s/EXTRA_LIBS/EXTRALIBS/ in EDITME
[exim.git] / doc / doc-txt / ChangeLog
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ea2c01d2 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.442 2006/12/06 09:46:03 magnus Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
944e9e9c
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6Exim version 4.64
7-----------------
aa41d2de 8
21d74bd9
TK
9TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
10 leftover -K file (the existence of which was triggered by #402).
11 While we were at it, introduced process PID as part of the -K
12 filename. This should rule out race conditions when creating
13 these files.
14
15TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
16 processing considerably. Previous code took too long for large mails,
17 triggering a timeout which in turn triggers #401.
18
19TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
20 in the DK code in transports.c. sendfile() is not really portable,
21 hence the _LINUX specificness.
944e9e9c
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22
23TF/01 In the add_headers option to the mail command in an Exim filter,
24 there was a bug that Exim would claim a syntax error in any
25 header after the first one which had an odd number of characters
26 in the field name.
27
2b1c6e3a
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28PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
29 callout verification, Exim cached a "reject" for the entire domain. This
30 is correct for most verifications, but it is not correct for a recipient
31 verification with use_sender or use_postmaster set, because in that case
32 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
33 case of MAIL FROM:<> rejection from other early rejections (e.g.
34 rejection of HELO). When verifying a recipient using a non-null MAIL
35 address, the cache is ignored if it shows MAIL FROM:<> rejection.
36 Whatever the result of the callout, the value of the domain cache is
37 left unchanged (for any other kind of callout, getting as far as trying
38 RCPT means that the domain itself is ok).
39
1f872c80
PH
40PH/02 Tidied a number of unused variable and signed/unsigned warnings that
41 gcc 4.1.1 threw up.
42
43PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
44 manifest itself as EPIPE rather than ECONNECT. When tidying away a
45 session, the daemon ignores ECONNECT errors and logs others; it now
46 ignores EPIPE as well.
47
d203e649
PH
48PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
49 (quoted-printable decoding).
50
cc2ed8f7 51PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 52 later the small subsequent patch to fix an introduced bug.
f951fd57 53
ddfcd446
PH
54PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
55
d45b1de8
PH
56PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
57
58PH/08 An error is now given if message_size_limit is specified negative.
59
38a0a95f 60PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 61 to be given (somewhat) arbitrary names.
38a0a95f 62
a2405d83
JJ
63JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
64 in 4.64-PH/09.
65
66JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
67 miscellaneous code fixes
68
6ea85e9a
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69PH/10 Added the log_reject_target ACL modifier to specify where to log
70 rejections.
71
26da7e20
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72PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
73 hostname. This is wrong, because it relates to the incoming message (and
74 probably the interface on which it is arriving) and not to the outgoing
75 callout (which could be using a different interface). This has been
76 changed to use the value of the helo_data option from the smtp transport
77 instead - this is what is used when a message is actually being sent. If
78 there is no remote transport (possible with a router that sets up host
79 addresses), $smtp_active_hostname is used.
6ea85e9a 80
14aa5a05 81PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 82 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
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83 (a) The code assumed that strncpy() returns a negative number on buffer
84 overflow, which isn't the case. Replaced with Exim's string_format()
85 function.
86 (b) There were several signed/unsigned issues. I just did the minimum
87 hacking in of casts. There is scope for a larger refactoring.
88 (c) The code used strcasecmp() which is not a standard C function.
89 Replaced with Exim's strcmpic() function.
90 (d) The code set only $1; it now sets $auth1 as well.
91 (e) A simple test gave the error "authentication client didn't specify
92 service in request". It would seem that Dovecot has changed its
93 interface. Fortunately there's a specification; I followed it and
94 changed what the client sends and it appears to be working now.
95
ff75a1f7
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96PH/13 Added $message_headers_raw to provide the headers without RFC 2047
97 decoding.
98
e6f6568e
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99PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
100 address A is aliased to B and C, where B exists and C does not. Without
101 -v the output is "A verified" because verification stops after a
102 successful redirection if more than one address is generated. However,
103 with -v the child addresses are also verified. Exim was outputting "A
104 failed to verify" and then showing the successful verification for C,
105 with its parentage. It now outputs "B failed to verify", showing B's
106 parentage before showing the successful verification of C.
107
d6f6e0dc
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108PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
109 look up a TXT record in a specific list after matching in a combined
110 list.
111
322050c2
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112PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
113 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
114 they consult the DNS. I had assumed they would set it the way they
115 wanted; and indeed my experiments on Linux seem to show that in some
116 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
117 To be on the safe side, however, I have now made the interface to
118 host_find_byname() similar to host_find_bydns(), with an argument
119 containing the DNS resolver options. The host_find_byname() function now
120 sets these options at its start, just as host_find_bydns() does. The smtp
121 transport options dns_qualify_single and dns_search_parents are passed to
122 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
123 of host_find_byname() use the default settings of RES_DEFNAMES
124 (qualify_single) but not RES_DNSRCH (search_parents).
125
08955dd3
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126PH/17 Applied (a modified version of) Nico Erfurth's patch to make
127 spool_read_header() do less string testing, by means of a preliminary
128 switch on the second character of optional "-foo" lines. (This is
129 overdue, caused by the large number of possibilities that now exist.
130 Originally there were few.) While I was there, I also converted the
131 str(n)cmp tests so they don't re-test the leading "-" and the first
132 character, in the hope this might squeeze out yet more improvement.
133
1eccaa59
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134PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
135 flag allowing group syntax was set by the header_syntax check but not
136 turned off, possible causing trouble later; (2) The flag was not being
137 set at all for the header_verify test, causing "group"-style headers to
138 be rejected. I have now set it in this case, and also caused header_
139 verify to ignore an empty address taken from a group. While doing this, I
140 came across some other cases where the code for allowing group syntax
141 while scanning a header line wasn't quite right (mostly, not resetting
142 the flag correctly in the right place). These bugs could have caused
143 trouble for malformed header lines. I hope it is now all correct.
144
602e59e5
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145PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
146 with the "reply" argument non-NULL. The code, however (which originally
147 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
148 but it didn't always do it. This confused somebody who was copying the
149 code for some other use. I have removed all the tests.
150
411ef850
PH
151PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
152 feature that was used to support insecure browsers during the U.S. crypto
153 embargo. It requires special client support, and Exim is probably the
154 only MTA that supported it -- and would never use it because real RSA is
155 always available. This code has been removed, because it had the bad
156 effect of slowing Exim down by computing (never used) parameters for the
157 RSA_EXPORT functionality.
158
7befa435
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159PH/21 On the advice of Timo Sirainen, added a check to the dovecot
160 authenticator to fail if there's a tab character in the incoming data
161 (there should never be unless someone is messing about, as it's supposed
162 to be base64-encoded). Also added, on Timo's advice, the "secured" option
163 if the connection is using TLS or if the remote IP is the same as the
164 local IP, and the "valid-client-cert option" if a client certificate has
165 been verified.
166
48da4259 167PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
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168 authenticators. This can be used for authorization after authentication
169 succeeds. (In the case of plaintext, it servers for both authentication
170 and authorization.)
171
48da4259
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172PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
173 if any retry times were supplied.
174
d1d5595c
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175PH/24 Exim crashed if verify=helo was activated during an incoming -bs
176 connection, where there is no client IP address to check. In this
177 situation, the verify now always succeeds.
178
0ef732d9
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179PH/25 Applied John Jetmore's -Mset patch.
180
328895cc
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181PH/26 Added -bem to be like -Mset, but loading a message from a file.
182
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183PH/27 In a string expansion for a processed (not raw) header when multiple
184 headers of the same name were present, leading whitespace was being
185 removed from all of them, but trailing whitespace was being removed only
186 from the last one. Now trailing whitespace is removed from each header
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187 before concatenation. Completely empty headers in a concatenation (as
188 before) are ignored.
fd700877 189
8dce1a6f
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190PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
191 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
192
17af4a17
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193PH/29 [Removed. This was a change that I later backed out, and forgot to
194 correct the ChangeLog entry (that I had efficiently created) before
195 committing the later change.]
f6c332bd
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196
197PH/30 Exim was sometimes attempting to deliver messages that had suffered
198 address errors (4xx response to RCPT) over the same connection as other
199 messages routed to the same hosts. Such deliveries are always "forced",
200 so retry times are not inspected. This resulted in far too many retries
201 for the affected addresses. The effect occurred only when there were more
202 hosts than the hosts_max_try setting in the smtp transport when it had
203 the 4xx errors. Those hosts that it had tried were not added to the list
204 of hosts for which the message was waiting, so if all were tried, there
205 was no problem. Two fixes have been applied:
206
207 (i) If there are any address or message errors in an SMTP delivery, none
208 of the hosts (tried or untried) are now added to the list of hosts
209 for which the message is waiting, so the message should not be a
210 candidate for sending over the same connection that was used for a
211 successful delivery of some other message. This seems entirely
212 reasonable: after all the message is NOT "waiting for some host".
213 This is so "obvious" that I'm not sure why it wasn't done
214 previously. Hope I haven't missed anything, but it can't do any
215 harm, as the worst effect is to miss an optimization.
216
217 (ii) If, despite (i), such a delivery is accidentally attempted, the
218 routing retry time is respected, so at least it doesn't keep
219 hammering the server.
220
c1114884
PH
221PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
222 in ${readsocket because some servers need this prod.
223
7a0743eb
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224PH/32 Added some extra debug output when updating a wait-xxx database.
225
0d85fa3f
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226PH/33 The hint "could be header name not terminated by colon", which has been
227 given for certain expansion errors for a long time, was not being given
228 for the ${if def:h_colon_omitted{... case.
229
1bf43b78
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230PH/34 The spec says: "With one important exception, whenever a domain list is
231 being scanned, $domain contains the subject domain." There was at least
232 one case where this was not true.
233
520de300
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234PH/35 The error "getsockname() failed: connection reset by peer" was being
235 written to the panic log as well as the main log, but it isn't really
236 panic-worthy as it just means the connection died rather early on. I have
237 removed the panic log writing for the ECONNRESET error when getsockname()
238 fails.
239
48c7f9e2
PH
240PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
241 runs only) independently of the message's sender address. This meant
242 that, if the 4xx error was in fact related to the sender, a different
243 message to the same recipient with a different sender could confuse
244 things. In particualar, this can happen when sending to a greylisting
245 server, but other circumstances could also provoke similar problems.
246 I have changed the default so that the retry time for these errors is now
247 based a combination of the sender and recipient addresses. This change
248 can be overridden by setting address_retry_include_sender=false in the
249 smtp transport.
250
99ea1c86
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251PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
252 remote server are returned as part of bounce messages. This was not
253 happening for LMTP over a pipe (the lmtp transport), but now it is the
254 same for both kinds of LMTP.
255
a2042e78
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256PH/38 Despite being documented as not happening, Exim was rewriting addresses
257 in header lines that were in fact CNAMEs. This is no longer the case.
258
4fbcfc2e
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259PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
260 and queue runs started by the daemon processed all messages. This has
261 been fixed so that -R and -S can now usefully be given with -q<time>.
262
aa41d2de
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263PH/40 Import PCRE release 6.7 (fixes some bugs).
264
af561417
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265PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
266
3cc66b45
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267PH/42 Give an error if -q is specified more than once.
268
194cc0e4
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269PH/43 Renamed the variables $interface_address and $interface_port as
270 $received_ip_address and $received_port, to make it clear that these
271 values apply to message reception, and not to the outgoing interface when
272 a message is delivered. (The old names remain recognized, of course.)
273
a401ddaa
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274PH/44 There was no timeout on the connect() call when using a Unix domain
275 socket in the ${readsocket expansion. There now is.
276
4e88a19f
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277PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
278 be meaningful with "accept".
279
d7d7b289
SC
280SC/01 Eximstats V1.43
281 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
282
283SC/02 Eximstats V1.44
284 Use a glob alias rather than an array ref in the generated
285 parser. This improves both readability and performance.
286
287SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
288 Collect SpamAssassin and rejection statistics.
289 Don't display local sender or destination tables unless
290 there is data to show.
291 Added average volumes into the top table text output.
292
293SC/04 Eximstats V1.46
294 Collect data on the number of addresses (recipients)
295 as well as the number of messages.
296
297SC/05 Eximstats V1.47
298 Added 'Message too big' to the list of mail rejection
299 reasons (thanks to Marco Gaiarin).
300
301SC/06 Eximstats V1.48
302 Mainlog lines which have GMT offsets and are too short to
303 have a flag are now skipped.
304
305SC/07 Eximstats V1.49 (Alain Williams)
306 Added the -emptyok flag.
307
308SC/08 Eximstats V1.50
309 Fixes for obtaining the IP address from reject messages.
310
0ea2a468
JJ
311JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
312 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
313 whitesspace changes from 4.64-PH/27
314
315JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
316 match 4.64-PH/13
317
318JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
319 are found, allow negative numbers in numeric criteria)
320
321JJ/06 exipick.20061117.2, added new $message_body_missing variable
322
323JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
324 to match changes made in 4.64-PH/43
325
8a10f5a4
PH
326PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
327
30e18802
PH
328PH/47 Put in an explicit test for a DNS lookup of an address record where the
329 "domain" is actually an IP address, and force a failure. This locks out
330 those revolvers/nameservers that support "A-for-A" lookups, in
331 contravention of the specifications.
332
55728a4f
PH
333PH/48 When a host name was looked up from an IP address, and the subsequent
334 forward lookup of the name timed out, the host name was left in
335 $sender_host_name, contrary to the specification.
d7d7b289 336
d7837193
PH
337PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
338 restricted to single-key lookups, Exim was not diagnosing an error if
339 * or *@ was used with a query-style lookup.
340
87054a31
PH
341PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
342
ea2c01d2
MH
343MH/01 local_scan ABI version incremented to 1.1. It should have been updated
344 long ago, but noone interested enough thought of it. Let's just say that
345 the "1.1" means that there are some new functions that weren't there at
346 some point in the past.
347
944e9e9c 348
478be7b0
SC
349Exim version 4.63
350-----------------
351
352SC/01 Use a glob alias rather than an array ref in eximstats generated
353 parser. This improves both readability and performance.
354
355SC/02 Collect SpamAssassin and rejection statistics in eximstats.
356 Don't display local sender or destination tables in eximstats unless
357 there is data to show.
358 Added average volumes into the eximstats top table text output.
359
360SC/03 Collect data on the number of addresses (recipients) as well
361 as the number of messages in eximstats.
362
2b965a65
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363TF/01 Correct an error in the documentation for the redirect router. Exim
364 does (usually) call initgroups() when daemonizing.
478be7b0 365
45b91596
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366TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
367 with consistent privilege compared to when running as a daemon.
478be7b0 368
c59f5781
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369TF/03 Note in the spec that $authenticated_id is not set for local
370 submissions from trusted users.
371
90fc3069
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372TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
373 Thanks to Dean Brooks <dean@iglou.com> for the patch.
374
6083aca0
TF
375TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
376 by adding some example configuration directives to the default
377 configuration file. A little bit of work is required to uncomment the
378 directives and define how usernames and passwords are checked, but
379 there is now a framework to start from.
380
765b530f
PH
381PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
382 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
383 without this. I don't know how relevant this is to other LDAP libraries.
384
4e167a8c
PH
385PH/02 Add the verb name to the "unknown ACL verb" error.
386
4608d683
PH
387PH/03 Magnus Holmgren's patch for filter_prepend_home.
388
b8dc3e4a
PH
389PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
390
5418e93b
PH
391PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
392 directory not expanded when it should be if an expanded home directory
393 was set for the address (which is overridden by the transport).
394
b4a9bda2
PH
395PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
396 libradius.
397
45b91596
PH
398PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
399 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
400 because it is too late at that time, and has no effect.
401
5547e2c5
PH
402PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
403 security issue with \' (bugzilla #107). I could not use the
404 PQescapeStringConn() function, because it needs a PGconn value as one of
405 its arguments.
406
dbcef0ea
PH
407PH/08 When testing addresses using -bt, indicate those final addresses that
408 are duplicates that would not cause an additional delivery. At least one
409 person was confused, thinking that -bt output corresponded to deliveries.
410 (Suppressing duplicates isn't a good idea as you lose the information
411 about possibly different redirections that led to the duplicates.)
412
25257489
PH
413PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
414 systems where poll() doesn't work, in particular OS X.
415
c816d124
PH
416PH/10 Added more information to debugging output for retry time not reached.
417
a9ccd69a
PH
418PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
419 operations in malware.c.
420
75fa1910
PH
421PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
422 signatures.
423
a7d7aa58
PH
424PH/13 If write_rejectlog was set false when logging was sent to syslog with
425 syslog_duplication set false, log lines that would normally be written
426 both the the main log and to the reject log were not written to syslog at
427 all.
428
42119b09
PH
429PH/14 In the default configuration, change the use of "message" in ACL warn
430 statements to "add_header".
431
41609df5
PH
432PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
433 not followed by a command (e.g. "seen endif").
434
a5bd321b
PH
435PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
436 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
437 latter.
438
e85a7ad5 439PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
440 so that it is now:
441
e85a7ad5
PH
442 ${if or { \
443 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
444 { match{$h_precedence:}{(?i)bulk|list|junk} } \
445 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
446 }{no}{yes}}
447
e85a7ad5
PH
448 The Auto-Submitted: and various List- headers are standardised, whereas I
449 don't think Precedence: ever was.
5dff5817 450
d8fe1c03
PH
451PH/18 Refactored debugging code in route_finduser() to show more information,
452 in particular, the error code if getpwnam() issues one.
453
16282d2b
PH
454PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
455 This is apparently needed in addition to the PH/07 change above to avoid
456 any possible encoding problems.
457
35d40a98
PH
458PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
459 but not after initializing Perl.
460
034d99ab
PH
461PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
462 output them only if debugging. By default they are written stderr,
463 apparently, which is not desirable.
