crashed if a remote delivery caused a very long error message to be
2129 recorded - for instance if somebody sent an entire SpamAssassin report back
2130 as a large number of 550 error lines. This bug was coincidentally fixed by
2131 increasing the size of one of Exim's internal buffers (big_buffer) that
2132 happened as part of the Exiscan merge. However, to be on the safe side, I
2133 have made the code more robust (and fixed the comments that describe what
2134 is going on).
2135
55ee9ee3
PH
213653. Now that there can be additional text after "Completed" in log lines (if
2137 the queue_time_overall log selector is set), a one-byte patch to exigrep
2138 was needed to allow it to recognize "Completed" as not the last thing in
2139 the line.
2140
d38f8232
PH
214154. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2142 patch that reportedly fixes this has been added. I am not expert enough to
2143 create a test for it. This is what the patch creator wrote:
2144
2145 "I found a little strange behaviour of ldap code when working with
2146 Windows 2003 AD Domain, where users was placed in more than one
2147 Organization Units. When I tried to give exim partial DN, the exit code
2148 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2149 But simultaneously result of request was absolutely normal ldap result,
2150 so I produce this patch..."
2151
3295e65b
PH
2152 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2153 REFERENCE, so I have modified the code to exclude the patch when that macro
2154 is not defined.
2155
7102e136
PH
215655. Some experimental protocols are using DNS PTR records for new purposes. The
2157 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2158 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2159 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2160 CAN-2005-0021
7102e136 2161
3ca0ba97
PH
216256. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2163
c2bcbe20
PH
216457. Double the size of the debug message buffer (to 2048) so that more of very
2165 long debug lines gets shown.
2166
18ce445d
PH
216758. The exicyclog utility now does better if the number of log files to keep
2168 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2169
1f5b4c3d
PH
217059. Two changes related to the smtp_active_hostname option:
2171
2172 (1) $smtp_active_hostname is now available as a variable.
2173 (2) The default for smtp_banner uses $smtp_active_hostname instead
2174 of $primary_hostname.
2175
b975ba52
PH
217660. The host_aton() function is supposed to be passed a string that is known
2177 to be a valid IP address. However, in the case of IPv6 addresses, it was
2178 not checking this. This is a hostage to fortune. Exim now panics and dies
2179 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2180 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2181 components; fortuitously, this particular loophole had already been fixed
2182 by change 4.50/55 above.
2183
2184 If there are any other similar loopholes, the new check in host_aton()
2185 itself should stop them being exploited. The report I received stated that
2186 data on the command line could provoke the exploit when Exim was running as
2187 exim, but did not say which command line option was involved. All I could
2188 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2189 running as the user.
ea3a6f44 2190 CAN-2005-0021
85b87bc2
PH
2191
219261. There was a buffer overflow vulnerability in the SPA authentication code
2193 (which came originally from the Samba project). I have added a test to the
2194 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2195 CAN-2005-0022
b975ba52 2196
17ffcae7
PH
219762. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2198 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2199
d95f9fdb
PH
220063. The daemon start-up calls getloadavg() while still root for those OS that
2201 need the first call to be done as root, but it missed one case: when
2202 deliver_queue_load_max is set with deliver_drop_privilege. This is
2203 necessary for the benefit of the queue runner, because there is no re-exec
2204 when deliver_drop_privilege is set.
2205
86b8287f
PH
220664. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2207 This has been fixed.
2208
60dc5e56
PH
220965. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2210 was in use, was not putting the data itself into the right store pool;
2211 consequently, it could be overwritten for a subsequent message in the same
2212 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2213 the caching.)
2214
533244af
PH
221566. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2216
a5a28604
PH
221767. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2218 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2219 the function were treating the return as a boolean value, which happened to
2220 work because 0=false and not-0=true, but is not correct code.
2221
7e634d24
PH
222268. The host_aton() function was not handling scoped IPv6 addresses (those
2223 with, for example, "%eth0" on the end) correctly.
2224
3e11c26b
PH
222569. Fixed some compiler warnings in acl.c for the bitmaps specified with
2226 negated items (that is, ~something) in unsigned ints. Some compilers
2227 apparently mutter when there is no cast.
2228
6729cf78
PH
222970. If an address verification called from an ACL failed, and did not produce a
2230 user-specific message (i.e. there was only a "system" message), nothing was
2231 put in $acl_verify_message. In this situation, it now puts the system
2232 message there.
2233
00f00ca5
PH
223471. Change 4.23/11 added synchronization checking at the start of an SMTP
2235 session; change 4.31/43 added the unwanted input to the log line - except
2236 that it did not do this in the start of session case. It now does.
2237
c9bdd01c
PH
223872. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2239 This is wrong and can cause the other end to generate a synchronization
2240 error if it is another Exim or anything else that does the synchronization
2241 check. A QUIT command is no longer sent after a timeout.
2242
d43194df
PH
224373. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2244 during host lookups.
2245
fe5b5d0b
PH
224674. The defer_ok option of callout verification was not working if it was used
2247 when verifying addresses in header lines, that is, for this case:
2248
2249 verify = header_sender/callout=defer_ok
2250
76a2d7ba
PH
225175. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2252 those file descriptors could be used for SMTP connections. If anything
2253 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2254 could be sent to the SMTP client, causing chaos. The daemon now opens
2255 stdin, stdout, and stderr to /dev/null when it puts itself into the
2256 background.
2257
225876. Arrange for output from Perl's "warn" command to be written to Exim's main
2259 log by default. The user can override this with suitable Perl magic.
2260
04f7d5b9
PH
226177. The use of log_message on a "discard" ACL verb, which is supposed to add to
2262 the log message when discard triggers, was not working for the DATA ACL or
2263 for the non-SMTP ACL.
2264
bc60667e
PH
226578. Error message wording change in sieve.c.
2266
bb6e88ff
PH
226779. If smtp_accept_max_per_host was set, the number of connections could be
2268 restricted to fewer than expected, because the daemon was trying to set up
2269 a new connection before checking whether the processes handling previous
2270 connections had finished. The check for completed processes is now done
2271 earlier. On busy systems, this bug wouldn't be noticed because something
2272 else would have woken the daemon, and it would have reaped the completed
2273 process earlier.
2274
1e70f85b
PH
227580. If a message was submitted locally by a user whose login name contained one
2276 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2277 It caused a spool format error. I have fixed the spool reading code. A
2278 related problem was that the "from" clause in the Received: line became
2279 illegal because of the space(s). It is now covered by ${quote_local_part.
2280
228181. Included the latest eximstats from Steve (adds average sizes to HTML Top
2282 tables).
2283
4e01f9d6
PH
228482. Updated OS/Makefile-AIX as per message from Mike Meredith.
2285
1ee1cef2
PH
228683. Patch from Sieve maintainer to fix unterminated string problem in
2287 "vacation" handling.
2288
6e2b4ccc
PH
228984. Some minor changes to the Linux configuration files to help with other
2290 OS variants using glibc.
2291
8e669ac1
PH
229285. One more patch for Sieve to update vacation handling to latest spec.
2293
495ae4b0 2294
bbe902f0
PH
2295----------------------------------------------------
2296See the note above about the 4.44 and 4.50 releases.
2297----------------------------------------------------
2298
2299
2300Exim version 4.44
2301-----------------
2302
2303 1. Change 4.43/35 introduced a bug that caused file counts to be
2304 incorrectly computed when quota_filecount was set in an appendfile
2305 transport
2306
2307 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2308 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2309 place.