464
6ec97b1b
PH
465PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
466 queries.
467
e22ca4ac
JJ
468JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
469 --not options
470
471JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
472
33d73e3b
PH
473PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
474 authenticated or an ident call has been made. Suppress the default
475 values for $authenticated_id and $authenticated_sender (but permit -oMai
476 and -oMas) when testing with -bh.
477
9ecb03f3
PH
478PH/24 Re-jigged the order of the tests in the default configuration so that the
479 tests for valid domains and recipients precede the DNS black list and CSA
480 tests, on the grounds that those ones are more expensive.
481
084efe8d
PH
482PH/25 Exim was not testing for a space following SMTP commands such as EHLO
483 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
484 This bug exists in every version of Exim that I still have, right back to
485 0.12.
486
366fc9f0
PH
487PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
488 However, an attempt to turn on case-sensitivity in a regex key by
489 including (?-i) didn't work because the subject string was already
490 lowercased, and the effects were non-intuitive. It turns out that a
491 one-line patch can be used to allow (?-i) to work as expected.
492
c59f5781 493
c887c79e
TF
494Exim version 4.62
495-----------------
496
497TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
498 other effects) broke the use of negated acl sub-conditions.
499
1cce3af8
PH
500PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
501 patch).
502
afb3eaaf
PH
503PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
504 "Deny" causes Exim to reject the incoming connection with a 554 error.
505 Unfortunately, if there is a major crisis, such as a disk failure,
506 tcp-wrappers gives "deny", whereas what one would like would be some
507 kind of temporary error. A kludge has been added to help with this.
508 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
509 554 error is used if errno is still zero or contains ENOENT (which occurs
510 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
511 451 error is used.
512
e173618b
PH
513PH/03 Add -lutil to the default FreeBSD LIBS setting.
514
dd16e114
PH
515PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
516 errors. Otherwise a message that provokes a temporary error (when other
517 messages do not) can cause a whole host to time out.
518
f7fd3850
PH
519PH/05 Batch deliveries by appendfile and pipe transports did not work when the
520 addresses were routed directly to files or pipes from a redirect router.
521 File deliveries just didn't batch; pipe deliveries might have suffered
522 odd errors.
523
d87df92c
PH
524PH/06 A failure to get a lock for a hints database would erroneously always say
525 "Failed to get write lock", even when it was really a read lock.
526
7e9f683d
PH
527PH/07 The appendfile transport was creating MBX lock files with a fixed mode
528 of 0600. This has been changed to use the value of the lockfile_mode
529 option (which defaults to 0600).
530
bfad5236
PH
531PH/08 Applied small patch from the Sieve maintainer.
532
01c490df
PH
533PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
534 folder from quota calculations, a direct delivery into this folder messed
535 up the contents of the maildirsize file. This was because the regex was
536 used only to exclude .Trash (or whatever) when the size of the mailbox
537 was calculated. There was no check that a delivery was happening into an
538 excluded directory. This bug has been fixed by ignoring all quota
539 processing for deliveries into excluded directories.
540
d6629cdc
PH
541PH/10 Added the maildirfolder_create_regex option to appendfile.
542
1cce3af8 543
214e2000
PH
544Exim version 4.61
545-----------------
546
547PH/01 The code for finding all the local interface addresses on a FreeBSD
548 system running IPv6 was broken. This may well have applied to all BSD
549 systems, as well as to others that have similar system calls. The broken
550 code found IPv4 interfaces correctly, but gave incorrect values for the
551 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
552 that it would not match correctly against @[] and not recognize the IPv6
553 addresses as local.
554
f9daeae0
PH
555PH/02 The ipliteral router was not recognizing addresses of the form user@
556 [ipv6:....] because it didn't know about the "ipv6:" prefix.
557
7e66e54d
PH
558PH/03 Added disable_ipv6.
559
c8ea1597
PH
560PH/04 Changed $reply_address to use the raw form of the headers instead of the
561 decoded form, because it is most often used to construct To: headers
562 lines in autoreplies, and the decoded form may well be syntactically
563 invalid. However, $reply_address has leading white space removed, and all
564 newlines turned into spaces so that the autoreply transport does not
565 grumble.
566
911f6fde
PH
567PH/05 If group was specified without a user on a router, and no group or user
568 was specified on a transport, the group from the router was ignored.
569
47ca6d6c
PH
570PH/06 Increased the number of ACL variables to 20 of each type, and arranged
571 for visible compile-time settings that can be used to change these
572 numbers, for those that want even more. Backwards compatibility with old
573 spool files has been maintained. However, going back to a previous Exim
574 release will lost any variables that are in spool files.
575
ed0e9820
PH
576PH/07 Two small changes when running in the test harness: increase delay when
577 passing a TCP/IP connection to a new process, in case the original
578 process has to generate a bounce, and remove special handling of
579 127.0.0.2 (sic), which is no longer necessary.
580
eff37e47
PH
581PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
582 be the same on different OS.
583
1921d2ea
PH
584PH/09 Moved a debug statement in filter processing to avoid a race problem when
585 testing.
586
b3f69ca8
JJ
587JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
588 whether --show-vars was specified or not
589
590JJ/02 exipick: Added support for new ACL variable spool format introduced
591 in 4.61-PH/06
592
424a1c63
PH
593PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
594 syntactically invalid From: or Reply-to: line, and a filter used this to
595 generate an autoreply, and therefore failed to obtain an address for the
596 autoreply, Exim could try to deliver to a non-existent relative file
597 name, causing unrelated and misleading errors. What now happens is that
598 it logs this as a hard delivery error, but does not attempt to create a
599 bounce message.
600
7a100415
PH
601PH/11 The exinext utility has a -C option for testing purposes, but although
602 the given file was scanned by exinext itself; it wasn't being passed on
603 when Exim was called.
604
19b9dc85
PH
605PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
606 an end-of-file indication when reading a command response.
607
309bd837
PH
608PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
609 compiled. In many other places in Exim, IPv6 addresses are always
610 recognized, so I have changed this. It also means that IPv4 domain
611 literals of the form [IPV4:n.n.n.n] are now always recognized.
612
59e82a2a
PH
613PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
614 used if the router is not running as root, for example, when verifying at
615 ACL time, or when using -bh. The debugging output from this situation was
616 non-existent - all you got was a failure to exec. I have made two
617 changes:
618
619 (a) Failures to set uid/gid, the current directory, or a process leader
620 in a subprocess such as that created by queryprogram now generate
621 suitable debugging ouput when -d is set.
622
623 (b) The queryprogram router detects when it is not running as root,
624 outputs suitable debugging information if -d is set, and then runs
625 the subprocess without attempting to change uid/gid.
626
9edc04ce
PH
627PH/15 Minor change to Makefile for building test_host (undocumented testing
628 feature).
629
1349e1e5
PH
630PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
631 additional section of a DNS packet that returns MX or SRV records.
632 Instead, it always explicitly searches for A/AAAA records. This avoids
633 major problems that occur when a DNS server includes only records of one
634 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
635 fixed another bug: if SRV records were looked up and the corresponding
636 address records were *not* found in the additional section, the port
637 values from the SRV records were lost.
638
ea49d0e1
PH
639PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
640 using the correct key (the original address) when searching the retry
641 rules in order to find which one to use for generating the retry hint.
642
064a94c9
PH
643PH/18 If quota_warn_message contains a From: header, Exim now refrains from
644 adding the default one. Similarly, if it contains a Reply-To: header, the
645 errors_reply_to option, if set, is not used.
646
727071f8
PH
647PH/19 When calculating a retry time, Exim used to measure the "time since
648 failure" by looking at the "first failed" field in the retry record. Now
649 it does not use this if it is later than than the arrival time of the
650 message. Instead it uses the arrival time. This makes for better
651 behaviour in cases where some deliveries succeed, thus re-setting the
652 "first failed" field. An example is a quota failure for a huge message
653 when small messages continue to be delivered. Without this change, the
654 "time since failure" will always be short, possible causing more frequent
655 delivery attempts for the huge message than are intended.
dd16e114 656 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 657
f78eb7c6
PH
658PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
659 $1, $2, $3) because the numerical variables can be reset during some
660 expansion items (e.g. "match"), thereby losing the authentication data.
661
21c28500
PH
662PH/21 Make -bV show the size of off_t variables so that the test suite can
663 decide whether to run tests for quotas > 2G.
664
665PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
666 mailbox_size, and mailbox_filecount in the appendfile transport. If a
667 filecount value is greater than 2G or if a quota value is greater than 2G
668 on a system where the size of off_t is not greater than 4, a panic error
669 is given.
670
1688f43b
PH
671PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
672 never match. The debug and -bh output now contains an explicit error
673 message indicating a malformed IPv4 address or mask.
674
675PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
676 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
677 PH/23 above applies.
678
9675b384
PH
679PH/25 Do not write to syslog when running in the test harness. The only
680 occasion when this arises is a failure to open the main or panic logs
681 (for which there is an explicit test).
682
6a3f1455
PH
683PH/26 Added the /no_tell option to "control=freeze".
684
dac79d3e
PH
685PH/27 If a host name lookup failed very early in a connection, for example, if
686 the IP address matched host_lookup and the reverse lookup yielded a name
687 that did not have a forward lookup, an error message of the form "no IP
688 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
689 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 690
5977a0b3
PH
691PH/28 An enabling patch from MH: add new function child_open_exim2() which
692 allows the sender and the authenticated sender to be set when
693 submitting a message from within Exim. Since child_open_exim() is
694 documented for local_scan(), the new function should be too.
695
c91535f3
PH
696PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
697 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
698 results in an empty string is now treated as unset.
699
0d46a8c8
PH
700PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
701
278c6e6c
PH
702PH/31 Added sender_verify_fail logging option.
703
2cbb4081
PH
704PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
705 needed by RFC 822 but not by RFC 2822 was commented out. I have now
706 tidied the source and removed it altogether.
707
3eef829e
PH
708PH/33 When a queue run was abandoned because the load average was too high, a
709 log line was always written; now it is written only if the queue_run log
710 selector is set. In addition, the log line for abandonment now contains
711 information about the queue run such as the pid. This is always present
712 in "start" and "stop" lines but was omitted from the "abandon" line.
713
1ab95fa6
PH
714PH/34 Omit spaces between a header name and the colon in the error message that
715 is given when verify = headers_syntax fails (if there are lots of them,
716 the message gets confusing).
717
230205fc
PH
718PH/35 Change the default for dns_check_names_pattern to allow slashes within
719 names, as there are now some PTR records that contain slashes. This check
720 is only to protect against broken name servers that fall over on strange
721 characters, so the fact that it applies to all lookups doesn't matter.
722
75e0e026
PH
723PH/36 Now that the new test suite is complete, we can remove some of the
724 special code in Exim that was needed for the old test suite. For example,
725 sorting DNS records because real resolvers return them in an arbitrary
726 order. The new test suite's fake resolver always returns records in the
727 same order.
728
729PH/37 When running in the test harness, use -odi for submitted messages (e.g.
730 bounces) except when queue_only is set, to avoid logging races between
731 the different processes.
732
145396a6
PH
733PH/38 Panic-die if .include specifies a non-absolute path.
734
3cd34f13
PH
735PH/39 A tweak to the "H" retry rule from its user.
736
11121d3d
JJ
737JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
738 a label. They prevented compilation on older perls.
739
740JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
741 a warning to be raised on newish perls.
742
743JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
744 on queue. Changes to match documented behaviour of showing count of
745 messages matching specified criteria.
746
8def5aaf
PH
747PH/40 Changed the default ident timeout from 30s to 5s.
748
929ba01c
PH
749PH/41 Added support for the use of login_cap features, on those BSD systems
750 that have them, for controlling the resources used by pipe deliveries.
751
2632889e
PH
752PH/42 The content-scanning code uses fopen() to create files in which to put
753 message data. Previously it was not paying any attention to the mode of
754 the files. Exim runs with umask(0) because the rest of the code creates
755 files with open(), and sets the required mode explicitly. Thus, these
756 files were ending up world-writeable. This was not a big issue, because,
757 being within the spool directory, they were not world-accessible. I have
758 created a function called modefopen, which takes an additional mode
759 argument. It sets umask(777), creates the file, chmods it to the required
760 mode, then resets the umask. All the relevant calls to fopen() in the
761 content scanning code have been changed to use this function.
762
944a9c55
PH
763PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
764 to 24 hours. This avoids potential overflow problems when processing G
765 and H retry rules. I suspect nobody ever tinkers with this value.
766
4a23603b
PH
767PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
768
4730f942
PH
769PH/45 When the plaintext authenticator is running as a client, the server's
770 challenges are checked to ensure they are valid base64 strings. By
771 default, the authentication attempt is cancelled if an invalid string is
772 received. Setting client_ignore_invalid_base64 true ignores these errors.
773 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
774 they are received. Thus, the responses can be made to depend on the
775 challenges. If an invalid string is ignored, an empty string is placed in
776 the variable.
777
30dba1e6
PH
778PH/46 Messages that are created by the autoreply transport now contains a
779 References: header, in accordance with RFCs 2822 and 3834.
780
382afc6b
PH
781PH/47 Added authenticated_sender_force to the smtp transport.
782
a86229cf
PH
783PH/48 The ${prvs expansion was broken on systems where time_t was long long.
784
50c99ba6
PH
785PH/49 Installed latest patch from the Sieve maintainer.
786
d35e429d
PH
787PH/50 When an Exim quota was set without a file count quota, and mailbox_size
788 was also set, the appendfile transport was unnecessarily scanning a
789 directory of message files (e.g. for maildir delivery) to find the count
790 of files (along with the size), even though it did not need this
791 information. It now does the scan only if it needs to find either the
792 size of the count of files.
793
f90d018c
PH
794PH/51 Added ${time_eval: to convert Exim time strings into seconds.
795
75def545
PH
796PH/52 Two bugs concerned with error handling when the smtp transport is
797 used in LMTP mode:
798
799 (i) Exim was not creating retry information for temporary errors given
800 for individual recipients after the DATA command when the smtp transport
801 was used in LMTP mode. This meant that they could be retried too
802 frequently, and not timed out correctly.
803
804 (ii) Exim was setting the flag that allows error details to be returned
805 for LMTP errors on RCPT commands, but not for LMTP errors for individual
806 recipients that were returned after the DATA command.
807
808PH/53 This is related to PH/52, but is more general: for any failing address,
809 when detailed error information was permitted to be returned to the
810 sender, but the error was temporary, then after the final timeout, only
811 "retry timeout exceeded" was returned. Now it returns the full error as
812 well as "retry timeout exceeded".
813
c46782ef
PH
814PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
815 do this, and (what is worse) MTAs that accept it.
816
71fafd95
PH
817PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
818 will now be deprecated.
819
2c5db4fd
PH
820PH/56 New os.c-cygwin from the Cygwin maintainer.
821
9cf6b11a
JJ
822JJ/06 exipick: added --unsorted option to allow unsorted output in all output
823 formats (previously only available in exim formats via -bpr, -bpru,
824 and -bpra. Now also available in native and exiqgrep formats)
825
826JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
827 with very large, slow to parse queues
828
829JJ/08 exipick: added ! as generic prefix to negate any criteria format
830
831JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
832
898d150f
PH
833PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
834 responses to authentication challenges, though it was showing the
835 challenges; (ii) I've removed the CR characters from the debug output for
836 SMTP output lines.
837
46218253
PH
838PH/58 Allow for the insertion of a newline as well as a space when a string
839 is turned into more than one encoded-word during RFC 2047 encoding. The
840 Sieve code now uses this.
841
e97957bc
PH
842PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
843 data_4xx, lost_connection, tls_required.
844
81e509d7
PH
845PH/60 When a VRFY deferred or FAILED, the log message rather than the user
846 message was being sent as an SMTP response.
847
3d240ff7
PH
848PH/61 Add -l and -k options to exicyclog.
849
b37c4101
PH
850PH/62 When verifying, if an address was redirected to one new address, so that
851 verification continued, and the new address failed or deferred after
852 having set something in $address_data, the value of $address_data was not
853 passed back to the ACL. This was different to the case when no
854 redirection occurred. The value is now passed back in both cases.
855
79378e0f
PH
856PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
857 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
858 use login_cap.h, so on its own it isn't the distinguishing feature. The
859 new name refers directly to the setclassresources() function.
860
e49c7bb4
PH
861PH/65 Added configuration files for NetBSD3.
862
d114ec46
PH
863PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
864
f3d7df6c
PH
865PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
866 is preferred over IPv4.
867
715ab376
PH
868PH/68 The bounce_return_message and bounce_return_body options were not being
869 honoured for bounces generated during the reception of non-SMTP messages.
870 In particular, this applied to messages rejected by the ACL. This bug has
871 been fixed. However, if bounce_return_message is true and bounce_return_
872 body is false, the headers that are returned for a non-SMTP message
873 include only those that have been read before the error was detected.
874 (In the case of an ACL rejection, they have all been read.)
875
6b31b150
PH
876PH/69 The HTML version of the specification is now built in a directory called
877 spec_html instead of spec.html, because the latter looks like a path with
878 a MIME-type, and this confuses some software.
879
880PH/70 Catch two compiler warnings in sieve.c.
881
d515a917
PH
882PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
883 function verify_get_ident() calls ip_connect() to connect a socket, but
884 if the "connect()" function timed out, ip_connect() used to close the
885 socket. However, verify_get_ident() also closes the socket later, and in
886 between Exim writes to the log, which may get opened at this point. When
887 the socket was closed in ip_connect(), the log could get the same file
888 descriptor number as the socket. This naturally causes chaos. The fix is
889 not to close the socket in ip_connect(); the socket should be closed by
890 the function that creates it. There was only one place in the code where
891 this was missing, in the iplookup router, which I don't think anybody now
892 uses, but I've fixed it anyway.
893
9b8fadde
PH
894PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
895 well as to direct DNS lookups. Otherwise the handling of names in host
896 lists is inconsistent and therefore confusing.
897
214e2000 898
5de37277
PH
899Exim version 4.60
900-----------------
901
cc38ddbf
PH
902PH/01 Two changes to the default runtime configuration:
903
904 (1) Move the checks for relay_from_hosts and authenticated clients from
905 after to before the (commented out) DNS black list checks.
906
907 (2) Add control=submission to the relay_from_hosts and authenticated
908 clients checks, on the grounds that messages accepted by these
909 statements are most likely to be submissions.
5de37277 910
72fdd6ae
PH
911PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
912
913 (1) Generate an error if the third argument for the ${prvs expansion is
914 not a single digit.
915
916 (2) Treat a missing third argument of ${prvscheck as if it were an empty
917 string.
918
919 (3) Reset the variables that are obtained from the first argument of
920 ${prvscheck and used in the second argument before leaving the code,
921 because their memory is reclaimed, so using them afterwards may do
922 silly things.
923
924 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
925 one (it's much easier than Tom thought :-).
926
927 (5) Because of (4), we can now allow for the use of $prvscheck_result
928 inside the third argument.
cb9328de 929
cb741023
PH
930PH/03 For some reason, the default setting of PATH when running a command from
931 a pipe transport was just "/usr/bin". I have changed it to
932 "/bin:/usr/bin".
933
f174f16e
PH
934PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
935 anything to be listed in the output from -bV.
b2f5a032 936
c25242d7
PH
937PH/05 When a filter generated an autoreply, the entire To: header line was
938 quoted in the delivery log line, like this:
939
940 => >A.N.Other <ano@some.domain> <original@ddress> ...
941
942 This has been changed so that it extracts the operative address. There
943 may be more than one such address. If so, they are comma-separated, like
944 this:
945
946 => >ano@some.domain,ona@other.domain <original@ddress> ...
947
82c19f95
PH
948PH/06 When a client host used a correct literal IP address in a HELO or EHLO
949 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
950 not being looked up in the rDNS to get a host name, Exim was showing the
951 IP address twice in Received: lines, even though the IP addresses were
952 identical. For example:
953
954 Received: from [1.2.3.4] (helo=[1.2.3.4])
955
956 However, if the real host name was known, it was omitting the HELO data
957 if it matched the actual IP address. This has been tidied up so that it
958 doesn't show the same IP address twice.
959
d7ffbc12
PH
960PH/07 When both +timestamp and +memory debugging was on, the value given by
961 $tod_xxx expansions could be wrong, because the tod_stamp() function was
962 called by the debug printing, thereby overwriting the timestamp buffer.
963 Debugging no longer uses the tod_stamp() function when +timestamp is set.
964
9f526266
PH
965PH/08 When the original message was included in an autoreply transport, it
966 always said "this is a copy of the message, including all the headers",
967 even if body_only or headers_only was set. It now gives an appropriate
968 message.
969
87fcc8b9
PH
970PH/09 Applied a patch from the Sieve maintainer which:
971
972 o fixes some comments
973 o adds the (disabled) notify extension core
974 o adds some debug output for the result of if/elsif tests
975 o points to the current vacation draft in the documentation
976 and documents the missing references header update
977
978 and most important:
979
980 o fixes a bug in processing the envelope test (when testing
981 multiple envelope elements, the last element determinted the
982 result)
983
456682f5
PH
984PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
985 Electronic Mail") by including:
986
987 Auto-submitted: auto-generated
988
989 in the messages that it generates (bounce messages and others, such as
990 warnings). In the case of bounce messages for non-SMTP mesages, there was
991 also a typo: it was using "Auto_submitted" (underscore instead of
992 hyphen). Since every message generated by Exim is necessarily in response
993 to another message, thes have all been changed to:
994
995 Auto-Submitted: auto-replied
996
997 in accordance with these statements in the RFC:
998
999 The auto-replied keyword:
1000
1001 - SHOULD be used on messages sent in direct response to another
1002 message by an automatic process,
1003
1004 - MUST NOT be used on manually-generated messages,
1005
1006 - MAY be used on Delivery Status Notifications (DSNs) and Message
1007 Disposition Notifications (MDNs),
1008
1009 - MUST NOT be used on messages generated by automatic or periodic
1010 processes, except for messages which are automatic responses to
1011 other messages.
1012
3e46c1aa
PH
1013PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1014 to the default Received: header definition.
456682f5 1015
49826d12
PH
1016PH/12 Added log selector acl_warn_skipped (default on).
1017
eba0c039
PH
1018PH/13 After a successful wildlsearch lookup, discard the values of numeric
1019 variables because (a) they are in the wrong storage pool and (b) even if
1020 they were copied, it wouldn't work properly because of the caching.
1021
a0d6ba8a
PH
1022PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1023 checking when decoding. Apparently there are clients that generate
1024 overlong encoded strings. Why am I not surprised?
1025
f0917727
PH
1026PH/15 If the first argument of "${if match_address" was not empty, but did not
1027 contain an "@" character, Exim crashed. Now it writes a panic log message
1028 and treats the condition as false.
1029
096fee00
PH
1030PH/16 In autoreply, treat an empty string for "once" the same as unset.
1031
024bd3c2
PH
1032PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1033 extension "envelope-auth". The code is finished and in agreement with
1034 other implementations, but there is no documentation so far and in fact,
1035 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1036 not changing the active code.
1037
1038 Print executed "if" and "elsif" statements when debugging is used. This
1039 helps a great deal to understand what a filter does.
1040
1041 Document more things not specified clearly in RFC3028. I had all this
1042 sorted out, when out of a sudden new issues came to my mind. Oops."
1043
df199fec
PH
1044PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1045 (Bugzilla #53).
1046
d27f1df3
PH
1047PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1048 canonical form (as documented). However, after a host name lookup from
1049 the IP address, check_host() was doing a simple string comparison with
1050 addresses acquired from the DNS when checking that the found name did
1051 have the original IP as one of its addresses. Since any found IPv6
1052 addresses are likely to be in abbreviated form, the comparison could
1053 fail. Luckily, there already exists a function for doing the comparison
1054 by converting both addresses to binary, so now that is used instead of
1055 the text comparison.
1056
96776534
PH
1057PH/20 There was another similar case to PH/19, when a complete host name was
1058 given in a host list; looking up its IP address could give an abbreviated
1059 form, whereas the current host's name might or might not be abbreviated.
1060 The same fix has been applied.
1061
5de37277 1062
9a799bc0
PH
1063Exim version 4.54
1064-----------------
1065
1066PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1067 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1068 It now does.
1069
99a4b039
PH
1070PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1071 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1072
1073PH/03 Typo: missing ".o" in src/pcre/Makefile.
1074
4b233853
PH
1075PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1076 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1077 Also, for "Auto-Submitted", treat anything other than "no" as
1078 non-personal, in accordance with RFC 3834. (Previously it treated
1079 anything starting "auto-" as non-personal.)
1080
8857ccfd
PH
1081TF/01 The control=submission/name=... option had a problem with syntax
1082 errors if the name included a slash character. The /name= option
1083 now slurps the rest of the string, so it can include any characters
1084 but it must come last in the list of options (after /sender_retain
1085 or /domain=).
1086
433a2980
PH
1087PH/05 Some modifications to the interface to the fake nameserver for the new
1088 testing suite.
1089
3e46c1aa 1090
9a799bc0 1091
e3a311ba
TK
1092Exim version 4.53
1093-----------------
1094
1095TK/01 Added the "success_on_redirect" address verification option. See
1096 NewStuff for rationale and an example.
1097
13b685f9
PH
1098PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1099
395ff96d
PH
1100PH/02 Patch to exigrep to allow it to work on syslog lines.
1101
5b68f6e4
PH
1102PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1103 fread() to skip over the body file's header line, because in Cygwin the
1104 header line is locked and is inaccessible.
1105
1ab52c69
PH
1106PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1107 co-exist for some time) to make it clear that it is the Exim ID that is
1108 referenced, not the Message-ID: header line.
1109
b07e6aa3
PH
1110PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1111 string_format() function, because snprintf() does not exist on all
1112 operating systems.
1113
254e032f
PH
1114PH/06 The use of forbid_filter_existstest now also locks out the use of the
1115 ${stat: expansion item.
1116
3af76a81
PH
1117PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1118 protocol synchronization error", to keep the pedants happy.
1119
2548ba04
PH
1120PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1121 well as for IRIX systems, when gcc is being used. See the host.c source
1122 file for comments.
1123
b6c6011d
PH
1124PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1125
cf39cf57
PH
1126PH/10 Named domain lists were not working if used in a queue_smtp_domains
1127 setting.
1128
f1513293
PH
1129PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1130 transport and to the smtp transport in LMTP mode.
1131
727549a4
PH
1132TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1133
af46795e
PH
1134PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1135 run a filter in a subprocess. This could lead to confusion in subsequent
1136 lookups in the parent process. There should also be a search_tidyup() at
1137 the end of the subprocess.
1138
d7b47fd0
PH
1139PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1140 only if the host matched helo_try_verify_hosts, which caused the
1141 verification to occur when the EHLO/HELO command was issued. The ACL just
1142 tested the remembered result. Now, if a previous verification attempt has
1143 not happened, "verify = helo" does it there and then.
1144
ee744174
JJ
1145JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1146
b582ab87
PH
1147TK/03 Fix log output including CR from clamd.
1148
41a13e0a
PH
1149PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1150 exist provoked a memory error which could cause a segfault.
1151
f625cc5a
PH
1152PH/15 Installed PCRE 6.2
1153
1154PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1155
21f7af35
PH
1156PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1157 of the problem. Specifically, suggested +O2 rather than +O1 for the
1158 HP-UX compiler.
1159
31480e42
PH
1160PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1161
2d280592
PH
1162PH/20 If a delivery was routed to a non-standard port by means of an SRV
1163 record, the port was not correctly logged when the outgoing_port log
1164 selector was set (it logged the transort's default port).
1165
7cd1141b
PH
1166PH/21 Added support for host-specific ports to manualroute, queryprogram,
1167 fallback_hosts, and "hosts" in the smtp transport.
1168
1169PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1170 host errors such as "Connection refused".
1171
750af86e
PH
1172PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1173 authentication with radiusclient 0.4.9:
1174
1175 - Error returned from rc_read_config was caught wrongly
1176 - Username/password not passed on to radius server due to wrong length.
1177
1178 The presumption is that some radiusclient API changes for 4.51/PH/17
1179 were not taken care of correctly. The code is still untested by me (my
1180 Linux distribution still has 0.3.2 of radiusclient), but it was
1181 contributed by a Radius user.
1182
1183PH/24 When doing a callout, the value of $domain wasn't set correctly when
1184 expanding the "port" option of the smtp transport.
1185
4304270b
TK
1186TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1187 while reading a MIME header. Thanks to Tom Hughes for a patch.
1188
750af86e
PH
1189PH/24 Include config.h inside local_scan.h so that configuration settings are
1190 available.
1191
64ffc24f
PH
1192PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1193 that in an ACL for RCPT (for example), you can examine exactly what was
1194 received.
1195
5dd9625b
PH
1196PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1197 commands, but it was not correctly comparing the address with the actual
1198 client host address. Thus, it would show the EHLO address in Received:
1199 header lines when this was not necessary.
1200
5591031b
PH
1201PH/27 Added the % operator to ${eval:}.
1202
ba18e66a
PH
1203PH/28 Exim tries to create and chdir to its spool directory when it starts;
1204 it should be ignoring failures (because with -C, for example, it has lost
1205 privilege). It wasn't ignoring creation failures other than "already
1206 exists".
1207
9cec981f
PH
1208PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1209 -bV or -d is used.
1210
aa2b5c79
PH
1211PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1212 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1213 too many continuations, the temporary file was not being removed, and the
1214 return code was incorrect.
aa2b5c79 1215
48a53b7f
PH
1216PH/31 Missing "BOOL" in function definition in filtertest.c.
1217
1c59d63b
PH
1218PH/32 Applied Sieve patches from the maintainer.
1219
671012da
TK
1220TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1221
1509d3a8
PH
1222PH/33 Added "verify = not_blind".
1223
1224PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1225 Local/Makefile (with some defaults set). These are used in built scripts
1226 such as exicyclog, but they have never been used in the exim_install
1227 script (though there are many overriding facilities there). I have
1228 arranged that the exim_install script now takes note of these two
1229 settings.
1230
1231PH/35 Installed configuration files for Dragonfly.
1232
2fe1a124
PH
1233PH/36 When a locally submitted message by a trusted user did not contain a
1234 From: header, and the sender address was obtained from -f or from an SMTP
1235 MAIL command, and the trusted user did not use -F to supply a sender
1236 name, $originator_name was incorrectly used when constructing a From:
1237 header. Furthermore, $originator_name was used for submission mode
1238 messages from external hosts without From: headers in a similar way,
1239 which is clearly wrong.
1240
8800895a
PH
1241PH/37 Added control=suppress_local_fixups.
1242
ccfdb010
PH
1243PH/38 When log_selector = +received_sender was set, and the addition of the
1244 sender made the log line's construction buffer exactly full, or one byte
1245 less than full, an overflow happened when the terminating "\n" was
1246 subsequently added.
1247
1130bfb0
PH
1248PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1249 when the result of a list match is failure because a DNS lookup failed.
1250
ebcb507f
PH
1251PH/40 RM_COMMAND is now used in the building process.
1252
c35e155c
PH
1253PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1254 the "build-* directories that it finds.
1255
95d1f782
PH
1256PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1257 address in a domain literal was a prefix of an interface address.
1258
fd6de02e
PH
1259PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1260 when verifying a sender address, unless rewrite_headers is false.
1261
58de37c5
PH
1262PH/44 Wrote a long comment about why errors_to addresses are verified as
1263 recipients, not senders.
1264
261cf466
TF
1265TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1266 the ratelimit ACL was added.
1267
3ee512ff
PH
1268PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1269
e08c430f
PH
1270PH/46 Added extra information about PostgreSQL errors to the error string.
1271
bef5a11f
PH
1272PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1273 avoiding the need to install special zones in a real server. This is
1274 backwards compatible; if it can't find the fake resolver, it drops back.
1275 Thus, both old and new test suites can be run.
1276
7546de58
TF
1277TF/02 Added util/ratelimit.pl
1278
e5d5a95f
TF
1279TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1280 clock is set back in time.
1281
2e88a017
TF
1282TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1283 Candler <B.Candler@pobox.com>.
1284
a5f65aa4
TF
1285TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1286 OK for addresses that are the result of redirections.
1287
e7726cbf
PH
1288PH/48 A number of further additions for the benefit of the new test suite,
1289 including a fake gethostbyname() that interfaces to the fake DNS resolver
1290 (see PH/47 above).
1291
a7fdad5b
TF
1292TF/06 The fix for widen_domains has also been applied to qualify_single and
1293 search_parents which are the other dnslookup options that can cause
1294 header rewrites.
1295
6af56900
PH
1296PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1297 type ("H").
1298
0925ede6
PH
1299PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1300
66afa403
TF
1301TF/07 Exim produced the error message "an SRV record indicated no SMTP
1302 service" if it encountered an MX record with an empty target hostname.
1303 The message is now "an MX or SRV record indicated no SMTP service".
1304
0154e85a
TF
1305TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1306 if the DNS of the sending site is misconfigured. This is quite a
1307 common situation. This change restores the behaviour of treating a
1308 helo verification defer as a failure.
1309
16f12c76
PH
1310PH/51 If self=fail was set on a router, the bounce message did not include the
1311 actual error message.
1312
bbe902f0 1313
e5a9dba6
PH
1314Exim version 4.52
1315-----------------
1316
1317TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1318
22c3b60b
PH
1319PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1320 command itself ended in error, the underlying message about the transport
1321 filter timeout was being overwritten with the pipe command error. Now the
1322 underlying error message should be appended to the second error message.
1323
06a9b4b5
PH
1324TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1325
c1ac6996
PH
1326PH/02 Reduce the amount of output that "make" produces by default. Full output
1327 can still be requested.
1328
9c7a242c
PH
1329PH/03 The warning log line about a condition test deferring for a "warn" verb
1330 was being output only once per connection, rather than after each
1331 occurrence (because it was using the same function as for successful
1332 "warn" verbs). This seems wrong, so I have changed it.
1333
87ba3f5f
PH
1334TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1335 it should not have, which might have caused a crash in the right
1336 circumstances, but probably never did.
1337
1338PH/04 Installed a modified version of Tony Finch's patch to make submission
1339 mode fix the return path as well as the Sender: header line, and to
1340 add a /name= option so that you can make the user's friendly name appear
1341 in the header line.
1342
29aba418
TF
1343TF/03 Added the control = fakedefer ACL modifier.
1344
fe0dab11
TF
1345TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1346 Mark Lowes for thorough testing.
870f6ba8 1347
11d337a4
TK
1348TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1349
1350TK/03 Merged latest SRS patch from Miles Wilton.
1351
415c8f3b
PH
1352PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1353 with the definition in sysexits.h (which is #included earlier).
1354 Fortunately, Exim does not actually use EX_OK. The code used to try to
1355 preserve the sysexits.h value, by assumimg that macro definitions were
1356 scanned for macro replacements. I have been disabused of this notion,
1357 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1358
958541e9
PH
1359PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1360 in the smtp transport. When a block could not be written in a single
1361 write() function, the timeout was being re-applied to each part-write.
1362 This seems wrong - if the receiver was accepting one byte at a time it
1363 would take for ever. The timeout is now adjusted when this happens. It
1364 doesn't have to be particularly precise.
1365
c206415f
TK
1366TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1367 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1368
2a4be8f9
PH
1369PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1370 without a domain if the check to <postmaster@domain> fails.