2310
2311 3. Give more explanation in the error message when the command for a transport
2312 filter fails to execute.
2313
2314 4. There are several places where Exim runs a non-Exim command in a
2315 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2316 was being done only for the command run by the queryprogram router. It is
2317 now done for all such subprocesses. The other cases are: ${run, transport
2318 filters, and the commands run by the lmtp and pipe transports.
2319
2320 5. Some older OS have a limit of 256 on the maximum number of file
2321 descriptors. Exim was using setrlimit() to set 1000 as a large value
2322 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2323 systems. I've change it so that if it can't get 1000, it tries for 256.
2324
2325 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2326 was an oversight, and furthermore, ever since the addition of extra
2327 controls (e.g. 4.43/32), the checks on when to allow different forms of
2328 "control" were broken. There should now be diagnostics for all cases when a
2329 control that does not make sense is encountered.
2330
2331 7. $recipients is now available in the predata ACL (oversight).
2332
2333 8. Tidy the search cache before the fork to do a delivery from a message
2334 received from the command line. Otherwise the child will trigger a lookup
2335 failure and thereby defer the delivery if it tries to use (for example) a
2336 cached ldap connection that the parent has called unbind on.
2337
2338 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2339 of $address_data from the recipient verification was clobbered by the
2340 sender verification.
2341
234210. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2343 was its contents. (It was OK if the option was not defined at all.)
2344
234511. A "Completed" log line is now written for messages that are removed from
2346 the spool by the -Mrm option.
2347
234812. $host_address is now set to the target address during the checking of
2349 ignore_target_hosts.
2350
235113. When checking ignore_target_hosts for an ipliteral router, no host name was
2352 being passed; this would have caused $sender_host_name to have been used if
2353 matching the list had actually called for a host name (not very likely,
2354 since this list is usually IP addresses). A host name is now passed as
2355 "[x.x.x.x]".
2356
235714. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2358 code that specifies a non-restarting handler (typically sigaction() in
2359 modern systems) in an attempt to fix a rare and obscure crash bug.
2360
236115. Narrowed the window for a race in the daemon that could cause it to ignore
2362 SIGCHLD signals. This is not a major problem, because they are used only to
2363 wake it up if nothing else does.
2364
236516. A malformed maildirsize file could cause Exim to calculate negative values
2366 for the mailbox size or file count. Odd effects could occur as a result.
2367 The maildirsize information is now recalculated if the size or filecount
2368 end up negative.
2369
237017. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2371 support for a long time. Removed HAVE_SYS_VFS_H.
2372
ea3a6f44 237318. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2374
237519. Allow an empty sender to be matched against a lookup in an address list.
2376 Previously the only cases considered were a regular expression, or an
2377 empty pattern.
2378
237920. Exim went into a mad DNS lookup loop when doing a callout where the
2380 host was specified on the transport, if the DNS lookup yielded more than
2381 one IP address.
2382
ea3a6f44
NM
238321. The RFC2047 encoding function was originally intended for short strings
2384 such as real names; it was not keeping to the 75-character limit for
2385 encoded words that the RFC imposes. It now respects the limit, and
2386 generates multiple encoded words if necessary. To be on the safe side, I
2387 have increased the buffer size for the ${rfc2047: expansion operator from
2388 1024 to 2048 bytes.
bbe902f0 2389
ea3a6f44
NM
239022. Failure to deliver a bounce message always caused it to be frozen, even if
2391 there was an errors_to setting on the router. The errors_to setting is now
2392 respected.
bbe902f0
PH
2393
239423. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2395 canonical form (fully expanded) before being placed in
2396 $sender_host_address.
2397
239824. Updated eximstats to version 1.33
2399
ea3a6f44
NM
240025. Include certificate and key file names in error message when GnuTLS fails
2401 to set them up, because the GnuTLS error message doesn't include the name
2402 of the failing file when there is a problem reading it.
bbe902f0
PH
2403
240426. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2405 As per change 25.
bbe902f0 2406
ea3a6f44
NM
240727. Reset the locale to "C" after calling embedded Perl, in case it was changed
2408 (this can affect the format of dates).
bbe902f0 2409
ea3a6f44
NM
241028. exim_tidydb, when checking for the continued existence of a message for
2411 which it has found a message-specific retry record, was not finding
2412 messages that were in split spool directories. Consequently, it was
2413 deleting retry records that should have stayed in existence.
bbe902f0
PH
2414
241529. eximstats updated to version 1.35
2416 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2417 1.35 - bugfix such that pie charts by volume are generated correctly
2418
ea3a6f44
NM
241930. The SPA authentication driver was not abandoning authentication and moving
2420 on to the next authenticator when an expansion was forced to fail,
2421 contradicting the general specification for all authenticators. Instead it
2422 was generating a temporary error. It now behaves as specified.
bbe902f0 2423
ea3a6f44
NM
242431. The default ordering of permitted cipher suites for GnuTLS was pessimal
2425 (the order specifies the preference for clients). The order is now AES256,
2426 AES128, 3DES, ARCFOUR128.
bbe902f0 2427
ea3a6f44
NM
242831. Small patch to Sieve code - explicitly set From: when generating an
2429 autoreply.
bbe902f0 2430
ea3a6f44
NM
243132. Exim crashed if a remote delivery caused a very long error message to be
2432 recorded - for instance if somebody sent an entire SpamAssassin report back
2433 as a large number of 550 error lines. This bug was coincidentally fixed by
2434 increasing the size of one of Exim's internal buffers (big_buffer) that
2435 happened as part of the Exiscan merge. However, to be on the safe side, I
2436 have made the code more robust (and fixed the comments that describe what
2437 is going on).
bbe902f0 2438
ea3a6f44
NM
243933. Some experimental protocols are using DNS PTR records for new purposes. The
2440 keys for these records are domain names, not reversed IP addresses. The
2441 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2442 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2443 CAN-2005-0021
2444
ea3a6f44
NM
244534. The host_aton() function is supposed to be passed a string that is known
2446 to be a valid IP address. However, in the case of IPv6 addresses, it was
2447 not checking this. This is a hostage to fortune. Exim now panics and dies
2448 if the condition is not met. A case was found where this could be provoked
2449 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2450 components; fortuitously, this particular loophole had already been fixed
2451 by change 4.50/55 or 4.44/33 above.
2452
2453 If there are any other similar loopholes, the new check in host_aton()
2454 itself should stop them being exploited. The report I received stated that
2455 data on the command line could provoke the exploit when Exim was running as
2456 exim, but did not say which command line option was involved. All I could
2457 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2458 running as the user.
bbe902f0
PH
2459 CAN-2005-0021
2460
ea3a6f44
NM
246135. There was a buffer overflow vulnerability in the SPA authentication code
2462 (which came originally from the Samba project). I have added a test to the
2463 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2464 CAN-2005-0022
2465
ea3a6f44
NM
246636. The daemon start-up calls getloadavg() while still root for those OS that
2467 need the first call to be done as root, but it missed one case: when
2468 deliver_queue_load_max is set with deliver_drop_privilege. This is
2469 necessary for the benefit of the queue runner, because there is no re-exec
2470 when deliver_drop_privilege is set.
bbe902f0 2471
ea3a6f44
NM
247237. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2473 was in use, was not putting the data itself into the right store pool;
2474 consequently, it could be overwritten for a subsequent message in the same
2475 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2476 the caching.)
bbe902f0 2477
ea3a6f44
NM
247838. Sometimes the final signoff response after QUIT could fail to get
2479 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2480 < 0 before doing a fflush(). This bug looks as though it goes back to the
2481 introduction of TLS in release 3.20, but "sometimes" must have been rare
2482 because the tests only now provoked it.
bbe902f0
PH
2483
2484
495ae4b0
PH
2485Exim version 4.43
2486-----------------
2487
2488 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2489 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2490 Now it returns an integer. A number of calls were still expecting a T/F
2491 return. Fortuitously, in all cases, the tests worked in OK situations,
2492 which is the norm. However, things would have gone wrong on any write
2493 failures on the smtp file descriptor. This function is used when sending
2494 messages over SMTP and also when doing verify callouts.