1371
1cba11c5
SC
1372SC/01 Eximstats: added -xls and the ability to specify output files
1373 (patch written by Frank Heydlauf).
1374
1375SC/02 Eximstats: use FileHandles for outputing results.
1376
1377SC/03 Eximstats: allow any combination of xls, txt, and html output.
1378
1379SC/04 Eximstats: fixed display of large numbers with -nvr option
1380
1381SC/05 Eximstats: fixed merging of reports with empty tables.
1382
1383SC/06 Eximstats: added the -include_original_destination flag
1384
1385SC/07 Eximstats: removed tabs and trailing whitespace.
1386
1005d00e
TK
1387TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1388
1389TK/06 MBOX spool code: Add real "From " MBOX separator line
1390 so the .eml file is really in mbox format (even though
1391 most programs do not really care). Patch from Alex Miller.
1392
1393TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1394 The latter is generated from $received_to and is only set if the
1395 message has one envelope recipient. SA can use these headers,
1396 obviously out-of-the-box. Patch from Alex Miller.
1397
9b4768fa
PH
1398PH/08 The ${def test on a variable was returning false if the variable's
1399 value was "0", contrary to what the specification has always said!
1400 The result should be true unless the variable is empty.
1401
1402PH/09 The syntax error of a character other than { following "${if
1403 def:variable_name" (after optional whitespace) was not being diagnosed.
1404 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1405 accidental colon was present, for example, could give incorrect results.
1406
0d7eb84a
PH
1407PH/10 Tidied the code in a number of places where the st_size field of a stat()
1408 result is used (not including appendfile, where other changes are about
1409 to be made).
1410
1411PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1412 This involved changing a lot of size variables from int to off_t. It
1413 should work with maildirs and everything.
1414
40727bee
TK
1415TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1416 spamd dying while we are connected to it.
1417
554d2369
TF
1418TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1419 <jgh@wizmail.org>
1420
1f922db1
PH
1421PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1422 function for BDB 4.3.
1423
ef213c3b
PH
1424PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1425
8ac170f3
PH
1426PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1427 the sources for PCRE have been re-arranged and more files are now
1428 involved.
1429
b1c749bb
PH
1430PH/15 The code I had for printing potentially long long variables in PH/11
1431 above was not the best (it lost precision). The length of off_t variables
1432 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1433 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1434 to be "long long int" or "long int". This is needed for the internal
1435 formatting function string_vformat().
b1c749bb 1436
4aac9b49
PH
1437PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1438 the configuration file to be ":syslog", then the script "guesses" where
1439 the logs files are, rather than using the compiled in default. In our
1440 case the guess is not the same as the compiled default, so the script
1441 suddenly stopped working when I started to use syslog. The patch checks
1442 to see if log_file_path is "". If so, it attempts to read it from exim
1443 with no configuration file to get the compiled in version, before it
1444 falls back to the previous guessing code."
1445
294520c8
TK
1446TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1447 implementing BATV in an Exim configuration. See NewStuff for the gory
1448 details.
1449
5bd022fe
PH
1450PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1451 Makefile that are specific to HP-UX.
1452
90e9ce59
PH
1453PH/18 If the "use_postmaster" option was set for a recipient callout together
1454 with the "random" option, the postmaster address was used as the MAIL
1455 FROM address for the random test, but not for the subsequent recipient
1456 test. It is now used for both.
1457
5ea81592
PH
1458PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1459 patch removes a few documentation additions to RFC 3028, because the
1460 latest draft now contains them. It adds the new en;ascii-case comparator
1461 and a new error check for 8bit text in MIME parts. Comparator and
1462 require names are now matched exactly. I enabled the subaddress
1463 extension, but it is not well tested yet (read: it works for me)."
1464
c6c2dc1d
PH
1465PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1466 rework some of the code of TK/09 above to avoid the hardwired use of
1467 "%lld" and "long long". Replaced the call to snprintf() with a call to
1468 string_vformat().
1469
fffffe4c
PH
1470PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1471 records point to non-existent hosts", "retry timeout exceeded", and
1472 "retry time not reached for any host after a long failure period".
ca02eafb 1473
9a26b6b2
PH
1474PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1475 experimental DomainKeys support:
1476
1477 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1478 (2) On an error such as an illegally used "control", the wrong name for
1479 the control was given.
1480
1481 These problems did NOT occur unless DomainKeys support was compiled.
1482
4aee0225
PH
1483PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1484
32d668a5
PH
1485PH/24 Added ${if match_ip condition.
1486
8187c3f3
PH
1487PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1488 databases so that it will be absolutely obvious if a crash occurs in the
1489 DB library. This is a regular occurrence (often caused by mis-matched
1490 db.h files).
1491
ff790e47 1492PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1493 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1494 picked up on a user's system that detects such things. There doesn't seem
1495 to be a gcc warning option for this - only an attribute that has to be
1496 put on the function's prototype. It seems that in Fedora Core 4 they have
1497 set this on a number of new functions. No doubt there will be more in due
1498 course.
ff790e47 1499
5417f6d1
PH
1500PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1501 specify a transport. However, if an address that was verified by such a
1502 router was the subject of a callout, Exim crashed because it tried to
1503 read the rcpt_include_affixes from the non-existent transport. Now it
1504 just assumes that the setting of that option is false. This bug was
1505 introduced by 4.51/PH/31.
1506
59cf8544
PH
1507PH/28 Changed -d+all to exclude +memory, because that information is very
1508 rarely of interest, but it makes the output a lot bigger. People tend to
1509 do -d+all out of habit.
1510
e7ad8a65
PH
1511PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1512 code in os-type was giving problems when libc.so lives in lib64, like on
1513 x86_64 Fedora Core.
1514
ade42478
PH
1515PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1516 aren't the modern standard, and it seems that some systems' include files
1517 don't always have them. Exim was already checking for some of the newer
1518 ones like T_AAAA, and defining it itself. I've added checks for all the
1519 record types that Exim uses.
1520
182ad5cf
PH
1521PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1522 not automatically generating a new one, as it is supposed to. This
1523 prevented TLS from working. If the file did exist, but contained invalid
1524 data, a new version was generated, as expected. It was only the case of a
1525 non-existent file that was broken.
1526
b0d9fc80
TK
1527TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1528 with a change in libdomainkeys > 0.64.
1529
1530TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1531 from DNS. If the selector record carries the flag, it now has
1532 precedence over the domain-wide flag.
1533
1534TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1535
47c7a64a
PH
1536PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1537 the use of a port name that isn't defined in /etc/services) occurred, the
1538 message was deferred as in a normal delivery, and thus remained on the
1539 spool, instead of being failed because of the mua_wrapper setting. This
1540 is now fixed, and I tidied up some of the mua_wrapper messages at the
1541 same time.
1542
a388bce4
SC
1543SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1544 the messages in a hash of arrays rather than using individual hashes.
1545 This is a bit cleaner and results in dramatic memory savings, albeit
1546 at a slight CPU cost.
1547
1548SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1549 as requested by Marc Sherman.
1550
1551SC/10 Eximstats: added histograms for user specified patterns as requested
1552 by Marc Sherman.
1553
0793e4ed
SC
1554SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1555
c58b88df
PH
1556PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1557 fopen() in the content-scanning modules that did not already have it.
1558
e7ad8a65 1559
7982096b
PH
1560Exim version 4.51
1561-----------------
1562
1a46a8c5
PH
1563TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1564 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1565
2f079f46 1566TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1567
1568TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1569
1570PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1571 to test Sieve filters that use "vacation".
1572
1573PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1574 that changes the way the GnuTLS parameters are stored in the cache file.
1575 The new format can be generated externally. For backward compatibility,
1576 if the data in the cache doesn't make sense, Exim assumes it has read an
1577 old-format file, and it generates new data and writes a new file. This
1578 means that you can't go back to an older release without removing the
1579 file.
1580
1581PH/03 A redirect router that has both "unseen" and "one_time" set does not
1582 work if there are any delivery delays because "one_time" forces the
1583 parent to be marked "delivered", so its unseen clone is never tried
1584 again. For this reason, Exim now forbids the simultaneous setting of
1585 these two options.
1586
1587PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1588 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1589 entry if you want to know the details. The fix, however, neglected to
1590 consider the case when local delivery batching is involved. The test for
1591 "previously delivered" was not happening when checking to see if an
1592 address could be batched with a previous (undelivered) one; under
1593 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1594 address.
1a46a8c5
PH
1595
1596PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1597 in its include files, and this causes problems building Exim.
1598
1599PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1600 header_syntax) but Exim was just ignoring anything given after a slash.
1601 In particular, this caused confusion with an attempt to use "verify =
1602 reverse_host_lookup/defer_ok". An error is now given when options are
1603 supplied for verify items that do not have them. (Maybe reverse_host_
1604 lookup should have a defer_ok option, but that's a different point.)
1605
1606PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1607 defined by RFC 821) to 2048, because there were problems with some AUTH
1608 commands, and RFC 1869 says the size should be increased for extended
1609 SMTP commands that take arguments.
1610
1611PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1612 Finch).
1613
1614PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1615 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1616
49c2d5ea
PH
1617PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1618 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1619 whatever). Otherwise the password may appear in the log. Following change
1620 PH/42 below, there is no longer a chance of it appearing in a bounce
1621 message.
49c2d5ea 1622
bf759a8b
PH
1623PH/11 Installed exipick version 20050225.0 from John Jetmore.
1624
83364d30
PH
1625PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1626 of its addresses was ever tried. (Bugzilla bug #2.)
1627
7999bbd7
PH
1628PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1629 the result incorrectly in the debug output. (It correctly added a newline
1630 to what was transported.)
1631
7dbf77c9
PH
1632TF/01 Added $received_time.
1633
74e0617f
PH
1634PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1635 commented out examples of how to interface to a virus scanner and to
1636 SpamAssassin. Also added commented examples of av_scanner and
1637 spamd_address settings.
1638
2f079f46
PH
1639PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1640 and controls are allowed in which ACLs. There were a couple of minor
1641 errors. Some of the entries in the conditions table (which is a table of
1642 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1643 negation of where the condition IS allowed.
1644
8c841523
PH
1645PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1646
7766a4f0
PH
1647PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1648 header file does not have a version number, so I've had to invent a new
1649 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1650 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1651 radiusclient), but it was contributed by a Radius user.
1652
8b417f2c
PH
1653PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1654 files or directories, for OpenSSL.
1655
901f42cb
PH
1656PH/19 When an Exim process that is running as root has to create an Exim log
1657 file, it does so in a subprocess that runs as exim:exim so as to get the
1658 ownership right at creation (otherwise, other Exim processes might see
1659 the file with the wrong ownership). There was no test for failure of this
1660 fork() call, which would lead to the process getting stuck as it waited
1661 for a non-existent subprocess. Forks do occasionally fail when resources
1662 run out. I reviewed all the other calls to fork(); they all seem to check
1663 for failure.
1664
f9b9210e
PH
1665PH/20 When checking for unexpected SMTP input at connect time (before writing
1666 the banner), Exim was not dealing correctly with a non-positive return
1667 from the read() function. If the client had disconnected by this time,
1668 the result was a log entry for a synchronization error with an empty
1669 string after "input=" when read() returned zero. If read() returned -1
1670 (an event I could not check), uninitialized data bytes were printed.
1671 There were reports of junk text (parts of files, etc) appearing after
1672 "input=".
1673
54cdb463
PH
1674PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1675
cf00dad6
PH
1676PH/22 Added support for macro redefinition, and (re)definition in between
1677 driver and ACL definitions.
1678
acb1b346
PH
1679PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1680 forgetting to use the resulting value; it was using the unexpanded value.
1681
c5ddb310
PH
1682PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1683 hadn't been configured. The fix is from Juergen Kreileder, who
1684 understands it better than I do:
1685
1686 "Here's what I see happening with three configured cyrus_sasl
1687 authenticators configured (plain, login, cram-md5):
1688
1689 On startup auth_cyrus_sasl_init() gets called for each of these.
1690 This means three calls to sasl_listmech() without a specified mech_list.
1691 => SASL tests which mechs of all available mechs actually work
1692 => three warnings about OTP not working
1693 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1694
1695 With the patch, sasl_listmech() also gets called three times. But now
1696 SASL's mech_list option is set to the server_mech specified in the the
1697 authenticator. Or in other words, the answer from sasl_listmech()
1698 gets limited to just the mech you're testing for (which is different
1699 for each call.)
1700 => the return list contains just 'plain' or 'login', 'cram-md5' or
1701 nothing depending on the value of ob->server_mech.
1702
1703 I've just tested the patch: Authentication still works fine,
1704 unavailable mechs specified in the exim configuration are still
1705 caught, and the auth.log warnings about OTP are gone."
1706
31619da6
PH
1707PH/25 When debugging is enabled, the contents of the command line are added
1708 to the debugging output, even when log_selector=+arguments is not
1709 specified.
1710
bebaf0fc
PH
1711PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1712 answer is "GNU", and only if the return is "GNU/something" is the answer
1713 "Linux".
1714
475fe28a
PH
1715PH/27 $acl_verify_message is now set immediately after the failure of a
1716 verification in an ACL, and so is available in subsequent modifiers. In
1717 particular, the message can be preserved by coding like this:
1718
1719 warn !verify = sender
1720 set acl_m0 = $acl_verify_message
1721
1722 Previously, $acl_verify_message was set only while expanding "message"
1723 and "log_message" when a very denied access.
1724
7e8bec7a
PH
1725PH/28 Modified OS/os.c-Linux with
1726
1727 -#ifndef OS_LOAD_AVERAGE
1728 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1729
1730 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1731 nomenclature these days.)
1732
e4a89c47
PH
1733PH/29 Installed patch from the Sieve maintainer that adds the options
1734 sieve_useraddress and sieve_subaddress to the redirect router.
1735
5ca2a9a1
PH
1736PH/30 In these circumstances:
1737 . Two addresses routed to the same list of hosts;
1738 . First host does not offer TLS;
1739 . First host accepts first address;
1740 . First host gives temporary error to second address;
1741 . Second host offers TLS and a TLS session is established;
1742 . Second host accepts second address.
1743 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1744 and peerdn, if requested) that were in fact used only for the second
1745 address.
7e8bec7a 1746
c688b954
PH
1747PH/31 When doing a callout as part of verifying an address, Exim was not paying
1748 attention to any local part prefix or suffix that was matched by the
1749 router that accepted the address. It now behaves in the same way as it
1750 does for delivery: the affixes are removed from the local part unless
1751 rcpt_include_affixes is set on the transport.
1752
fed77020
PH
1753PH/32 Add the sender address, as F=<...>, to the log line when logging a
1754 timeout during the DATA phase of an incoming message.
1755
7fe1560f
PH
1756PH/33 Sieve envelope tests were broken for match types other than :is. I have
1757 applied a patch sanctioned by the Sieve maintainer.
c688b954 1758
ebb6e6d5
PH
1759PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1760 the uid or gid is negative. A case of a negative gid caused this to be
1761 noticed. The fix allows for either to be negative.
1762
9c4e8f60
PH
1763PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1764 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1765 overlooked.
1766
1767PH/36 The change PH/12 above was broken. Fixed it.
1768
d7174846
PH
1769PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1770 the grounds that routing the same address twice would always produce the
1771 same answer. This might have been true once, but it is certainly no
1772 longer true now. Routing a child address may depend on the previous
1773 routing that produced that child. Some complicated redirection strategies
1774 went wrong when messages had multiple recipients, and made Exim's
1775 behaviour dependent on the order in which the addresses were given.
1776
1777 I have moved the duplicate checking until after the routing is complete.
1778 Exim scans the addresses that are assigned to local and remote
1779 transports, and removes any duplicates. This means that more work will be
1780 done, as duplicates will always all be routed, but duplicates are
1781 presumably rare, so I don't expect this is of any significance.
1782
1783 For deliveries to pipes, files, and autoreplies, the duplicate checking
1784 still happens during the routing process, since they are not going to be
1785 routed further.
1786
cfe75fc3
PH
1787PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1788 It corrects a timeout issue with spamd. This is Ian's comment: "The
1789 background is that sometimes spamd either never reads data from a
1790 connection it has accepted, or it never writes response data. The exiscan
1791 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1792 blindly assumes that writes won't block so it may never time out."
1793
be22d70e
PH
1794PH/39 Allow G after quota size as well as K and M.
1795
0612b098
PH
1796PH/40 The value set for $authenticated_id in an authenticator may not contain
1797 binary zeroes or newlines because the value is written to log lines and
1798 to spool files. There was no check on this. Now the value is run through
1799 the string_printing() function so that such characters are converted to
1800 printable escape sequences.
1801
2e0c1448
PH
1802PH/41 $message_linecount is a new variable that contains the total number of
1803 lines in the message. Compare $body_linecount, which is the count for the
1804 body only.
1805
447d236c
PH
1806PH/42 Exim no longer gives details of delivery errors for specific addresses in
1807 bounce and delay warning messages, except in certain special cases, which
1808 are as follows:
1809
1810 (a) An SMTP error message from a remote host;
1811 (b) A message specified in a :fail: redirection;
1812 (c) A message specified in a "fail" command in a system filter;
1813 (d) A message specified in a FAIL return from the queryprogram router;
1814 (e) A message specified by the cannot_route_message router option.
1815
1816 In these cases only, Exim does include the error details in bounce and
1817 warning messages. There are also a few cases where bland messages such
1818 as "unrouteable address" or "local delivery error" are given.
1819
d20976dc
PH
1820PH/43 $value is now also set for the "else" part of a ${run expansion.
1821
f656d135
PH
1822PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1823 being worked on, but at least Exim now implements the latest version to
1824 play with."
1825
2e2a30b4
PH
1826PH/45 In a pipe transport, although a timeout while waiting for the pipe
1827 process to complete was treated as a delivery failure, a timeout while
1828 writing the message to the pipe was logged, but erroneously treated as a
1829 successful delivery. Such timeouts include transport filter timeouts. For
1830 consistency with the overall process timeout, these timeouts are now
1831 treated as errors, giving rise to delivery failures by default. However,
1832 there is now a new Boolean option for the pipe transport called
1833 timeout_defer, which, if set TRUE, converts the failures into defers for
1834 both kinds of timeout. A transport filter timeout is now identified in
1835 the log output.
1836
9176e9f0
PH
1837PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1838 systems where "make" and "gmake" are different, calling "gmake" at top
1839 level broke things. I've arranged for the value of $(MAKE) to be passed
1840 from the Makefile to this script so that it can call the same version of
1841 "make".
1842
7982096b 1843
bbe902f0
PH
1844A note about Exim versions 4.44 and 4.50
1845----------------------------------------
1846
1847Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1848changes of various kinds. As a consequence, a big documentation update was
1849needed. This delayed the release for rather longer than seemed good, especially
1850in the light of a couple of (minor) security issues. Therefore, the changes
1851that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1852release. So 4.44 and 4.50 are in effect two different branches that both start
1853from 4.43.
1854
1855I have left the 4.50 change log unchanged; it contains all the changes since
18564.43. The change log for 4.44 is below; many of its items are identical to
1857those for 4.50. This seems to be the most sensible way to preserve the
1858historical information.
1859
1860
f7b63901 1861Exim version 4.50
495ae4b0
PH
1862-----------------
1863
5fe762f6
PH
1864 1. Minor wording change to the doc/README.SIEVE file.
1865
139059f6 1866 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1867 computation of the current number of files was incorrect.
495ae4b0 1868
7086e875
PH
1869 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1870 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1871 place.
1872
35af9f61
PH
1873 4. Give more explanation in the error message when the command for a transport
1874 filter fails to execute.
1875
b668c215
PH
1876 5. There are several places where Exim runs a non-Exim command in a
1877 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1878 was being done only for the command run by the queryprogram router. It is
1879 now done for all such subprocesses. The other cases are: ${run, transport
1880 filters, and the commands run by the lmtp and pipe transports.
1881
a494b1e1
PH
1882 6. Added CONFIGURE_GROUP build-time option.
1883
1884 7. Some older OS have a limit of 256 on the maximum number of file
1885 descriptors. Exim was using setrlimit() to set 1000 as a large value
1886 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1887 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1888
c5fcb476
PH
1889 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1890 was an oversight, and furthermore, ever since the addition of extra
1891 controls (e.g. 4.43/32), the checks on when to allow different forms of
1892 "control" were broken. There should now be diagnostics for all cases when a
1893 control that does not make sense is encountered.
1894
69358f02
PH
1895 9. Added the /retain_sender option to "control=submission".
1896
5be20824
PH
189710. $recipients is now available in the predata ACL (oversight).
1898
eb2c0248
PH
189911. Tidy the search cache before the fork to do a delivery from a message
1900 received from the command line. Otherwise the child will trigger a lookup
1901 failure and thereby defer the delivery if it tries to use (for example) a
1902 cached ldap connection that the parent has called unbind on.
1903
2a3eea10
PH
190412. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1905 of $address_data from the recipient verification was clobbered by the
1906 sender verification.
1907
190813. The value of address_data from a sender verification is now available in
1909 $sender_address_data in subsequent conditions in the ACL statement.
1910
23c7ff99
PH
191114. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1912
4deaf07d
PH
191315. Added a new option "connect=<time>" to callout options, to set a different
1914 connection timeout.
1915
926e1192
PH
191616. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1917 was its contents. (It was OK if the option was not defined at all.)
1918
650edc6f
PH
191917. A "Completed" log line is now written for messages that are removed from
1920 the spool by the -Mrm option.
1921
2c7db3f5
PH
192218. New variables $sender_verify_failure and $recipient_verify_failure contain
1923 information about exactly what failed.
1924
3d235903
PH
192519. Added -dd to debug only the daemon process.
1926
7c7ad977
PH
192720. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1928 handles timeouts, both on the server side and network timeouts. Renamed the
1929 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1930
981756db
PH
193121. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1932 It is now set to "smtps".
1933
d4eb88df
PH
193422. $host_address is now set to the target address during the checking of
1935 ignore_target_hosts.
1936
193723. When checking ignore_target_hosts for an ipliteral router, no host name was
1938 being passed; this would have caused $sender_host_name to have been used if
1939 matching the list had actually called for a host name (not very likely,
1940 since this list is usually IP addresses). A host name is now passed as
1941 "[x.x.x.x]".
1942
7d468ab8
PH
194324. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1944 code that specifies a non-restarting handler (typically sigaction() in
1945 modern systems) in an attempt to fix a rare and obscure crash bug.
1946
194725. Narrowed the window for a race in the daemon that could cause it to ignore
1948 SIGCHLD signals. This is not a major problem, because they are used only to
1949 wake it up if nothing else does.
1950
62c0818f
PH
195126. A malformed maildirsize file could cause Exim to calculate negative values
1952 for the mailbox size or file count. Odd effects could occur as a result.
1953 The maildirsize information is now recalculated if the size or filecount
1954 end up negative.
1955
26034054
PH
195627. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1957 support for a long time. Removed HAVE_SYS_VFS_H.
1958
af66f652
PH
195928. Installed the latest version of exipick from John Jetmore.
1960
90af77f4
PH
196129. In an address list, if the pattern was not a regular expression, an empty
1962 subject address (from a bounce message) matched only if the pattern was an
1963 empty string. Non-empty patterns were not even tested. This was the wrong
1964 because it is perfectly reasonable to use an empty address as part of a
1965 database query. An empty address is now tested by patterns that are
1966 lookups. However, all the other forms of pattern expect the subject to
1967 contain a local part and a domain, and therefore, for them, an empty
1968 address still always fails if the pattern is not itself empty.
1969
d8ef3577
PH
197030. Exim went into a mad DNS loop when attempting to do a callout where the
1971 host was specified on an smtp transport, and looking it up yielded more
1972 than one IP address.
1973
5cb8cbc6
PH
197431. Re-factored the code for checking spool and log partition space into a
1975 function that finds that data and another that does the check. The former
1976 is then used to implement four new variables: $spool_space, $log_space,
1977 $spool_inodes, and $log_inodes.
1978
14702f5b
PH
197932. The RFC2047 encoding function was originally intended for short strings
1980 such as real names; it was not keeping to the 75-character limit for
1981 encoded words that the RFC imposes. It now respects the limit, and
1982 generates multiple encoded words if necessary. To be on the safe side, I
1983 have increased the buffer size for the ${rfc2047: expansion operator from
1984 1024 to 2048 bytes.
1985
063b1e99
PH
198633. It is now permitted to omit both strings after an "if" condition; if the
1987 condition is true, the result is "true". As before, when the second string
1988 is omitted, a false condition yields an empty string. This makes it less
1989 cumbersome to write custom ACL and router conditions.
1990
652e1b65
PH
199134. Failure to deliver a bounce message always caused it to be frozen, even if
1992 there was an errors_to setting on the router. The errors_to setting is now
1993 respected.
1994
6f0c9a4f
PH
199535. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1996 canonical form (fully expanded) before being placed in
1997 $sender_host_address.
1998
33397d19
PH
199936. The table in the code that translates DNS record types into text (T_A to
2000 "A" for instance) was missing entries for NS and CNAME. It is just possible
2001 that this could have caused confusion if both these types were looked up
2002 for the same domain, because the text type is used as part of Exim's
2003 per-process caching. But the chance of anyone hitting this buglet seems
2004 very small.
2005
7bb56e1f
PH
200637. The dnsdb lookup has been extended in a number of ways.
2007
2008 (1) There is a new type, "zns", which walks up the domain tree until it
2009 finds some nameserver records. It should be used with care.
2010
ea3bc19b
PH
2011 (2) There is a new type, "mxh", which is like "mx" except that it returns
2012 just the host names, not the priorities.
2013
2014 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2015 looked up. The behaviour when one of the lookups defers can be
2016 controlled by a keyword.
7bb56e1f 2017
ea3bc19b 2018 (4) It is now possible to specify the separator character for use when
7bb56e1f 2019 multiple records are returned.
33397d19 2020
0bcb2a0e
PH
202138. The dnslists ACL condition has been extended: it is now possible to supply
2022 a list of IP addresses and/or domains to be looked up in a particular DNS
2023 domain.
2024
2ac0e484
PH
202539. Added log_selector=+queue_time_overall.
2026
4e1fde53
PH
202740. When running the queue in the test harness, wait just a tad after forking a
2028 delivery process, to get repeatability of debugging output.
2029
de365ded
PH
203041. Include certificate and key file names in error message when GnuTLS fails
2031 to set them up, because the GnuTLS error message doesn't include the name
2032 of the failing file when there is a problem reading it.
2033
f05da2e8
PH
203442. Allow both -bf and -bF in the same test run.
2035
d6453af2
PH
203643. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2037
f7b63901
PH
203844. The "Exiscan patch" is now merged into the mainline Exim source.
2039
204045. Sometimes the final signoff response after QUIT could fail to get
2041 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2042 < 0 before doing a fflush(). This bug looks as though it goes back to the
2043 introduction of TLS in release 3.20, but "sometimes" must have been rare
2044 because the tests only now provoked it.
2045
a444213a
PH
204646. Reset the locale to "C" after calling embedded Perl, in case it was changed
2047 (this can affect the format of dates).
2048
0ec020ea
PH
204947. exim_tidydb, when checking for the continued existence of a message for
2050 which it has found a message-specific retry record, was not finding
2051 messages that were in split spool directories. Consequently, it was
2052 deleting retry records that should have stayed in existence.
2053
b1206957
PH
205448. Steve fixed some bugs in eximstats.
2055
205649. The SPA authentication driver was not abandoning authentication and moving
2057 on to the next authenticator when an expansion was forced to fail,
2058 contradicting the general specification for all authenticators. Instead it
2059 was generating a temporary error. It now behaves as specified.
2060
26dd5a95
PH
206150. The default ordering of permitted cipher suites for GnuTLS was pessimal
2062 (the order specifies the preference for clients). The order is now AES256,
2063 AES128, 3DES, ARCFOUR128.
2064
343b2385
PH
206551. Small patch to Sieve code - explicitly set From: when generating an
2066 autoreply.
2067
1c5466b9
PH
206852. Exim crashed if a remote delivery caused a very long error message to be
2069 recorded - for instance if somebody sent an entire SpamAssassin report back
2070 as a large number of 550 error lines. This bug was coincidentally fixed by
2071 increasing the size of one of Exim's internal buffers (big_buffer) that
2072 happened as part of the Exiscan merge. However, to be on the safe side, I
2073 have made the code more robust (and fixed the comments that describe what
2074 is going on).
2075
55ee9ee3
PH
207653. Now that there can be additional text after "Completed" in log lines (if
2077 the queue_time_overall log selector is set), a one-byte patch to exigrep
2078 was needed to allow it to recognize "Completed" as not the last thing in
2079 the line.
2080
d38f8232
PH
208154. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2082 patch that reportedly fixes this has been added. I am not expert enough to
2083 create a test for it. This is what the patch creator wrote:
2084
2085 "I found a little strange behaviour of ldap code when working with
2086 Windows 2003 AD Domain, where users was placed in more than one
2087 Organization Units. When I tried to give exim partial DN, the exit code
2088 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2089 But simultaneously result of request was absolutely normal ldap result,
2090 so I produce this patch..."
2091
3295e65b
PH
2092 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2093 REFERENCE, so I have modified the code to exclude the patch when that macro
2094 is not defined.
2095
7102e136
PH
209655. Some experimental protocols are using DNS PTR records for new purposes. The
2097 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2098 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2099 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2100 CAN-2005-0021
7102e136 2101
3ca0ba97
PH
210256. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2103
c2bcbe20
PH
210457. Double the size of the debug message buffer (to 2048) so that more of very
2105 long debug lines gets shown.
2106
18ce445d
PH
210758. The exicyclog utility now does better if the number of log files to keep
2108 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2109
1f5b4c3d
PH
211059. Two changes related to the smtp_active_hostname option:
2111
2112 (1) $smtp_active_hostname is now available as a variable.
2113 (2) The default for smtp_banner uses $smtp_active_hostname instead
2114 of $primary_hostname.
2115
b975ba52
PH
211660. The host_aton() function is supposed to be passed a string that is known
2117 to be a valid IP address. However, in the case of IPv6 addresses, it was
2118 not checking this. This is a hostage to fortune. Exim now panics and dies
2119 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2120 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2121 components; fortuitously, this particular loophole had already been fixed
2122 by change 4.50/55 above.
2123
2124 If there are any other similar loopholes, the new check in host_aton()
2125 itself should stop them being exploited. The report I received stated that
2126 data on the command line could provoke the exploit when Exim was running as
2127 exim, but did not say which command line option was involved. All I could
2128 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2129 running as the user.
ea3a6f44 2130 CAN-2005-0021
85b87bc2
PH
2131
213261. There was a buffer overflow vulnerability in the SPA authentication code
2133 (which came originally from the Samba project). I have added a test to the
2134 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2135 CAN-2005-0022
b975ba52 2136
17ffcae7
PH
213762. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2138 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2139
d95f9fdb
PH
214063. The daemon start-up calls getloadavg() while still root for those OS that
2141 need the first call to be done as root, but it missed one case: when
2142 deliver_queue_load_max is set with deliver_drop_privilege. This is
2143 necessary for the benefit of the queue runner, because there is no re-exec
2144 when deliver_drop_privilege is set.
2145
86b8287f
PH
214664. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2147 This has been fixed.
2148
60dc5e56
PH
214965. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2150 was in use, was not putting the data itself into the right store pool;
2151 consequently, it could be overwritten for a subsequent message in the same
2152 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2153 the caching.)
2154
533244af
PH
215566. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2156
a5a28604
PH
215767. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2158 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2159 the function were treating the return as a boolean value, which happened to
2160 work because 0=false and not-0=true, but is not correct code.
2161
7e634d24
PH
216268. The host_aton() function was not handling scoped IPv6 addresses (those
2163 with, for example, "%eth0" on the end) correctly.
2164
3e11c26b
PH
216569. Fixed some compiler warnings in acl.c for the bitmaps specified with
2166 negated items (that is, ~something) in unsigned ints. Some compilers
2167 apparently mutter when there is no cast.
2168
6729cf78
PH
216970. If an address verification called from an ACL failed, and did not produce a
2170 user-specific message (i.e. there was only a "system" message), nothing was
2171 put in $acl_verify_message. In this situation, it now puts the system
2172 message there.
2173
00f00ca5
PH
217471. Change 4.23/11 added synchronization checking at the start of an SMTP
2175 session; change 4.31/43 added the unwanted input to the log line - except
2176 that it did not do this in the start of session case. It now does.
2177
c9bdd01c
PH
217872. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2179 This is wrong and can cause the other end to generate a synchronization
2180 error if it is another Exim or anything else that does the synchronization
2181 check. A QUIT command is no longer sent after a timeout.
2182
d43194df
PH
218373. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2184 during host lookups.
2185
fe5b5d0b
PH
218674. The defer_ok option of callout verification was not working if it was used
2187 when verifying addresses in header lines, that is, for this case:
2188
2189 verify = header_sender/callout=defer_ok
2190
76a2d7ba
PH
219175. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2192 those file descriptors could be used for SMTP connections. If anything
2193 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2194 could be sent to the SMTP client, causing chaos. The daemon now opens
2195 stdin, stdout, and stderr to /dev/null when it puts itself into the
2196 background.
2197
219876. Arrange for output from Perl's "warn" command to be written to Exim's main
2199 log by default. The user can override this with suitable Perl magic.
2200
04f7d5b9
PH
220177. The use of log_message on a "discard" ACL verb, which is supposed to add to
2202 the log message when discard triggers, was not working for the DATA ACL or
2203 for the non-SMTP ACL.
2204
bc60667e
PH
220578. Error message wording change in sieve.c.
2206
bb6e88ff
PH
220779. If smtp_accept_max_per_host was set, the number of connections could be
2208 restricted to fewer than expected, because the daemon was trying to set up
2209 a new connection before checking whether the processes handling previous
2210 connections had finished. The check for completed processes is now done
2211 earlier. On busy systems, this bug wouldn't be noticed because something
2212 else would have woken the daemon, and it would have reaped the completed
2213 process earlier.
2214
1e70f85b
PH
221580. If a message was submitted locally by a user whose login name contained one
2216 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2217 It caused a spool format error. I have fixed the spool reading code. A
2218 related problem was that the "from" clause in the Received: line became
2219 illegal because of the space(s). It is now covered by ${quote_local_part.
2220
222181. Included the latest eximstats from Steve (adds average sizes to HTML Top
2222 tables).
2223
4e01f9d6
PH
222482. Updated OS/Makefile-AIX as per message from Mike Meredith.
2225
1ee1cef2
PH
222683. Patch from Sieve maintainer to fix unterminated string problem in
2227 "vacation" handling.
2228
6e2b4ccc
PH
222984. Some minor changes to the Linux configuration files to help with other
2230 OS variants using glibc.
2231
8e669ac1
PH
223285. One more patch for Sieve to update vacation handling to latest spec.
2233
495ae4b0 2234
bbe902f0
PH
2235----------------------------------------------------
2236See the note above about the 4.44 and 4.50 releases.
2237----------------------------------------------------
2238
2239
2240Exim version 4.44
2241-----------------
2242
2243 1. Change 4.43/35 introduced a bug that caused file counts to be
2244 incorrectly computed when quota_filecount was set in an appendfile
2245 transport
2246
2247 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2248 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2249 place.
2250
2251 3. Give more explanation in the error message when the command for a transport
2252 filter fails to execute.
2253
2254 4. There are several places where Exim runs a non-Exim command in a
2255 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2256 was being done only for the command run by the queryprogram router. It is
2257 now done for all such subprocesses. The other cases are: ${run, transport
2258 filters, and the commands run by the lmtp and pipe transports.