2495
2496 2. When Exim is called to do synchronous delivery of a locally submitted
2497 message (the -odf or -odi options), it no longer closes stderr before doing
2498 the delivery.
2499
2500 3. Implemented the mua_wrapper option.
2501
2502 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2503
2504 5. Implemented the functions header_remove(), header_testname(),
2505 header_add_at_position(), and receive_remove_recipient(), and exported them
2506 to local_scan().
2507
2508 6. If an ACL "warn" statement specified the addition of headers, Exim already
2509 inserted X-ACL-Warn: at the start if there was no header name. However, it
2510 was not making this test for the second and subsequent header lines if
2511 there were newlines in the string. This meant that an invalid header could
2512 be inserted if Exim was badly configured.
2513
2514 7. Allow an ACL "warn" statement to add header lines at the start or after all
2515 the Received: headers, as well as at the end.
2516
2517 8. Added the rcpt_4xx retry error code.
2518
2519 9. Added postmaster_mailfrom=xxx to callout verification option.
2520
252110. Added mailfrom=xxxx to the callout verification option, for verify=
2522 header_sender only.
2523
252411. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2525 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2526
252712. Inserted some casts to stop certain compilers warning when using pointer
2528 differences as field lengths or precisions in printf-type calls (mostly
2529 affecting debugging statements).
2530
253113. Added optional readline() support for -be (dynamically loaded).
2532
253314. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2534 same clock tick as a message's arrival, so that its received time was the
2535 same as the "first fail" time on the retry record, and that message
2536 remained on the queue past the ultimate address timeout, every queue runner
2537 would try a delivery (because it was past the ultimate address timeout) but
2538 after another failure, the ultimate address timeout, which should have then
2539 bounced the address, did not kick in. This was a "< instead of <=" error;
2540 in most cases the first failure would have been in the next clock tick
2541 after the received time, and all would be well.
2542
254315. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2544 being recognized when the domain list was tested by the match_domain
2545 condition in an expansion string.
2546
254716. Added the ${str2b64: operator.
2548
254917. Exim was always calling setrlimit() to set a large limit for the number of
2550 processes, without checking whether the existing limit was already
2551 adequate. (It did check for the limit on file descriptors.) Furthermore,
2552 errors from getrlimit() and setrlimit() were being ignored. Now they are
2553 logged to the main and panic logs, but Exim does carry on, to try to do its
2554 job under whatever limits there are.
2555
255618. Imported PCRE 5.0.
2557
255819. Trivial typo in log message " temporarily refused connection" (the leading
2559 space).
2560
256120. If the log selector return_path_on_delivery was set and an address was
2562 redirected to /dev/null, the delivery process crashed because it assumed
2563 that a return path would always be set for a "successful" delivery. In this
2564 case, the whole delivery is bypassed as an optimization, and therefore no
2565 return path is set.
2566
256721. Internal re-arrangement: the function for sending a challenge and reading
2568 a response while authentication was assuming a zero-terminated challenge
2569 string. It's now changed to take a pointer and a length, to allow for
2570 binary data in such strings.
2571
257222. Added the cyrus_sasl authenticator (code supplied by MBM).
2573
257423. Exim was not respecting finduser_retries when seeking the login of the
2575 uid under which it was called; it was always trying 10 times. (The default
2576 setting of finduser_retries is zero.) Also, it was sleeping after the final
2577 failure, which is pointless.
2578
257924. Implemented tls_on_connect_ports.
2580
258125. Implemented acl_smtp_predata.
2582
258326. If the domain in control=submission is set empty, Exim assumes that the
2584 authenticated id is a complete email address when it generates From: or
2585 Sender: header lines.
2586
258727. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2588 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2589 chown and chgrp in /bin and hostname in /usr/bin.
2590
259128. Exim was keeping the "process log" file open after each use, just as it
2592 does for the main log. This opens the possibility of it remaining open for
2593 long periods when the USR1 signal hits a daemon. Occasional processlog
2594 errors were reported, that could have been caused by this. Anyway, it seems
2595 much more sensible not to leave this file open at all, so that is what now
2596 happens.
2597
259829. The long-running daemon process does not normally write to the log once it
2599 has entered its main loop, and it closes the log before doing so. This is
2600 so that log files can straightforwardly be renamed and moved. However,
2601 there are a couple of unusual error situations where the daemon does write
2602 log entries, and I had neglected to close the log afterwards.
2603
260430. The text of an SMTP error response that was received during a remote
2605 delivery was being truncated at 512 bytes. This is too short for some of
2606 the long messages that one sometimes sees. I've increased the limit to
2607 1024.
2608
260931. It is now possible to make retry rules that apply only when a message has a
2610 specific sender, in particular, an empty sender.
2611
261232. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2613 it possible to be selective about when SMTP synchronization is enforced.
2614
261533. Added "control = caseful_local_part" and "control = "caselower_local_part".
2616
261732. Implemented hosts_connection_nolog.
2618
261933. Added an ACL for QUIT.
2620
262134. Setting "delay_warning=" to disable warnings was not working; it gave a
2622 syntax error.
2623
262435. Added mailbox_size and mailbox_filecount to appendfile.
2625
262636. Added control = no_multiline_responses to ACLs.
2627
262837. There was a bug in the logic of the code that waits for the clock to tick
2629 in the case where the clock went backwards by a substantial amount such
2630 that the microsecond fraction of "now" was more than the microsecond
2631 fraction of "then" (but the whole seconds number was less).
2632
263338. Added support for the libradius Radius client library this is found on
2634 FreeBSD (previously only the radiusclient library was supported).
2635
2636
2637Exim version 4.42
2638-----------------
2639
2640 1. When certain lookups returned multiple values in the form name=value, the
2641 quoting of the values was not always being done properly. Specifically:
2642 (a) If the value started with a double quote, but contained no whitespace,
2643 it was not quoted.
2644 (b) If the value contained whitespace other than a space character (i.e.
2645 tabs or newlines or carriage returns) it was not quoted.
2646 This fix has been applied to the mysql and pgsql lookups by writing a
2647 separate quoting function and calling it from the lookup code. The fix
2648 should probably also be applied to nisplus, ibase and oracle lookups, but
2649 since I cannot test any of those, I have not disturbed their existing code.
2650
2651 2. A hit in the callout cache for a specific address caused a log line with no
2652 reason for rejecting RCPT. Now it says "Previous (cached) callout
2653 verification failure".
2654
2655 3. There was an off-by-one bug in the queryprogram router. An over-long
2656 return line was truncated at 256 instead of 255 characters, thereby
2657 overflowing its buffer with the terminating zero. As well as fixing this, I
2658 have increased the buffer size to 1024 (and made a note to document this).