2259
2260 5. Some older OS have a limit of 256 on the maximum number of file
2261 descriptors. Exim was using setrlimit() to set 1000 as a large value
2262 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2263 systems. I've change it so that if it can't get 1000, it tries for 256.
2264
2265 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2266 was an oversight, and furthermore, ever since the addition of extra
2267 controls (e.g. 4.43/32), the checks on when to allow different forms of
2268 "control" were broken. There should now be diagnostics for all cases when a
2269 control that does not make sense is encountered.
2270
2271 7. $recipients is now available in the predata ACL (oversight).
2272
2273 8. Tidy the search cache before the fork to do a delivery from a message
2274 received from the command line. Otherwise the child will trigger a lookup
2275 failure and thereby defer the delivery if it tries to use (for example) a
2276 cached ldap connection that the parent has called unbind on.
2277
2278 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2279 of $address_data from the recipient verification was clobbered by the
2280 sender verification.
2281
228210. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2283 was its contents. (It was OK if the option was not defined at all.)
2284
228511. A "Completed" log line is now written for messages that are removed from
2286 the spool by the -Mrm option.
2287
228812. $host_address is now set to the target address during the checking of
2289 ignore_target_hosts.
2290
229113. When checking ignore_target_hosts for an ipliteral router, no host name was
2292 being passed; this would have caused $sender_host_name to have been used if
2293 matching the list had actually called for a host name (not very likely,
2294 since this list is usually IP addresses). A host name is now passed as
2295 "[x.x.x.x]".
2296
229714. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2298 code that specifies a non-restarting handler (typically sigaction() in
2299 modern systems) in an attempt to fix a rare and obscure crash bug.
2300
230115. Narrowed the window for a race in the daemon that could cause it to ignore
2302 SIGCHLD signals. This is not a major problem, because they are used only to
2303 wake it up if nothing else does.
2304
230516. A malformed maildirsize file could cause Exim to calculate negative values
2306 for the mailbox size or file count. Odd effects could occur as a result.
2307 The maildirsize information is now recalculated if the size or filecount
2308 end up negative.
2309
231017. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2311 support for a long time. Removed HAVE_SYS_VFS_H.
2312
ea3a6f44 231318. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2314
231519. Allow an empty sender to be matched against a lookup in an address list.
2316 Previously the only cases considered were a regular expression, or an
2317 empty pattern.
2318
231920. Exim went into a mad DNS lookup loop when doing a callout where the
2320 host was specified on the transport, if the DNS lookup yielded more than
2321 one IP address.
2322
ea3a6f44
NM
232321. The RFC2047 encoding function was originally intended for short strings
2324 such as real names; it was not keeping to the 75-character limit for
2325 encoded words that the RFC imposes. It now respects the limit, and
2326 generates multiple encoded words if necessary. To be on the safe side, I
2327 have increased the buffer size for the ${rfc2047: expansion operator from
2328 1024 to 2048 bytes.
bbe902f0 2329
ea3a6f44
NM
233022. Failure to deliver a bounce message always caused it to be frozen, even if
2331 there was an errors_to setting on the router. The errors_to setting is now
2332 respected.
bbe902f0
PH
2333
233423. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2335 canonical form (fully expanded) before being placed in
2336 $sender_host_address.
2337
233824. Updated eximstats to version 1.33
2339
ea3a6f44
NM
234025. Include certificate and key file names in error message when GnuTLS fails
2341 to set them up, because the GnuTLS error message doesn't include the name
2342 of the failing file when there is a problem reading it.
bbe902f0
PH
2343
234426. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2345 As per change 25.
bbe902f0 2346
ea3a6f44
NM
234727. Reset the locale to "C" after calling embedded Perl, in case it was changed
2348 (this can affect the format of dates).
bbe902f0 2349
ea3a6f44
NM
235028. exim_tidydb, when checking for the continued existence of a message for
2351 which it has found a message-specific retry record, was not finding
2352 messages that were in split spool directories. Consequently, it was
2353 deleting retry records that should have stayed in existence.
bbe902f0
PH
2354
235529. eximstats updated to version 1.35
2356 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2357 1.35 - bugfix such that pie charts by volume are generated correctly
2358
ea3a6f44
NM
235930. The SPA authentication driver was not abandoning authentication and moving
2360 on to the next authenticator when an expansion was forced to fail,
2361 contradicting the general specification for all authenticators. Instead it
2362 was generating a temporary error. It now behaves as specified.
bbe902f0 2363
ea3a6f44
NM
236431. The default ordering of permitted cipher suites for GnuTLS was pessimal
2365 (the order specifies the preference for clients). The order is now AES256,
2366 AES128, 3DES, ARCFOUR128.
bbe902f0 2367
ea3a6f44
NM
236831. Small patch to Sieve code - explicitly set From: when generating an
2369 autoreply.
bbe902f0 2370
ea3a6f44
NM
237132. Exim crashed if a remote delivery caused a very long error message to be
2372 recorded - for instance if somebody sent an entire SpamAssassin report back
2373 as a large number of 550 error lines. This bug was coincidentally fixed by
2374 increasing the size of one of Exim's internal buffers (big_buffer) that
2375 happened as part of the Exiscan merge. However, to be on the safe side, I
2376 have made the code more robust (and fixed the comments that describe what
2377 is going on).
bbe902f0 2378
ea3a6f44
NM
237933. Some experimental protocols are using DNS PTR records for new purposes. The
2380 keys for these records are domain names, not reversed IP addresses. The
2381 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2382 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2383 CAN-2005-0021
2384
ea3a6f44
NM
238534. The host_aton() function is supposed to be passed a string that is known
2386 to be a valid IP address. However, in the case of IPv6 addresses, it was
2387 not checking this. This is a hostage to fortune. Exim now panics and dies
2388 if the condition is not met. A case was found where this could be provoked
2389 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2390 components; fortuitously, this particular loophole had already been fixed
2391 by change 4.50/55 or 4.44/33 above.
2392
2393 If there are any other similar loopholes, the new check in host_aton()
2394 itself should stop them being exploited. The report I received stated that
2395 data on the command line could provoke the exploit when Exim was running as
2396 exim, but did not say which command line option was involved. All I could
2397 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2398 running as the user.
bbe902f0
PH
2399 CAN-2005-0021
2400
ea3a6f44
NM
240135. There was a buffer overflow vulnerability in the SPA authentication code
2402 (which came originally from the Samba project). I have added a test to the
2403 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2404 CAN-2005-0022
2405
ea3a6f44
NM
240636. The daemon start-up calls getloadavg() while still root for those OS that
2407 need the first call to be done as root, but it missed one case: when
2408 deliver_queue_load_max is set with deliver_drop_privilege. This is
2409 necessary for the benefit of the queue runner, because there is no re-exec
2410 when deliver_drop_privilege is set.
bbe902f0 2411
ea3a6f44
NM
241237. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2413 was in use, was not putting the data itself into the right store pool;
2414 consequently, it could be overwritten for a subsequent message in the same
2415 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2416 the caching.)
bbe902f0 2417
ea3a6f44
NM
241838. Sometimes the final signoff response after QUIT could fail to get
2419 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2420 < 0 before doing a fflush(). This bug looks as though it goes back to the
2421 introduction of TLS in release 3.20, but "sometimes" must have been rare
2422 because the tests only now provoked it.
bbe902f0
PH
2423
2424
495ae4b0
PH
2425Exim version 4.43
2426-----------------
2427
2428 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2429 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2430 Now it returns an integer. A number of calls were still expecting a T/F
2431 return. Fortuitously, in all cases, the tests worked in OK situations,
2432 which is the norm. However, things would have gone wrong on any write
2433 failures on the smtp file descriptor. This function is used when sending
2434 messages over SMTP and also when doing verify callouts.
2435
2436 2. When Exim is called to do synchronous delivery of a locally submitted
2437 message (the -odf or -odi options), it no longer closes stderr before doing
2438 the delivery.
2439
2440 3. Implemented the mua_wrapper option.
2441
2442 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2443
2444 5. Implemented the functions header_remove(), header_testname(),
2445 header_add_at_position(), and receive_remove_recipient(), and exported them
2446 to local_scan().
2447
2448 6. If an ACL "warn" statement specified the addition of headers, Exim already
2449 inserted X-ACL-Warn: at the start if there was no header name. However, it
2450 was not making this test for the second and subsequent header lines if
2451 there were newlines in the string. This meant that an invalid header could
2452 be inserted if Exim was badly configured.
2453
2454 7. Allow an ACL "warn" statement to add header lines at the start or after all
2455 the Received: headers, as well as at the end.
2456
2457 8. Added the rcpt_4xx retry error code.
2458
2459 9. Added postmaster_mailfrom=xxx to callout verification option.
2460
246110. Added mailfrom=xxxx to the callout verification option, for verify=
2462 header_sender only.
2463
246411. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2465 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2466
246712. Inserted some casts to stop certain compilers warning when using pointer
2468 differences as field lengths or precisions in printf-type calls (mostly
2469 affecting debugging statements).
2470
247113. Added optional readline() support for -be (dynamically loaded).
2472
247314. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2474 same clock tick as a message's arrival, so that its received time was the
2475 same as the "first fail" time on the retry record, and that message
2476 remained on the queue past the ultimate address timeout, every queue runner
2477 would try a delivery (because it was past the ultimate address timeout) but
2478 after another failure, the ultimate address timeout, which should have then
2479 bounced the address, did not kick in. This was a "< instead of <=" error;
2480 in most cases the first failure would have been in the next clock tick
2481 after the received time, and all would be well.
2482
248315. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2484 being recognized when the domain list was tested by the match_domain
2485 condition in an expansion string.
2486
248716. Added the ${str2b64: operator.
2488
248917. Exim was always calling setrlimit() to set a large limit for the number of
2490 processes, without checking whether the existing limit was already
2491 adequate. (It did check for the limit on file descriptors.) Furthermore,
2492 errors from getrlimit() and setrlimit() were being ignored. Now they are
2493 logged to the main and panic logs, but Exim does carry on, to try to do its
2494 job under whatever limits there are.
2495
249618. Imported PCRE 5.0.
2497
249819. Trivial typo in log message " temporarily refused connection" (the leading
2499 space).
2500
250120. If the log selector return_path_on_delivery was set and an address was
2502 redirected to /dev/null, the delivery process crashed because it assumed
2503 that a return path would always be set for a "successful" delivery. In this
2504 case, the whole delivery is bypassed as an optimization, and therefore no
2505 return path is set.
2506
250721. Internal re-arrangement: the function for sending a challenge and reading
2508 a response while authentication was assuming a zero-terminated challenge
2509 string. It's now changed to take a pointer and a length, to allow for
2510 binary data in such strings.
2511
251222. Added the cyrus_sasl authenticator (code supplied by MBM).
2513
251423. Exim was not respecting finduser_retries when seeking the login of the
2515 uid under which it was called; it was always trying 10 times. (The default
2516 setting of finduser_retries is zero.) Also, it was sleeping after the final
2517 failure, which is pointless.
2518
251924. Implemented tls_on_connect_ports.
2520
252125. Implemented acl_smtp_predata.
2522
252326. If the domain in control=submission is set empty, Exim assumes that the
2524 authenticated id is a complete email address when it generates From: or
2525 Sender: header lines.
2526
252727. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2528 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2529 chown and chgrp in /bin and hostname in /usr/bin.
2530
253128. Exim was keeping the "process log" file open after each use, just as it
2532 does for the main log. This opens the possibility of it remaining open for
2533 long periods when the USR1 signal hits a daemon. Occasional processlog
2534 errors were reported, that could have been caused by this. Anyway, it seems
2535 much more sensible not to leave this file open at all, so that is what now
2536 happens.
2537
253829. The long-running daemon process does not normally write to the log once it
2539 has entered its main loop, and it closes the log before doing so. This is
2540 so that log files can straightforwardly be renamed and moved. However,
2541 there are a couple of unusual error situations where the daemon does write
2542 log entries, and I had neglected to close the log afterwards.
2543
254430. The text of an SMTP error response that was received during a remote
2545 delivery was being truncated at 512 bytes. This is too short for some of
2546 the long messages that one sometimes sees. I've increased the limit to
2547 1024.
2548
254931. It is now possible to make retry rules that apply only when a message has a
2550 specific sender, in particular, an empty sender.
2551
255232. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2553 it possible to be selective about when SMTP synchronization is enforced.
2554
255533. Added "control = caseful_local_part" and "control = "caselower_local_part".
2556
255732. Implemented hosts_connection_nolog.
2558
255933. Added an ACL for QUIT.
2560
256134. Setting "delay_warning=" to disable warnings was not working; it gave a
2562 syntax error.
2563
256435. Added mailbox_size and mailbox_filecount to appendfile.
2565
256636. Added control = no_multiline_responses to ACLs.
2567
256837. There was a bug in the logic of the code that waits for the clock to tick
2569 in the case where the clock went backwards by a substantial amount such
2570 that the microsecond fraction of "now" was more than the microsecond
2571 fraction of "then" (but the whole seconds number was less).
2572
257338. Added support for the libradius Radius client library this is found on
2574 FreeBSD (previously only the radiusclient library was supported).
2575
2576
2577Exim version 4.42
2578-----------------
2579
2580 1. When certain lookups returned multiple values in the form name=value, the
2581 quoting of the values was not always being done properly. Specifically:
2582 (a) If the value started with a double quote, but contained no whitespace,
2583 it was not quoted.
2584 (b) If the value contained whitespace other than a space character (i.e.
2585 tabs or newlines or carriage returns) it was not quoted.
2586 This fix has been applied to the mysql and pgsql lookups by writing a
2587 separate quoting function and calling it from the lookup code. The fix
2588 should probably also be applied to nisplus, ibase and oracle lookups, but
2589 since I cannot test any of those, I have not disturbed their existing code.
2590
2591 2. A hit in the callout cache for a specific address caused a log line with no
2592 reason for rejecting RCPT. Now it says "Previous (cached) callout
2593 verification failure".
2594
2595 3. There was an off-by-one bug in the queryprogram router. An over-long
2596 return line was truncated at 256 instead of 255 characters, thereby
2597 overflowing its buffer with the terminating zero. As well as fixing this, I
2598 have increased the buffer size to 1024 (and made a note to document this).
2599
2600 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2601 when Exim is waiting for an SMTP response from a remote server, Exim
2602 restarts its select() call on the socket, thereby resetting its timeout.
2603 This is not a problem when such interrupts are rare. Somebody set up a cron
2604 job to run exiwhat every 2 minutes, which is less than the normal select()
2605 timeout (5 or 10 minutes). This meant that the select() timeout never
2606 kicked in because it was always reset. I have fixed this by comparing the
2607 time when an interrupt arrives with the time at the start of the first call
2608 to select(). If more time than the timeout has elapsed, the interrupt is
2609 treated as a timeout.
2610
2611 5. Some internal re-factoring in preparation for the addition of Sieve
2612 extensions (by MH). In particular, the "personal" test is moved to a
2613 separate function, and given an option for scanning Cc: and Bcc: (which is
2614 not set for Exim filters).
2615
2616 6. When Exim created an email address using the login of the caller as the
2617 local part (e.g. when creating a From: or Sender: header line), it was not
2618 quoting the local part when it contained special characters such as @.
2619
2620 7. Installed new OpenBSD configuration files.
2621
2622 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2623 try to make them clearer.
2624
2625 9. Callout options, other than the timeout value, were being ignored when
2626 verifying sender addresses in header lines. For example, when using
2627
2628 verify = header_sender/callout=no_cache
2629
2630 the cache was (incorrectly) being used.
2631
263210. Added a missing instance of ${EXE} to the exim_install script; this affects
2633 only the Cygwin environment.
2634
263511. When return_path_on_delivery was set as a log selector, if different remote
2636 addresses in the same message used different return paths and parallel
2637 remote delivery occurred, the wrong values would sometimes be logged.
2638 (Whenever a remote delivery process finished, the return path value from
2639 the most recently started remote delivery process was logged.)
2640
264112. RFC 3848 specifies standard names for the "with" phrase in Received: header
2642 lines when AUTH and/or TLS are in use. This is the "received protocol"
2643 field. Exim used to use "asmtp" for authenticated SMTP, without any
2644 indication (in the protocol name) for TLS use. Now it follows the RFC and
2645 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2646 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2647 names appear in log lines as well as in Received: header lines.
2648
264913. Installed MH's patches for Sieve to add the "copy" and "vacation"
2650 extensions, and comparison tests, and to fix some bugs.
2651
265214. Changes to the "personal" filter test:
2653
2654 (1) The test was buggy in that it was just doing the equivalent of
2655 "contains" tests on header lines. For example, if a user's address was
2656 anne@some.where, the "personal" test would incorrectly be true for
2657
2658 To: susanne@some.where
2659
2660 This test is now done by extracting each address from the header in turn,
2661 and checking the entire address. Other tests that are part of "personal"
2662 are now done using regular expressions (for example, to check local parts
2663 of addresses in From: header lines).
2664
2665 (2) The list of non-personal local parts in From: addresses has been
2666 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2667 taken from the Sieve specification recommendations.
2668
2669 (3) If the message contains any header line starting with "List-" it is
2670 treated as non-personal.
2671
2672 (4) The test for "circular" in the Subject: header line has been removed
2673 because it now seems ill-conceived.
2674
267515. Minor typos in src/EDITME comments corrected.
2676
267716. Installed latest exipick from John Jetmore.
2678
267917. If headers_add on a router specified a text string that was too long for
2680 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2681 of string_sprintf() is now avoided.