2659
2660 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2661 when Exim is waiting for an SMTP response from a remote server, Exim
2662 restarts its select() call on the socket, thereby resetting its timeout.
2663 This is not a problem when such interrupts are rare. Somebody set up a cron
2664 job to run exiwhat every 2 minutes, which is less than the normal select()
2665 timeout (5 or 10 minutes). This meant that the select() timeout never
2666 kicked in because it was always reset. I have fixed this by comparing the
2667 time when an interrupt arrives with the time at the start of the first call
2668 to select(). If more time than the timeout has elapsed, the interrupt is
2669 treated as a timeout.
2670
2671 5. Some internal re-factoring in preparation for the addition of Sieve
2672 extensions (by MH). In particular, the "personal" test is moved to a
2673 separate function, and given an option for scanning Cc: and Bcc: (which is
2674 not set for Exim filters).
2675
2676 6. When Exim created an email address using the login of the caller as the
2677 local part (e.g. when creating a From: or Sender: header line), it was not
2678 quoting the local part when it contained special characters such as @.
2679
2680 7. Installed new OpenBSD configuration files.
2681
2682 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2683 try to make them clearer.
2684
2685 9. Callout options, other than the timeout value, were being ignored when
2686 verifying sender addresses in header lines. For example, when using
2687
2688 verify = header_sender/callout=no_cache
2689
2690 the cache was (incorrectly) being used.
2691
269210. Added a missing instance of ${EXE} to the exim_install script; this affects
2693 only the Cygwin environment.
2694
269511. When return_path_on_delivery was set as a log selector, if different remote
2696 addresses in the same message used different return paths and parallel
2697 remote delivery occurred, the wrong values would sometimes be logged.
2698 (Whenever a remote delivery process finished, the return path value from
2699 the most recently started remote delivery process was logged.)
2700
270112. RFC 3848 specifies standard names for the "with" phrase in Received: header
2702 lines when AUTH and/or TLS are in use. This is the "received protocol"
2703 field. Exim used to use "asmtp" for authenticated SMTP, without any
2704 indication (in the protocol name) for TLS use. Now it follows the RFC and
2705 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2706 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2707 names appear in log lines as well as in Received: header lines.
2708
270913. Installed MH's patches for Sieve to add the "copy" and "vacation"
2710 extensions, and comparison tests, and to fix some bugs.
2711
271214. Changes to the "personal" filter test:
2713
2714 (1) The test was buggy in that it was just doing the equivalent of
2715 "contains" tests on header lines. For example, if a user's address was
2716 anne@some.where, the "personal" test would incorrectly be true for
2717
2718 To: susanne@some.where
2719
2720 This test is now done by extracting each address from the header in turn,
2721 and checking the entire address. Other tests that are part of "personal"
2722 are now done using regular expressions (for example, to check local parts
2723 of addresses in From: header lines).
2724
2725 (2) The list of non-personal local parts in From: addresses has been
2726 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2727 taken from the Sieve specification recommendations.
2728
2729 (3) If the message contains any header line starting with "List-" it is
2730 treated as non-personal.
2731
2732 (4) The test for "circular" in the Subject: header line has been removed
2733 because it now seems ill-conceived.
2734
273515. Minor typos in src/EDITME comments corrected.
2736
273716. Installed latest exipick from John Jetmore.
2738
273917. If headers_add on a router specified a text string that was too long for
2740 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2741 of string_sprintf() is now avoided.
2742
274318. $message_body_size was not set (it was always zero) when running the DATA
2744 ACL and the local_scan() function.
2745
274619. For the "mail" command in an Exim filter, no default was being set for
2747 the once_repeat time, causing a random time value to be used if "once" was
2748 specified. (If the value happened to be <= 0, no repeat happened.) The
2749 default is now 0s, meaning "never repeat". The "vacation" command was OK
2750 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2751 (I found it when inspecting the code).
2752
275320. There is now an overall timeout for performing a callout verification. It
2754 defaults to 4 times the callout timeout, which applies to individual SMTP
2755 commands during the callout. The overall timeout applies when there is more
2756 than one host that can be tried. The timeout is checked before trying the
2757 next host. This prevents very long delays if there are a large number of
2758 hosts and all are timing out (e.g. when the network connections are timing
2759 out). The value of the overall timeout can be changed by specifying an
2760 additional sub-option for "callout", called "maxwait". For example:
2761
2762 verify = sender/callout=5s,maxwait=20s
2763
276421. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2765 to the end before writing, but this should make it even safer).
2766
276722. Exim was forgetting that it had advertised PIPELINING for the second and
2768 subsequent messages on an SMTP connection. It was also not resetting its
2769 memory on STARTTLS and an internal HELO.
2770
277123. When Exim logs an SMTP synchronization error within a session, it now
2772 records whether PIPELINING has been advertised or not.
2773
277424. Added 3 instances of "(long int)" casts to time_t variables that were being
2775 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2776 rather than long int.
2777
277825. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2779
278026. Added the never_mail option to autoreply.
2781
2782
2783Exim version 4.41
2784-----------------
2785
2786 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2787 crash if the getsockname() call failed; this can happen if a connection is
2788 closed very soon after it is established. The problem was simply in the
2789 order in which certain operations were done, causing Exim to try to write
2790 to the SMTP stream before it had set up the file descriptor. The bug has
2791 been fixed by making things happen in the correct order.
2792
2793
2794Exim version 4.40
2795-----------------
2796
2797 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2798 before the connection was closed, thus losing the rejection response.
2799
2800 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2801 some early Solaris releases, but causes trouble in current releases where
2802 socklen_t is defined.
2803
2804 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2805 always exist.
2806
2807 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2808 configured.
2809
2810 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2811 that releasing the top of it at the end releases what was used for sub-
2812 expansions (unless the block got too big). However, discard this block if
2813 the first thing is a variable or header, so that we can use its block when
2814 it is dynamic (useful for very large $message_headers, for example).
2815
2816 6. Lookups now cache *every* query, not just the most recent. A new, separate
2817 store pool is used for this. It can be recovered when all lookup caches are
2818 flushed. Lookups now release memory at the end of their result strings.
2819 This has involved some general refactoring of the lookup sources.
2820
2821 7. Some code has been added to the store_xxx() functions to reduce the amount
2822 of flapping under certain conditions.
2823
2824 8. log_incoming_interface used to affect only the <= reception log lines. Now
2825 it causes the local interface and port to be added to several more SMTP log
2826 lines, for example "SMTP connection from", and rejection lines.
2827
2828 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2829
283010. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2831
283211. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2833 could be overwritten at the end of the current message (or the start of a
2834 new message if it was set in a HELO ACL). The value is now preserved for
2835 the duration of the SMTP connection.
2836
283712. If a transport had a headers_rewrite setting, and a matching header line
2838 contained an unqualified address, that address was qualified, even if it
2839 did not match any rewriting rules. The underlying bug was that the values
2840 of the flags that permit the existence of unqualified sender and recipient
2841 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2842 non-local messages, and by -bnq for local messages) were not being
2843 preserved with the message after it was received.
2844
284513. When Exim was logging an SMTP synchronization error, it could sometimes log
2846 "next input=" as part of the text comprising the host identity instead of
2847 the correct text. The code was using the same buffer for two different
2848 strings. However, depending on which order the printing function evaluated
2849 its arguments, the bug did not always show up. Under Linux, for example, my
2850 test suite worked just fine.
2851
285214. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2853 doesn't work with some older versions of Perl. It has been changed to "my",
2854 which in any case is probably the better facility to use.
2855
285615. A really picky compiler found some instances of statements for creating
2857 error messages that either had too many or two few arguments for the format
2858 string.
2859
286016. The size of the buffer for calls to the DNS resolver has been increased
2861 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2862 for addresses that have a lot of PTR records. This alleviates a problem; it
2863 does not fully solve it.
2864
286517. A dnsdb lookup for PTR records that receives more data than will fit in the
2866 buffer now truncates the list and logs the incident, which is the same
2867 action as happens when Exim is looking up a host name and its aliases.
2868 Previously in this situation something unpredictable would happen;
2869 sometimes it was "internal error: store_reset failed".
2870
287118. If a server dropped the connection unexpectedly when an Exim client was
2872 using GnuTLS and trying to read a response, the client delivery process
2873 crashed while trying to generate an error log message.
2874
287519. If a "warn" verb in an ACL added multiple headers to a message in a single
2876 string, for example:
2877
2878 warn message = H1: something\nH2: something
2879
2880 the text was added as a single header line from Exim's point of view
2881 though it ended up OK in the delivered message. However, searching for the
2882 second and subsequent header lines using $h_h2: did not work. This has been
2883 fixed. Similarly, if a system filter added multiple headers in this way,
2884 the routers could not see them.
2885
288620. Expanded the error message when iplsearch is called with an invalid key to
2887 suggest using net-iplsearch in a host list.
2888
288921. When running tests using -bh, any delays imposed by "delay" modifiers in
2890 ACLs are no longer actually imposed (and a message to that effect is
2891 output).
2892
289322. If a "gecos" field in a passwd entry contained escaped characters, in
2894 particular, if it contained a \" sequence, Exim got it wrong when building
2895 a From: or a Sender: header from that name. A second bug also caused
2896 incorrect handling when an unquoted " was present following a character
2897 that needed quoting.
2898
289923. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2900 was not being matched caselessly.
2901
290224. Arranged for all hyphens in the exim.8 source to be escaped with
2903 backslashes.
2904
290525. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2906 properly. Recipient callout cache records were still being keyed to include
2907 the sender, even when use_sender was set false. This led to far more
2908 callouts that were necessary. The sender is no longer included in the key
2909 when use_sender is false.
2910
291126. Added "control = submission" modifier to ACLs.
2912
291327. Added the ${base62d: operator to decode base 62 numbers.
2914
291528. dnsdb lookups can now access SRV records.
2916
291729. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2918 the configuration file.
2919
292030. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2921 (-v) mode. This makes the output for a verbose queue run more intelligible.
2922
292331. Added a use_postmaster feature to recipient callouts.
2924
292532. Added the $body_zerocount variable, containing the number of binary zero
2926 bytes in the message body.
2927
292833. The time of last modification of the "new" subdirectory is now used as the
2929 "mailbox time last read" when there is a quota error for a maildir
2930 delivery.
2931
293234. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2933
293435. Added +ignore_unknown as a special item in host lists.
2935
293636. Code for decoding IPv6 addresses in host lists is now included, even if
2937 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2938 address was recognized as an IP address, but was then not correctly decoded
2939 into binary, causing unexpected and incorrect effects when compared with
2940 another IP address.
2941
2942
2943Exim version 4.34
2944-----------------
2945
2946 1. Very minor rewording of debugging text in manualroute to say "list of
2947 hosts" instead of "hostlist".
2948
2949 2. If verify=header_syntax was set, and a header line with an unqualified
2950 address (no domain) and a large number of spaces between the end of the
2951 name and the colon was received, the reception process suffered a buffer
2952 overflow, and (when I tested it) crashed. This was caused by some obsolete
2953 code that should have been removed. The fix is to remove it!
2954
2955 3. When running in the test harness, delay a bit after writing a bounce
2956 message to get a bit more predictability in the log output.
2957
2958 4. Added a call to search_tidyup() just before forking a reception process. In
2959 theory, someone could use a lookup in the expansion of smtp_accept_max_
2960 per_host which, without the tidyup, could leave open a database connection.
2961
2962 5. Added the variables $recipient_data and $sender_data which get set from a
2963 lookup success in an ACL "recipients" or "senders" condition, or a router
2964 "senders" option, similar to $domain_data and $local_part_data.
2965
2966 6. Moved the writing of debug_print from before to after the "senders" test
2967 for routers.
2968
2969 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2970 problems for message scanning, either using a data ACL, or using
2971 local_scan() because the Received: header was not generated till after they
2972 were called (in order to set the time as the time of reception completion).
2973 I have revised the way this works. The header is now generated after the
2974 body is received, but before the ACL or local_scan() are called. After they
2975 are run, the timestamp in the header is updated.
2976
2977
2978Exim version 4.33
2979-----------------
2980
2981 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2982 before starting a queue runner without re-exec. This happened only when
2983 deliver_drop_privilege was set or when the Exim user was set to root. The
2984 effect of the bug was that timeouts during subsequent deliveries caused
2985 crashes instead of being properly handled. The handler is now left at its
2986 default (and expected) setting.
2987
2988 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2989 message, again when deliver_drop_privilege is set or Exim is run as root.
2990 The bug described in (1) was not present in this case, but the tidying up
2991 of the other signals was missing. I have made the two cases consistent.
2992
2993 3. The ignore_target_hosts setting on a manualroute router was being ignored
2994 for hosts that were looked up using the /MX notation.
2995
2996 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2997 in domain lists.
2998
2999 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3000 operated on the sender address. After changing the $sender_address to <>
3001 for the sender address verify, Exim was re-instated it as the original
3002 (before rewriting) address, but remembering that it had rewritten it, so it
3003 wasn't rewriting it again. This bug also had the effect of breaking the
3004 sender address verification caching when the sender address was rewritten.
3005
3006 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3007 This has been changed so that if the ip literal address matches
3008 ignore_target_hosts, the router declines.
3009
3010 7. Added expansion conditions match_domain, match_address, and match_local_
3011 part (NOT match_host).
3012
3013 8. The placeholder for the Received: header didn't have a length field set.
3014
3015 9. Added code to Exim itself and to exim_lock to test for a specific race
3016 condition that could lead to file corruption when using MBX delivery. The
3017 issue is with the lockfile that is created in /tmp. If this file is removed
3018 after a process has opened it but before that process has acquired a lock,
3019 there is the potential for a second process to recreate the file and also
3020 acquire a lock. This could lead to two Exim processes writing to the file
3021 at the same time. The added code performs the same test as UW imapd; it
3022 checks after acquiring the lock that its file descriptor still refers to
3023 the same named file.
3024
302510. The buffer for building added header lines was of fixed size, 8192 bytes.
3026 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3027 when Exim is built.
3028
302911. Added the smtp_active_hostname option. If used, this will typically be made
3030 to depend on the incoming interface address. Because $interface_address is
3031 not set up until the daemon has forked a reception process, error responses
3032 that can happen earlier (such as "too many connections") no longer contain
3033 a host name.
3034
303512. If an expansion in a condition on a "warn" statement fails because a lookup
3036 defers, the "warn" statement is abandoned, and the next ACL statement is
3037 processed. Previously this caused the whole ACL to be aborted.
3038
303913. Added the iplsearch lookup type.
3040
304114. Added ident_timeout as a log selector.
3042
304315. Added tls_certificate_verified as a log selector.
3044
304516. Added a global option tls_require_ciphers (compare the smtp transport
3046 option of the same name). This controls incoming TLS connections.