2682
268318. $message_body_size was not set (it was always zero) when running the DATA
2684 ACL and the local_scan() function.
2685
268619. For the "mail" command in an Exim filter, no default was being set for
2687 the once_repeat time, causing a random time value to be used if "once" was
2688 specified. (If the value happened to be <= 0, no repeat happened.) The
2689 default is now 0s, meaning "never repeat". The "vacation" command was OK
2690 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2691 (I found it when inspecting the code).
2692
269320. There is now an overall timeout for performing a callout verification. It
2694 defaults to 4 times the callout timeout, which applies to individual SMTP
2695 commands during the callout. The overall timeout applies when there is more
2696 than one host that can be tried. The timeout is checked before trying the
2697 next host. This prevents very long delays if there are a large number of
2698 hosts and all are timing out (e.g. when the network connections are timing
2699 out). The value of the overall timeout can be changed by specifying an
2700 additional sub-option for "callout", called "maxwait". For example:
2701
2702 verify = sender/callout=5s,maxwait=20s
2703
270421. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2705 to the end before writing, but this should make it even safer).
2706
270722. Exim was forgetting that it had advertised PIPELINING for the second and
2708 subsequent messages on an SMTP connection. It was also not resetting its
2709 memory on STARTTLS and an internal HELO.
2710
271123. When Exim logs an SMTP synchronization error within a session, it now
2712 records whether PIPELINING has been advertised or not.
2713
271424. Added 3 instances of "(long int)" casts to time_t variables that were being
2715 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2716 rather than long int.
2717
271825. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2719
272026. Added the never_mail option to autoreply.
2721
2722
2723Exim version 4.41
2724-----------------
2725
2726 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2727 crash if the getsockname() call failed; this can happen if a connection is
2728 closed very soon after it is established. The problem was simply in the
2729 order in which certain operations were done, causing Exim to try to write
2730 to the SMTP stream before it had set up the file descriptor. The bug has
2731 been fixed by making things happen in the correct order.
2732
2733
2734Exim version 4.40
2735-----------------
2736
2737 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2738 before the connection was closed, thus losing the rejection response.
2739
2740 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2741 some early Solaris releases, but causes trouble in current releases where
2742 socklen_t is defined.
2743
2744 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2745 always exist.
2746
2747 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2748 configured.
2749
2750 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2751 that releasing the top of it at the end releases what was used for sub-
2752 expansions (unless the block got too big). However, discard this block if
2753 the first thing is a variable or header, so that we can use its block when
2754 it is dynamic (useful for very large $message_headers, for example).
2755
2756 6. Lookups now cache *every* query, not just the most recent. A new, separate
2757 store pool is used for this. It can be recovered when all lookup caches are
2758 flushed. Lookups now release memory at the end of their result strings.
2759 This has involved some general refactoring of the lookup sources.
2760
2761 7. Some code has been added to the store_xxx() functions to reduce the amount
2762 of flapping under certain conditions.
2763
2764 8. log_incoming_interface used to affect only the <= reception log lines. Now
2765 it causes the local interface and port to be added to several more SMTP log
2766 lines, for example "SMTP connection from", and rejection lines.
2767
2768 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2769
277010. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2771
277211. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2773 could be overwritten at the end of the current message (or the start of a
2774 new message if it was set in a HELO ACL). The value is now preserved for
2775 the duration of the SMTP connection.
2776
277712. If a transport had a headers_rewrite setting, and a matching header line
2778 contained an unqualified address, that address was qualified, even if it
2779 did not match any rewriting rules. The underlying bug was that the values
2780 of the flags that permit the existence of unqualified sender and recipient
2781 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2782 non-local messages, and by -bnq for local messages) were not being
2783 preserved with the message after it was received.
2784
278513. When Exim was logging an SMTP synchronization error, it could sometimes log
2786 "next input=" as part of the text comprising the host identity instead of
2787 the correct text. The code was using the same buffer for two different
2788 strings. However, depending on which order the printing function evaluated
2789 its arguments, the bug did not always show up. Under Linux, for example, my
2790 test suite worked just fine.
2791
279214. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2793 doesn't work with some older versions of Perl. It has been changed to "my",
2794 which in any case is probably the better facility to use.
2795
279615. A really picky compiler found some instances of statements for creating
2797 error messages that either had too many or two few arguments for the format
2798 string.
2799
280016. The size of the buffer for calls to the DNS resolver has been increased
2801 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2802 for addresses that have a lot of PTR records. This alleviates a problem; it
2803 does not fully solve it.
2804
280517. A dnsdb lookup for PTR records that receives more data than will fit in the
2806 buffer now truncates the list and logs the incident, which is the same
2807 action as happens when Exim is looking up a host name and its aliases.
2808 Previously in this situation something unpredictable would happen;
2809 sometimes it was "internal error: store_reset failed".
2810
281118. If a server dropped the connection unexpectedly when an Exim client was
2812 using GnuTLS and trying to read a response, the client delivery process
2813 crashed while trying to generate an error log message.
2814
281519. If a "warn" verb in an ACL added multiple headers to a message in a single
2816 string, for example:
2817
2818 warn message = H1: something\nH2: something
2819
2820 the text was added as a single header line from Exim's point of view
2821 though it ended up OK in the delivered message. However, searching for the
2822 second and subsequent header lines using $h_h2: did not work. This has been
2823 fixed. Similarly, if a system filter added multiple headers in this way,
2824 the routers could not see them.
2825
282620. Expanded the error message when iplsearch is called with an invalid key to
2827 suggest using net-iplsearch in a host list.
2828
282921. When running tests using -bh, any delays imposed by "delay" modifiers in
2830 ACLs are no longer actually imposed (and a message to that effect is
2831 output).
2832
283322. If a "gecos" field in a passwd entry contained escaped characters, in
2834 particular, if it contained a \" sequence, Exim got it wrong when building
2835 a From: or a Sender: header from that name. A second bug also caused
2836 incorrect handling when an unquoted " was present following a character
2837 that needed quoting.
2838
283923. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2840 was not being matched caselessly.
2841
284224. Arranged for all hyphens in the exim.8 source to be escaped with
2843 backslashes.
2844
284525. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2846 properly. Recipient callout cache records were still being keyed to include
2847 the sender, even when use_sender was set false. This led to far more
2848 callouts that were necessary. The sender is no longer included in the key
2849 when use_sender is false.
2850
285126. Added "control = submission" modifier to ACLs.
2852
285327. Added the ${base62d: operator to decode base 62 numbers.
2854
285528. dnsdb lookups can now access SRV records.
2856
285729. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2858 the configuration file.
2859
286030. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2861 (-v) mode. This makes the output for a verbose queue run more intelligible.
2862
286331. Added a use_postmaster feature to recipient callouts.
2864
286532. Added the $body_zerocount variable, containing the number of binary zero
2866 bytes in the message body.
2867
286833. The time of last modification of the "new" subdirectory is now used as the
2869 "mailbox time last read" when there is a quota error for a maildir
2870 delivery.
2871
287234. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2873
287435. Added +ignore_unknown as a special item in host lists.
2875
287636. Code for decoding IPv6 addresses in host lists is now included, even if
2877 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2878 address was recognized as an IP address, but was then not correctly decoded
2879 into binary, causing unexpected and incorrect effects when compared with
2880 another IP address.
2881
2882
2883Exim version 4.34
2884-----------------
2885
2886 1. Very minor rewording of debugging text in manualroute to say "list of
2887 hosts" instead of "hostlist".
2888
2889 2. If verify=header_syntax was set, and a header line with an unqualified
2890 address (no domain) and a large number of spaces between the end of the
2891 name and the colon was received, the reception process suffered a buffer
2892 overflow, and (when I tested it) crashed. This was caused by some obsolete
2893 code that should have been removed. The fix is to remove it!
2894
2895 3. When running in the test harness, delay a bit after writing a bounce
2896 message to get a bit more predictability in the log output.
2897
2898 4. Added a call to search_tidyup() just before forking a reception process. In
2899 theory, someone could use a lookup in the expansion of smtp_accept_max_
2900 per_host which, without the tidyup, could leave open a database connection.
2901
2902 5. Added the variables $recipient_data and $sender_data which get set from a
2903 lookup success in an ACL "recipients" or "senders" condition, or a router
2904 "senders" option, similar to $domain_data and $local_part_data.
2905
2906 6. Moved the writing of debug_print from before to after the "senders" test
2907 for routers.
2908
2909 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2910 problems for message scanning, either using a data ACL, or using
2911 local_scan() because the Received: header was not generated till after they
2912 were called (in order to set the time as the time of reception completion).
2913 I have revised the way this works. The header is now generated after the
2914 body is received, but before the ACL or local_scan() are called. After they
2915 are run, the timestamp in the header is updated.
2916
2917
2918Exim version 4.33
2919-----------------
2920
2921 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2922 before starting a queue runner without re-exec. This happened only when
2923 deliver_drop_privilege was set or when the Exim user was set to root. The
2924 effect of the bug was that timeouts during subsequent deliveries caused
2925 crashes instead of being properly handled. The handler is now left at its
2926 default (and expected) setting.
2927
2928 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2929 message, again when deliver_drop_privilege is set or Exim is run as root.
2930 The bug described in (1) was not present in this case, but the tidying up
2931 of the other signals was missing. I have made the two cases consistent.
2932
2933 3. The ignore_target_hosts setting on a manualroute router was being ignored
2934 for hosts that were looked up using the /MX notation.
2935
2936 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2937 in domain lists.
2938
2939 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2940 operated on the sender address. After changing the $sender_address to <>
2941 for the sender address verify, Exim was re-instated it as the original
2942 (before rewriting) address, but remembering that it had rewritten it, so it
2943 wasn't rewriting it again. This bug also had the effect of breaking the
2944 sender address verification caching when the sender address was rewritten.
2945
2946 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2947 This has been changed so that if the ip literal address matches
2948 ignore_target_hosts, the router declines.
2949
2950 7. Added expansion conditions match_domain, match_address, and match_local_
2951 part (NOT match_host).
2952
2953 8. The placeholder for the Received: header didn't have a length field set.
2954
2955 9. Added code to Exim itself and to exim_lock to test for a specific race
2956 condition that could lead to file corruption when using MBX delivery. The
2957 issue is with the lockfile that is created in /tmp. If this file is removed
2958 after a process has opened it but before that process has acquired a lock,
2959 there is the potential for a second process to recreate the file and also
2960 acquire a lock. This could lead to two Exim processes writing to the file
2961 at the same time. The added code performs the same test as UW imapd; it
2962 checks after acquiring the lock that its file descriptor still refers to
2963 the same named file.
2964
296510. The buffer for building added header lines was of fixed size, 8192 bytes.
2966 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2967 when Exim is built.
2968
296911. Added the smtp_active_hostname option. If used, this will typically be made
2970 to depend on the incoming interface address. Because $interface_address is
2971 not set up until the daemon has forked a reception process, error responses
2972 that can happen earlier (such as "too many connections") no longer contain
2973 a host name.
2974
297512. If an expansion in a condition on a "warn" statement fails because a lookup
2976 defers, the "warn" statement is abandoned, and the next ACL statement is
2977 processed. Previously this caused the whole ACL to be aborted.
2978
297913. Added the iplsearch lookup type.
2980
298114. Added ident_timeout as a log selector.
2982
298315. Added tls_certificate_verified as a log selector.
2984
298516. Added a global option tls_require_ciphers (compare the smtp transport
2986 option of the same name). This controls incoming TLS connections.
2987
298817. I finally figured out how to make tls_require_ciphers do a similar thing
2989 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2990 before starting the TLS session.
2991
299218. Tabs are now shown as \t in -bP output.
2993
299419. If the log selector return_path_on_delivery was set, Exim crashed when
2995 bouncing a message because it had too many Received: header lines.
2996
299720. If two routers both had headers_remove settings, and the first one included
2998 a superfluous trailing colon, the final name in the first list and the
2999 first name in the second list were incorrectly joined into one item (with a
3000 colon in the middle).
3001
3002
3003Exim version 4.32
3004-----------------
3005
3006 1. Added -C and -D options to the exinext utility, mainly to make it easier
3007 to include in the automated testing, but these could be helpful when
3008 multiple configurations are in use.
3009
3010 2. The exinext utility was not formatting the output nicely when there was
3011 an alternate port involved in the retry record key, nor when there was a
3012 message id as well (for retries that were specific to a specific message
3013 and a specific host). It was also confused by IPv6 addresses, because of
3014 the additional colons they contain. I have fixed the IPv4 problem, and
3015 patched it up to do a reasonable job for IPv6.
3016
3017 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3018 delivery, the log line now contains "pipelined" if PIPELINING was used.
3019
3020 4. An SMTP transport process used to panic and die if the bind() call to set
3021 an explicit outgoing interface failed. This has been changed; it is now
3022 treated in the same way as a connect() failure.
3023
3024 5. A reference to $sender_host_name in the part of a conditional expansion
3025 that was being skipped was still causing a DNS lookup. This no longer
3026 occurs.
3027
3028 6. The def: expansion condition was not recognizing references to header lines
3029 that used bh_ and bheader_.
3030
3031 7. Added the _cache feature to named lists.
3032
3033 8. The code for checking quota_filecount in the appendfile transport was
3034 allowing one more file than it should have been.
3035
3036 9. For compatibility with Sendmail, the command line option
3037
3038 -prval:sval
3039
3040 is equivalent to
3041
3042 -oMr rval -oMs sval
3043
3044 and sets the incoming protocol and host name (for trusted callers). The
3045 host name and its colon can be omitted when only the protocol is to be set.
3046 Note the Exim already has two private options, -pd and -ps, that refer to
3047 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3048 "s", but I don't think that's a major issue.
3049
305010. A number of refactoring changes to the code, none of which should affect
3051 Exim's behaviour:
3052
3053 (a) The number of logging options was getting close to filling up the
3054 32-bit word that was used as a bit map. I have split them into two classes:
3055 those that are passed in the argument to log_write(), and those that are
3056 only ever tested independently outside of that function. These are now in
3057 separate 32-bit words, so there is plenty of room for expansion again.
3058 There is no change in the user interface or the logging behaviour.
3059
3060 (b) When building, for example, log lines, the code previously used a
3061 macro that called string_cat() twice, in order to add two strings. This is
3062 not really sufficiently general. Furthermore, there was one instance where
3063 it was actually wrong because one of the argument was used twice, and in
3064 one call a function was used. (As it happened, calling the function twice
3065 did not affect the overall behaviour.) The macro has been replaced by a
3066 function that can join an arbitrary number of extra strings onto a growing
3067 string.
3068
3069 (c) The code for expansion conditions now uses a table and a binary chop
3070 instead of a serial search (which was left over from when there were very
3071 few conditions). Also, it now recognizes conditions like "pam" even when
3072 the relevant support is not compiled in: a suitably worded error message is
3073 given if an attempt is made to use such a condition.
3074
307511. Added ${time_interval:xxxxx}.
3076
307712. A bug was causing one of the ddress fields not to be passed back correctly
3078 from remote delivery subprocesses. The field in question was not being
3079 subsequently used, so this caused to problems in practice.
3080
308113. Added new log selectors queue_time and deliver_time.
3082
308314. Might have fixed a bug in maildirsizefile handling that threw up
3084 "unexpected character" debug warnings, and recalculated the data
3085 unnecessarily. In any case, I expanded the warning message to give more
3086 information.
3087
308815. Added the message "Restricted characters in address" to the statements in
3089 the default ACL that block characters like @ and % in local parts.
3090
309116. Change 71 for release 4.31 proved to be much less benign that I imagined.
3092 Three changes have been made:
3093
3094 (a) There was a serious bug; a negative response to MAIL caused the whole
3095 recipient domain to be cached as invalid, thereby blocking all messages
3096 to all local parts at the same domain, from all senders. This bug has
3097 been fixed. The domain is no longer cached after a negative response to
3098 MAIL if the sender used is not empty.
3099
3100 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3101 been restored.
3102
3103 (c) A new callout option, "use_sender" has been added for people who want
3104 the modified behaviour.
3105
3106
3107Exim version 4.31
3108-----------------
3109
3110 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3111 Larry Rosenman.
3112
3113 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3114 indeed breaks things for older releases.
3115
3116 3. Added additional logging to the case where there is a problem reading data
3117 from a filter that is running in a subprocess using a pipe, in order to
3118 try to track down a specific problem.
3119
3120 4. Testing facility fudge: when running in the test harness and attempting
3121 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3122 getting "No route to host". Convert this to a timeout.
3123
3124 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3125 warning.
3126
3127 6. Some OS don't have socklen_t but use size_t instead. This affects the
3128 fifth argument of getsockopt() amongst other things. This is now
3129 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3130 can be set for individual OS. I have set it for SunOS5, OSF1, and
3131 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3132 some earlier ones do not.
3133
3134 7. Change 4.30/15 was not doing the test caselessly.
3135
3136 8. The standard form for an IPv6 address literal was being rejected by address
3137 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3138 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3139 this, as well as the form without the "IPv6" on the front (but only when
3140 address literals are enabled, of course).
3141
3142 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3143
314410. Exim crashed if a message with an empty sender address specified by -f
3145 encountered a router with an errors_to setting. This could be provoked only
3146 by a command such as
3147
3148 exim -f "" ...
3149
3150 where an empty string was supplied; "<>" did not hit this bug.
3151
315211. Installed PCRE release 4.5.
3153
315412. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3155 remained set. It is now erased.
3156
315713. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3158 times from message ids (which are base 36 rather than the normal 62).
3159
316014. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3161 were being counted as actual protocol errors, and logged if the log
3162 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3163 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3164 and DATA following a set of rejected RCPTs do not count as protocol errors.
3165 In other words, Exim assumes they were pipelined, though this may not
3166 actually be the case. Of course, in all cases the client gets an
3167 appropriate error code.
3168
316915. If a lookup fails in an ACL condition, a message about the failure may
3170 be available; it is used if testing the ACL cannot continue, because most
3171 such messages specify what the cause of the deferral is. However, some
3172 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3173 that caused an old message to be retained and used if a later statement
3174 caused a defer, replacing the real cause of the deferral.