3047
304817. I finally figured out how to make tls_require_ciphers do a similar thing
3049 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3050 before starting the TLS session.
3051
305218. Tabs are now shown as \t in -bP output.
3053
305419. If the log selector return_path_on_delivery was set, Exim crashed when
3055 bouncing a message because it had too many Received: header lines.
3056
305720. If two routers both had headers_remove settings, and the first one included
3058 a superfluous trailing colon, the final name in the first list and the
3059 first name in the second list were incorrectly joined into one item (with a
3060 colon in the middle).
3061
3062
3063Exim version 4.32
3064-----------------
3065
3066 1. Added -C and -D options to the exinext utility, mainly to make it easier
3067 to include in the automated testing, but these could be helpful when
3068 multiple configurations are in use.
3069
3070 2. The exinext utility was not formatting the output nicely when there was
3071 an alternate port involved in the retry record key, nor when there was a
3072 message id as well (for retries that were specific to a specific message
3073 and a specific host). It was also confused by IPv6 addresses, because of
3074 the additional colons they contain. I have fixed the IPv4 problem, and
3075 patched it up to do a reasonable job for IPv6.
3076
3077 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3078 delivery, the log line now contains "pipelined" if PIPELINING was used.
3079
3080 4. An SMTP transport process used to panic and die if the bind() call to set
3081 an explicit outgoing interface failed. This has been changed; it is now
3082 treated in the same way as a connect() failure.
3083
3084 5. A reference to $sender_host_name in the part of a conditional expansion
3085 that was being skipped was still causing a DNS lookup. This no longer
3086 occurs.
3087
3088 6. The def: expansion condition was not recognizing references to header lines
3089 that used bh_ and bheader_.
3090
3091 7. Added the _cache feature to named lists.
3092
3093 8. The code for checking quota_filecount in the appendfile transport was
3094 allowing one more file than it should have been.
3095
3096 9. For compatibility with Sendmail, the command line option
3097
3098 -prval:sval
3099
3100 is equivalent to
3101
3102 -oMr rval -oMs sval
3103
3104 and sets the incoming protocol and host name (for trusted callers). The
3105 host name and its colon can be omitted when only the protocol is to be set.
3106 Note the Exim already has two private options, -pd and -ps, that refer to
3107 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3108 "s", but I don't think that's a major issue.
3109
311010. A number of refactoring changes to the code, none of which should affect
3111 Exim's behaviour:
3112
3113 (a) The number of logging options was getting close to filling up the
3114 32-bit word that was used as a bit map. I have split them into two classes:
3115 those that are passed in the argument to log_write(), and those that are
3116 only ever tested independently outside of that function. These are now in
3117 separate 32-bit words, so there is plenty of room for expansion again.
3118 There is no change in the user interface or the logging behaviour.
3119
3120 (b) When building, for example, log lines, the code previously used a
3121 macro that called string_cat() twice, in order to add two strings. This is
3122 not really sufficiently general. Furthermore, there was one instance where
3123 it was actually wrong because one of the argument was used twice, and in
3124 one call a function was used. (As it happened, calling the function twice
3125 did not affect the overall behaviour.) The macro has been replaced by a
3126 function that can join an arbitrary number of extra strings onto a growing
3127 string.
3128
3129 (c) The code for expansion conditions now uses a table and a binary chop
3130 instead of a serial search (which was left over from when there were very
3131 few conditions). Also, it now recognizes conditions like "pam" even when
3132 the relevant support is not compiled in: a suitably worded error message is
3133 given if an attempt is made to use such a condition.
3134
313511. Added ${time_interval:xxxxx}.
3136
313712. A bug was causing one of the ddress fields not to be passed back correctly
3138 from remote delivery subprocesses. The field in question was not being
3139 subsequently used, so this caused to problems in practice.
3140
314113. Added new log selectors queue_time and deliver_time.
3142
314314. Might have fixed a bug in maildirsizefile handling that threw up
3144 "unexpected character" debug warnings, and recalculated the data
3145 unnecessarily. In any case, I expanded the warning message to give more
3146 information.
3147
314815. Added the message "Restricted characters in address" to the statements in
3149 the default ACL that block characters like @ and % in local parts.
3150
315116. Change 71 for release 4.31 proved to be much less benign that I imagined.
3152 Three changes have been made:
3153
3154 (a) There was a serious bug; a negative response to MAIL caused the whole
3155 recipient domain to be cached as invalid, thereby blocking all messages
3156 to all local parts at the same domain, from all senders. This bug has
3157 been fixed. The domain is no longer cached after a negative response to
3158 MAIL if the sender used is not empty.
3159
3160 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3161 been restored.
3162
3163 (c) A new callout option, "use_sender" has been added for people who want
3164 the modified behaviour.
3165
3166
3167Exim version 4.31
3168-----------------
3169
3170 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3171 Larry Rosenman.
3172
3173 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3174 indeed breaks things for older releases.
3175
3176 3. Added additional logging to the case where there is a problem reading data
3177 from a filter that is running in a subprocess using a pipe, in order to
3178 try to track down a specific problem.
3179
3180 4. Testing facility fudge: when running in the test harness and attempting
3181 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3182 getting "No route to host". Convert this to a timeout.
3183
3184 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3185 warning.
3186
3187 6. Some OS don't have socklen_t but use size_t instead. This affects the
3188 fifth argument of getsockopt() amongst other things. This is now
3189 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3190 can be set for individual OS. I have set it for SunOS5, OSF1, and
3191 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3192 some earlier ones do not.
3193
3194 7. Change 4.30/15 was not doing the test caselessly.
3195
3196 8. The standard form for an IPv6 address literal was being rejected by address
3197 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3198 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3199 this, as well as the form without the "IPv6" on the front (but only when
3200 address literals are enabled, of course).
3201
3202 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3203
320410. Exim crashed if a message with an empty sender address specified by -f
3205 encountered a router with an errors_to setting. This could be provoked only
3206 by a command such as
3207
3208 exim -f "" ...
3209
3210 where an empty string was supplied; "<>" did not hit this bug.
3211
321211. Installed PCRE release 4.5.
3213
321412. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3215 remained set. It is now erased.
3216
321713. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3218 times from message ids (which are base 36 rather than the normal 62).
3219
322014. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3221 were being counted as actual protocol errors, and logged if the log
3222 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3223 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3224 and DATA following a set of rejected RCPTs do not count as protocol errors.
3225 In other words, Exim assumes they were pipelined, though this may not
3226 actually be the case. Of course, in all cases the client gets an
3227 appropriate error code.
3228
322915. If a lookup fails in an ACL condition, a message about the failure may
3230 be available; it is used if testing the ACL cannot continue, because most
3231 such messages specify what the cause of the deferral is. However, some
3232 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3233 that caused an old message to be retained and used if a later statement
3234 caused a defer, replacing the real cause of the deferral.
3235
323616. If an IP address had so many PTR records that the DNS lookup buffer
3237 was not large enough to hold them, Exim could crash while trying to process
3238 the truncated data. It now detects and logs this case.
3239
324017. Further to 4.21/58, another change has been made: if (and only if) the
3241 first line of a message (the first header line) ends with CRLF, a bare LF
3242 in a subsequent header line has a space inserted after it, so as not to
3243 terminate the header.
3244
324518. Refactoring: tidied an ugly bit of code in appendfile that copied data
3246 unnecessarily, used atoi() instead of strtol(), and didn't check the
3247 termination when getting file sizes from file names by regex.
3248
324919. Completely re-implemented the support for maildirsize files, in the light
3250 of a number of problems with the previous contributed implementation
3251 (4.30/29). In particular:
3252
3253 . If the quota is zero, the maildirsize file is maintained, but no quota is
3254 imposed.
3255
3256 . If the maildir directory does not exist, it is created before any attempt
3257 to write a maildirsize file.
3258
3259 . The quota value in the file is just a cache; if the quota is changed in
3260 the transport, the new value overrides.
3261
3262 . A regular expression is available for excluding directories from the
3263 count.
3264
326520. The autoreply transport checks the characters in options that define the
3266 message's headers; it allows continued headers, but it was checking with
3267 isspace() after an embedded newline instead of explicitly looking for a
3268 space or a tab.
3269
327021. If all the "regular" hosts to which an address was routed had passed their
3271 expiry times, and had not reached their retry times, the address was
3272 bounced, even if fallback hosts were defined. Now Exim should go on to try
3273 the fallback hosts.
3274
327522. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3276 equivalent code in the SMTP transport. Some hosts send humungous responses
3277 to HELO/EHLO, more than 1024 it seems.
3278
327923. Refactoring: code in filter.c used (void *) for "any old type" but this
3280 gives compiler warnings in some environments. I've now done it "properly",
3281 using a union.
3282
328324. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3284 (because of problems with the built-in one) was declared to return uschar *
3285 instead of char *, causing compiler failure.
3286
328725. Fixed a file descriptor leak when processing alias/forward files.
3288
328926. Fixed a minor format string issue in dbfn.c.
3290
329127. Typo in exim.c: ("dmbnz" for "dbmnz").
3292
329328. If a filter file refered to $h_xxx or $message_headers, and the headers
3294 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3295 become corrupted.
3296
329729. When a sender address is verified, it is cached, to save repeating the test
3298 when there is more than one recipient in a message. However, when the
3299 verification involves a callout, it is possible for different callout
3300 options to be set for different recipients. It is too complicated to keep
3301 track of this in the cache, so now Exim always runs a verification when a
3302 callout is required, relying on the callout cache for the optimization.
3303 The overhead is duplication of the address routing, but this should not be
3304 too great.
3305
330630. Fixed a bug in callout caching. If a RCPT command caused the sender address
3307 to be verified with callout=postmaster, and the main callout worked but the
3308 postmaster check failed, the verification correctly failed. However, if a
3309 subsequent RCPT command asked for sender verification *without* the
3310 postmaster check, incorrect caching caused this verification also to fail,
3311 incorrectly.
3312
331331. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3314 it was not caching the DNS options (qualify_single, search_parents) that
3315 were used when the lookup failed. A subsequent lookup with different
3316 options therefore always gave the same answer, though there were cases
3317 where it should not have. (Example: a "domains = !$mx_any" option on a
3318 dnslookup router: the "domains" option is always processed without any
3319 widening, but the router might have qualify_single set.) Now Exim uses the
3320 cached value only when the same options are set.
3321
332232. Added John Jetmore's "exipick" utility to the distribution.
3323
332433. GnuTLS: When an attempt to start a TLS session fails for any reason other
3325 than a timeout (e.g. a certificate is required, and is not provided), an
3326 Exim server now closes the connection immediately. Previously it waited for
3327 the client to close - but if the client is SSL, it seems that they each
3328 wait for each other, leading to a delay before one of them times out.
3329
333034: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3331 maintained 0.8.x compatibility because I don't think many are using it, and
3332 it is clearly obsolete.
3333
333435. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3335 transport.
3336
333736. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3338 client certificate was expired. A simple patch fixes this, though I don't
3339 understand the full logic of why the verify callback is called multiple
3340 times.
3341
334237. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3343 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3344 which causes problems with some clients (such as the Certicom SSL Plus
3345 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3346 disables the coutermeasure allowing Eudora to connect."
3347
334838. Exim was not checking that a write() to a log file succeeded. This could
3349 lead to Bad Things if a log got too big, in particular if it hit a file
3350 size limit. Exim now panics and dies if it cannot write to a log file, just
3351 as it does if it cannot open a log file.
3352
335339. Modified OS/Makefile-Linux so that it now contains
3354
3355 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3356
3357 The two -D definitions ensure that Exim is compiled with large file
3358 support, which makes it possible to handle log files that are bigger than
3359 2^31.
3360
336140. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3362 instance) a domain was checked against a named list that involved a lookup,
3363 causing $domain_data to be set, then another domain was checked against the
3364 same list, then the first domain was re-checked, the value of $domain_data
3365 after the final check could be wrong. In particular, if the second check
3366 failed, it could be set empty. This bug probably also applied to
3367 $localpart_data.
3368
336941. The strip_trailing_dot option was not being applied to the address given
3370 with the -f command-line option.
3371
337242. The code for reading a message's header from the spool was incrementing
3373 $received_count, but never initializing it. This meant that the value was
3374 incorrect (doubled) while delivering a message in the same process in which
3375 it was received. In the most common configuration of Exim, this never
3376 happens - a fresh exec is done - but it can happen when
3377 deliver_drop_privilege is set.
3378
337943. When Exim logs an SMTP synchronization error - client data sent too soon -
3380 it now includes up to 150 characters of the unexpected data in the log
3381 line.
3382
338344. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3384 and building data strings. The size of both of these buffers was 10 000
3385 bytes - far larger than anybody would *ever* want, thought I. Needless to
3386 say, somebody hit the limit. I have increased the maximum line length to
3387 20 000 and the maximum data length of concatenated lines to 100 000. I have
3388 also fixed two bugs, because there was no checking on these buffers. Tsk,
3389 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3390 buffer is too small.
3391
339245. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3393 lsearch lookups. Now it does.
3394
339546. When parsing a route_list item in a manualroute router, a fixed-length
3396 buffer was used for the list of hosts. I made this 1024 bytes long,
3397 thinking that nobody would ever have a list of hosts that long. Wrong.
3398 Somebody had a whole pile of complicated expansion conditions, and the
3399 string was silently truncated, leading to an expansion error. It turns out
3400 that it is easier to change to an unlimited length (owing to other changes
3401 that have happened since this code was originally written) than to build
3402 structure for giving a limitation error. The length of the item that
3403 expands into the list of hosts is now unlimited.
3404
340547. The lsearch lookup could not handle data where the length of text line was
3406 more than 4095 characters. Such lines were truncated, leading to shortened
3407 data being returned. It should now handle lines of any length.
3408
340948. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3410 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3411 ACL").
3412
341349. Cosmetic tidy to scripts like exicyclog that are generated by globally
3414 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3415 no longer happens in comment lines. A list of replacements is now placed
3416 at the head of all of the source files, except those whose only change is
3417 to replace PERL_COMMAND in the very first #! line.
3418
341950. Replaced the slow insertion sort in queue.c, for sorting the list of
3420 messages on the queue, with a bottom-up merge sort, using code contributed
3421 by Michael Haardt. This should make operations like -bp somewhat faster on
3422 large queues. It won't affect queue runners, except when queue_run_in_order
3423 is set.
3424
342551. Installed eximstats 1.31 in the distribution.
3426
342752. Added support for SRV lookups to the dnslookup router.
3428
342953. If an ACL referred to $message_body or $message_body_end, the value was not
3430 reset for any messages that followed in the same SMTP session.
3431
343254. The store-handling optimization for building very long strings was not
3433 differentiating between the different store pools. I don't think this
3434 actually made any difference in practice, but I've tidied it.