3175
317616. If an IP address had so many PTR records that the DNS lookup buffer
3177 was not large enough to hold them, Exim could crash while trying to process
3178 the truncated data. It now detects and logs this case.
3179
318017. Further to 4.21/58, another change has been made: if (and only if) the
3181 first line of a message (the first header line) ends with CRLF, a bare LF
3182 in a subsequent header line has a space inserted after it, so as not to
3183 terminate the header.
3184
318518. Refactoring: tidied an ugly bit of code in appendfile that copied data
3186 unnecessarily, used atoi() instead of strtol(), and didn't check the
3187 termination when getting file sizes from file names by regex.
3188
318919. Completely re-implemented the support for maildirsize files, in the light
3190 of a number of problems with the previous contributed implementation
3191 (4.30/29). In particular:
3192
3193 . If the quota is zero, the maildirsize file is maintained, but no quota is
3194 imposed.
3195
3196 . If the maildir directory does not exist, it is created before any attempt
3197 to write a maildirsize file.
3198
3199 . The quota value in the file is just a cache; if the quota is changed in
3200 the transport, the new value overrides.
3201
3202 . A regular expression is available for excluding directories from the
3203 count.
3204
320520. The autoreply transport checks the characters in options that define the
3206 message's headers; it allows continued headers, but it was checking with
3207 isspace() after an embedded newline instead of explicitly looking for a
3208 space or a tab.
3209
321021. If all the "regular" hosts to which an address was routed had passed their
3211 expiry times, and had not reached their retry times, the address was
3212 bounced, even if fallback hosts were defined. Now Exim should go on to try
3213 the fallback hosts.
3214
321522. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3216 equivalent code in the SMTP transport. Some hosts send humungous responses
3217 to HELO/EHLO, more than 1024 it seems.
3218
321923. Refactoring: code in filter.c used (void *) for "any old type" but this
3220 gives compiler warnings in some environments. I've now done it "properly",
3221 using a union.
3222
322324. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3224 (because of problems with the built-in one) was declared to return uschar *
3225 instead of char *, causing compiler failure.
3226
322725. Fixed a file descriptor leak when processing alias/forward files.
3228
322926. Fixed a minor format string issue in dbfn.c.
3230
323127. Typo in exim.c: ("dmbnz" for "dbmnz").
3232
323328. If a filter file refered to $h_xxx or $message_headers, and the headers
3234 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3235 become corrupted.
3236
323729. When a sender address is verified, it is cached, to save repeating the test
3238 when there is more than one recipient in a message. However, when the
3239 verification involves a callout, it is possible for different callout
3240 options to be set for different recipients. It is too complicated to keep
3241 track of this in the cache, so now Exim always runs a verification when a
3242 callout is required, relying on the callout cache for the optimization.
3243 The overhead is duplication of the address routing, but this should not be
3244 too great.
3245
324630. Fixed a bug in callout caching. If a RCPT command caused the sender address
3247 to be verified with callout=postmaster, and the main callout worked but the
3248 postmaster check failed, the verification correctly failed. However, if a
3249 subsequent RCPT command asked for sender verification *without* the
3250 postmaster check, incorrect caching caused this verification also to fail,
3251 incorrectly.
3252
325331. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3254 it was not caching the DNS options (qualify_single, search_parents) that
3255 were used when the lookup failed. A subsequent lookup with different
3256 options therefore always gave the same answer, though there were cases
3257 where it should not have. (Example: a "domains = !$mx_any" option on a
3258 dnslookup router: the "domains" option is always processed without any
3259 widening, but the router might have qualify_single set.) Now Exim uses the
3260 cached value only when the same options are set.
3261
326232. Added John Jetmore's "exipick" utility to the distribution.
3263
326433. GnuTLS: When an attempt to start a TLS session fails for any reason other
3265 than a timeout (e.g. a certificate is required, and is not provided), an
3266 Exim server now closes the connection immediately. Previously it waited for
3267 the client to close - but if the client is SSL, it seems that they each
3268 wait for each other, leading to a delay before one of them times out.
3269
327034: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3271 maintained 0.8.x compatibility because I don't think many are using it, and
3272 it is clearly obsolete.
3273
327435. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3275 transport.
3276
327736. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3278 client certificate was expired. A simple patch fixes this, though I don't
3279 understand the full logic of why the verify callback is called multiple
3280 times.
3281
328237. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3283 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3284 which causes problems with some clients (such as the Certicom SSL Plus
3285 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3286 disables the coutermeasure allowing Eudora to connect."
3287
328838. Exim was not checking that a write() to a log file succeeded. This could
3289 lead to Bad Things if a log got too big, in particular if it hit a file
3290 size limit. Exim now panics and dies if it cannot write to a log file, just
3291 as it does if it cannot open a log file.
3292
329339. Modified OS/Makefile-Linux so that it now contains
3294
3295 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3296
3297 The two -D definitions ensure that Exim is compiled with large file
3298 support, which makes it possible to handle log files that are bigger than
3299 2^31.
3300
330140. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3302 instance) a domain was checked against a named list that involved a lookup,
3303 causing $domain_data to be set, then another domain was checked against the
3304 same list, then the first domain was re-checked, the value of $domain_data
3305 after the final check could be wrong. In particular, if the second check
3306 failed, it could be set empty. This bug probably also applied to
3307 $localpart_data.
3308
330941. The strip_trailing_dot option was not being applied to the address given
3310 with the -f command-line option.
3311
331242. The code for reading a message's header from the spool was incrementing
3313 $received_count, but never initializing it. This meant that the value was
3314 incorrect (doubled) while delivering a message in the same process in which
3315 it was received. In the most common configuration of Exim, this never
3316 happens - a fresh exec is done - but it can happen when
3317 deliver_drop_privilege is set.
3318
331943. When Exim logs an SMTP synchronization error - client data sent too soon -
3320 it now includes up to 150 characters of the unexpected data in the log
3321 line.
3322
332344. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3324 and building data strings. The size of both of these buffers was 10 000
3325 bytes - far larger than anybody would *ever* want, thought I. Needless to
3326 say, somebody hit the limit. I have increased the maximum line length to
3327 20 000 and the maximum data length of concatenated lines to 100 000. I have
3328 also fixed two bugs, because there was no checking on these buffers. Tsk,
3329 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3330 buffer is too small.
3331
333245. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3333 lsearch lookups. Now it does.
3334
333546. When parsing a route_list item in a manualroute router, a fixed-length
3336 buffer was used for the list of hosts. I made this 1024 bytes long,
3337 thinking that nobody would ever have a list of hosts that long. Wrong.
3338 Somebody had a whole pile of complicated expansion conditions, and the
3339 string was silently truncated, leading to an expansion error. It turns out
3340 that it is easier to change to an unlimited length (owing to other changes
3341 that have happened since this code was originally written) than to build
3342 structure for giving a limitation error. The length of the item that
3343 expands into the list of hosts is now unlimited.
3344
334547. The lsearch lookup could not handle data where the length of text line was
3346 more than 4095 characters. Such lines were truncated, leading to shortened
3347 data being returned. It should now handle lines of any length.
3348
334948. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3350 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3351 ACL").
3352
335349. Cosmetic tidy to scripts like exicyclog that are generated by globally
3354 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3355 no longer happens in comment lines. A list of replacements is now placed
3356 at the head of all of the source files, except those whose only change is
3357 to replace PERL_COMMAND in the very first #! line.
3358
335950. Replaced the slow insertion sort in queue.c, for sorting the list of
3360 messages on the queue, with a bottom-up merge sort, using code contributed
3361 by Michael Haardt. This should make operations like -bp somewhat faster on
3362 large queues. It won't affect queue runners, except when queue_run_in_order
3363 is set.
3364
336551. Installed eximstats 1.31 in the distribution.
3366
336752. Added support for SRV lookups to the dnslookup router.
3368
336953. If an ACL referred to $message_body or $message_body_end, the value was not
3370 reset for any messages that followed in the same SMTP session.
3371
337254. The store-handling optimization for building very long strings was not
3373 differentiating between the different store pools. I don't think this
3374 actually made any difference in practice, but I've tidied it.
3375
337655. While running the routers to verify a sender address, $sender_address
3377 was still set to the sender address. This is wrong, because when routing to
3378 send a bounce to the sender, it would be empty. Therefore, I have changed
3379 it so that, while verifying a sender address, $sender_address is set to <>.
3380 (There is no change to what happens when verifying a recipient address.)
3381
338256. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3383 target A or AAAA records (if not already returned) without resetting the
3384 qualify_single or search_parents options of the DNS resolver. These are
3385 inappropriate in this case because the targets of MX and SRV records must
3386 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3387 target that, when qualified, matched something in the local domain. These
3388 two options are now turned off when doing these lookups.
3389
339057. It seems that at least some releases of Reiserfs (which does not have the
3391 concept of a fixed number of inodes) returns zero and not -1 for the
3392 number of available inodes. This interacted badly with check_spool_inodes,
3393 which assumed that -1 was the "no such thing" setting. What I have done is
3394 to check that the total number of inodes is greater than zero before doing
3395 the test of how many are available.
3396
339758. When a "warn" ACL statement has a log_message modifier, the message is
3398 remembered, and not repeated. This is to avoid a lot of repetition when a
3399 message has many recipients that cause the same warning to be written.
3400 Howewer, Exim was preserving the list of already written lines for an
3401 entire SMTP session, which doesn't seem right. The memory is now reset if a
3402 new message is started.
3403
340459. The "rewrite" debugging flag was not showing the result of rewriting in the
3405 debugging output unless log_rewrite was also set.
3406
340760. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3408 of (int)(handle) when we know that handle contains (void *)(-1).
3409
341061. The Exim daemon panic-logs an error return when it closes the incoming
3411 connection. However "connection reset by peer" seems to be common, and
3412 isn't really an error worthy of noting specially, so that particular error
3413 is no long logged.
3414
341562. When Exim is trying to find all the local interfaces, it used to panic and
3416 die if the ioctl to get the interface flags failed. However, it seems that
3417 on at least one OS (Solaris 9) it is possible to have an interface that is
3418 included in the list of interfaces, but for which you get a failure error
3419 for this call. This happens when the interface is not "plumbed" into a
3420 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3421 failure of the "get flags" call assumes that the interface is down.
3422
342363. Added a ${eval10: operator, which assumes all numbers are decimal. This
3424 makes life easier for people who are doing arithmetic on fields extracted
3425 from dates, where you often get leading zeros that should not be
3426 interpreted as octal.
3427
342864. Added qualify_domain to the redirect router, to override the global
3429 setting.
3430
343165. If a pathologically long header line contained very many addresses (the
3432 report of this problem mentioned 10 000) and each of them was rewritten,
3433 Exim could use up a very large amount of memory. (It kept on making new
3434 copies of the header line as it rewrote, and never released the old ones.)
3435 At the expense of a bit more processing, the header rewriting function has
3436 been changed so that it no longer eats memory in this way.
3437
343866. The generation of the Received: header has been moved from the time that a
3439 message starts to be received, to the time that it finishes. The timestamp
3440 in the Received: header should now be very close to that of the <= log
3441 line. There are two side-effects of this change:
3442
3443 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3444 logged header lines no longer include the local Received: line, because
3445 it has not yet been created. The same applies to a copy of the message
3446 that is returned to a non-SMTP sender when a message is rejected.
3447
3448 (b) When a filter file is tested using -bf, no additional Received: header
3449 is added to the test message. After some thought, I decided that this
3450 is a bug fix.
3451
3452 This change does not affect the value of $received_for. It is still set
3453 after address rewriting, but before local_scan() is called.
3454
345567. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3456
345768. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3458 gave an unhelpful panic error message, and a defer error. I have managed to
3459 change this behaviour so that it now rejects any supplied certificate,
3460 which seems right, as the list of acceptable certificates is empty.
3461
346269. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3463 gave an unhelpful defer error. I have not managed to make this reject any
3464 supplied certificates, but the error message it gives is "no certificate
3465 supplied", which is not helpful.
3466
346770. exigrep's output now also includes lines that are not associated with any
3468 message, but which match the given pattern. Implemented by a patch from
3469 Martin Sluka, which also tidied up the Perl a bit.
3470
347171. Recipient callout verification, like sender verification, was using <> in
3472 the MAIL FROM command. This isn't really the right thing, since the actual
3473 sender may affect whether the remote host accepts the recipient or not. I
3474 have changed it to use the actual sender in the callout; this means that
3475 the cache record is now keyed on a recipient/sender pair, not just the
3476 recipient address. There doesn't seem to be a real danger of callout loops,
3477 since a callout by the remote host to check the sender would use <>.
3478 [SEE ABOVE: changed after hitting problems.]
3479
348072. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3481 temporary errors. However, in the case of such a code being given after
3482 the end of a data transmission (i.e. after ".") Exim was failing to write
3483 a retry record for the message. (Yes, there was some broken host that was
3484 actually sending 8xx at this point.)
3485
348673. An unknown lookup type in a host list could cause Exim to panic-die when
3487 the list was checked. (An example that provoked this was putting <; in the
3488 middle of a list instead of at the start.) If this happened during a DATA
3489 ACL check, a -D file could be left lying around. This kind of configuration
3490 error no longer causes Exim to die; instead it causes a defer errror. The
3491 incident is still logged to the main and panic logs.
3492
349374. Buglet left over from Exim 3 conversion. The message "too many messages
3494 in one connection" was written to the rejectlog but not the mainlog, except
3495 when address rewriting (yes!) was being logged.
3496
349775. Added write_rejectlog option.
3498
349976. When a system filter was run not as root (that is, when system_filter_user
3500 was set), the values of the $n variables were not being returned to the
3501 main process; thus, they were not subsequently available in the $sn
3502 variables.
3503
350477. Added +return_path_on_delivery log selector.
3505
350678. A connection timeout was being treated differently from recipients deferred
3507 when testing hosts_max_try with a message that was older than the host's
3508 retry timeout. (The host should not be counted, thus allowing all hosts to
3509 be tried at least once before bouncing.) This may have been the cause of an
3510 occasionally reported bug whereby a message would remain on the queue
3511 longer than the retry timeout, but would be bounced if a delivery was
3512 forced. I say "may" because I never totally pinned down the problem;
3513 setting up timeout/retry tests is difficult. See also the next item.
3514
351579. The ultimate address timeout was not being applied to errors that involved
3516 a combination of host plus message (for example, a timeout on a MAIL
3517 command). When an address resolved to a number of possible hosts, and they
3518 were not all tried for each delivery (e.g. because of hosts_max_try), a
3519 message could remain on the queue longer than the retry timeout.
3520
352180. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3522 Haardt.
3523
352481. Fixed an obscure SMTP outgoing bug which required at least the following
3525 conditions: (a) there was another message waiting for the same server;
3526 (b) the server returned 5xx to all RCPT commands in the first message so
3527 that the message was not completed; (c) the server dropped the connection
3528 or gave a negative response to the RSET that Exim sends to abort the
3529 transaction. The observed case was a dropped connection after DATA that had
3530 been sent in pipelining mode. That is, the server had advertised PIPELINING
3531 but was not implementing it correctly. The effect of the bug was incorrect
3532 behaviour, such as trying another host, and this could lead to a crash.
3533
3534
3535Exim version 4.30
3536-----------------
3537
3538 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3539 and daemon.c were passed as pointers to ints; they should have been
3540 pointers to socklen_t variables (which are typically unsigned ints).
3541
3542 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3543 fixed.
3544
3545 3. Fixed a really odd bug that affected only the testing scheme; patching a
3546 certain fixed string in the binary changed the value of another string that
3547 happened to be identical to the end of the original first string.
3548
3549 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3550 name", it returns that address as the IP address. On some operating
3551 systems (e.g. Solaris), it also passes back the IP address string as the
3552 "host name". However, on others (e.g. Linux), it passes back an empty
3553 string. Exim wasn't checking for this, and was changing the host name to an
3554 empty string, assuming it had been canonicized.
3555
3556 5. Although rare, it is permitted to have more than one PTR record for a given
3557 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3558 all the names associated with an address, because they do in Solaris.
3559 However, it seems that they do not in Linux for data that comes from the
3560 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3561 I found this out when I moved to a new Linux workstation and tried to run
3562 the Exim test suite.
3563
3564 To get round this problem I have changed the code so that it now does its
3565 own call to the DNS to look up PTR records when searching for a host name.
3566 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3567 addresses that are only in /etc/hosts are still found.
3568
3569 This behaviour is, however, controlled by an option called host_lookup_
3570 order, which defaults to "bydns:byaddr". If people want to use the other
3571 order, or indeed, just use one or the other means of lookup, they can
3572 specify it in this variable.
3573
3574 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3575 some operating systems, this comes back from gethostbyaddr() as an empty
3576 string, and this is what Exim used to test for. However, it seems that in
3577 other systems, "." is yielded. Exim now tests for this case too.
3578
3579 7. The values of check_spool_space and check_log_space are now held internally
3580 as a number of kilobytes instead of an absolute number of bytes. If a
3581 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3582 kilobyte. This means that much larger values can be stored.
3583
3584 8. Exim monitor: an attempt to get the action menu when not actually pointing
3585 at a message produces an empty menu entitled "No message selected". This
3586 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3587 no entries in it ("Shell widget menu has zero width and/or height"). So I
3588 have added a single, blank menu entry in this case.
3589
3590 9. Added ${quote_local_part.
3591
359210. MIME decoding is now applied to the contents of Subject: header lines when
3593 they are logged.
3594
359511. Now that a reference to $sender_host_address automatically causes a reverse
3596 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3597 host lookup before query-style lookups in lists that might use this
3598 variable. This has therefore been abolished, and the "net-" prefix is no
3599 longer necessary for query-style lookups.
3600
360112. The Makefile for SCO_SV contained a setting of LDFLAGS.