3435
343655. While running the routers to verify a sender address, $sender_address
3437 was still set to the sender address. This is wrong, because when routing to
3438 send a bounce to the sender, it would be empty. Therefore, I have changed
3439 it so that, while verifying a sender address, $sender_address is set to <>.
3440 (There is no change to what happens when verifying a recipient address.)
3441
344256. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3443 target A or AAAA records (if not already returned) without resetting the
3444 qualify_single or search_parents options of the DNS resolver. These are
3445 inappropriate in this case because the targets of MX and SRV records must
3446 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3447 target that, when qualified, matched something in the local domain. These
3448 two options are now turned off when doing these lookups.
3449
345057. It seems that at least some releases of Reiserfs (which does not have the
3451 concept of a fixed number of inodes) returns zero and not -1 for the
3452 number of available inodes. This interacted badly with check_spool_inodes,
3453 which assumed that -1 was the "no such thing" setting. What I have done is
3454 to check that the total number of inodes is greater than zero before doing
3455 the test of how many are available.
3456
345758. When a "warn" ACL statement has a log_message modifier, the message is
3458 remembered, and not repeated. This is to avoid a lot of repetition when a
3459 message has many recipients that cause the same warning to be written.
3460 Howewer, Exim was preserving the list of already written lines for an
3461 entire SMTP session, which doesn't seem right. The memory is now reset if a
3462 new message is started.
3463
346459. The "rewrite" debugging flag was not showing the result of rewriting in the
3465 debugging output unless log_rewrite was also set.
3466
346760. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3468 of (int)(handle) when we know that handle contains (void *)(-1).
3469
347061. The Exim daemon panic-logs an error return when it closes the incoming
3471 connection. However "connection reset by peer" seems to be common, and
3472 isn't really an error worthy of noting specially, so that particular error
3473 is no long logged.
3474
347562. When Exim is trying to find all the local interfaces, it used to panic and
3476 die if the ioctl to get the interface flags failed. However, it seems that
3477 on at least one OS (Solaris 9) it is possible to have an interface that is
3478 included in the list of interfaces, but for which you get a failure error
3479 for this call. This happens when the interface is not "plumbed" into a
3480 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3481 failure of the "get flags" call assumes that the interface is down.
3482
348363. Added a ${eval10: operator, which assumes all numbers are decimal. This
3484 makes life easier for people who are doing arithmetic on fields extracted
3485 from dates, where you often get leading zeros that should not be
3486 interpreted as octal.
3487
348864. Added qualify_domain to the redirect router, to override the global
3489 setting.
3490
349165. If a pathologically long header line contained very many addresses (the
3492 report of this problem mentioned 10 000) and each of them was rewritten,
3493 Exim could use up a very large amount of memory. (It kept on making new
3494 copies of the header line as it rewrote, and never released the old ones.)
3495 At the expense of a bit more processing, the header rewriting function has
3496 been changed so that it no longer eats memory in this way.
3497
349866. The generation of the Received: header has been moved from the time that a
3499 message starts to be received, to the time that it finishes. The timestamp
3500 in the Received: header should now be very close to that of the <= log
3501 line. There are two side-effects of this change:
3502
3503 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3504 logged header lines no longer include the local Received: line, because
3505 it has not yet been created. The same applies to a copy of the message
3506 that is returned to a non-SMTP sender when a message is rejected.
3507
3508 (b) When a filter file is tested using -bf, no additional Received: header
3509 is added to the test message. After some thought, I decided that this
3510 is a bug fix.
3511
3512 This change does not affect the value of $received_for. It is still set
3513 after address rewriting, but before local_scan() is called.
3514
351567. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3516
351768. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3518 gave an unhelpful panic error message, and a defer error. I have managed to
3519 change this behaviour so that it now rejects any supplied certificate,
3520 which seems right, as the list of acceptable certificates is empty.
3521
352269. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3523 gave an unhelpful defer error. I have not managed to make this reject any
3524 supplied certificates, but the error message it gives is "no certificate
3525 supplied", which is not helpful.
3526
352770. exigrep's output now also includes lines that are not associated with any
3528 message, but which match the given pattern. Implemented by a patch from
3529 Martin Sluka, which also tidied up the Perl a bit.
3530
353171. Recipient callout verification, like sender verification, was using <> in
3532 the MAIL FROM command. This isn't really the right thing, since the actual
3533 sender may affect whether the remote host accepts the recipient or not. I
3534 have changed it to use the actual sender in the callout; this means that
3535 the cache record is now keyed on a recipient/sender pair, not just the
3536 recipient address. There doesn't seem to be a real danger of callout loops,
3537 since a callout by the remote host to check the sender would use <>.
3538 [SEE ABOVE: changed after hitting problems.]
3539
354072. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3541 temporary errors. However, in the case of such a code being given after
3542 the end of a data transmission (i.e. after ".") Exim was failing to write
3543 a retry record for the message. (Yes, there was some broken host that was
3544 actually sending 8xx at this point.)
3545
354673. An unknown lookup type in a host list could cause Exim to panic-die when
3547 the list was checked. (An example that provoked this was putting <; in the
3548 middle of a list instead of at the start.) If this happened during a DATA
3549 ACL check, a -D file could be left lying around. This kind of configuration
3550 error no longer causes Exim to die; instead it causes a defer errror. The
3551 incident is still logged to the main and panic logs.
3552
355374. Buglet left over from Exim 3 conversion. The message "too many messages
3554 in one connection" was written to the rejectlog but not the mainlog, except
3555 when address rewriting (yes!) was being logged.
3556
355775. Added write_rejectlog option.
3558
355976. When a system filter was run not as root (that is, when system_filter_user
3560 was set), the values of the $n variables were not being returned to the
3561 main process; thus, they were not subsequently available in the $sn
3562 variables.
3563
356477. Added +return_path_on_delivery log selector.
3565
356678. A connection timeout was being treated differently from recipients deferred
3567 when testing hosts_max_try with a message that was older than the host's
3568 retry timeout. (The host should not be counted, thus allowing all hosts to
3569 be tried at least once before bouncing.) This may have been the cause of an
3570 occasionally reported bug whereby a message would remain on the queue
3571 longer than the retry timeout, but would be bounced if a delivery was
3572 forced. I say "may" because I never totally pinned down the problem;
3573 setting up timeout/retry tests is difficult. See also the next item.
3574
357579. The ultimate address timeout was not being applied to errors that involved
3576 a combination of host plus message (for example, a timeout on a MAIL
3577 command). When an address resolved to a number of possible hosts, and they
3578 were not all tried for each delivery (e.g. because of hosts_max_try), a
3579 message could remain on the queue longer than the retry timeout.
3580
358180. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3582 Haardt.
3583
358481. Fixed an obscure SMTP outgoing bug which required at least the following
3585 conditions: (a) there was another message waiting for the same server;
3586 (b) the server returned 5xx to all RCPT commands in the first message so
3587 that the message was not completed; (c) the server dropped the connection
3588 or gave a negative response to the RSET that Exim sends to abort the
3589 transaction. The observed case was a dropped connection after DATA that had
3590 been sent in pipelining mode. That is, the server had advertised PIPELINING
3591 but was not implementing it correctly. The effect of the bug was incorrect
3592 behaviour, such as trying another host, and this could lead to a crash.
3593
3594
3595Exim version 4.30
3596-----------------
3597
3598 1. The 3rd argume