Correct ChangeLog (forgot to remove entry when I changed my mind on a
[exim.git] / doc / doc-txt / ChangeLog
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17af4a17 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.419 2006/10/31 09:50:09 ph10 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-----------------
21d74bd9
TK
8TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
9 leftover -K file (the existence of which was triggered by #402).
10 While we were at it, introduced process PID as part of the -K
11 filename. This should rule out race conditions when creating
12 these files.
13
14TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
15 processing considerably. Previous code took too long for large mails,
16 triggering a timeout which in turn triggers #401.
17
18TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
19 in the DK code in transports.c. sendfile() is not really portable,
20 hence the _LINUX specificness.
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21
22TF/01 In the add_headers option to the mail command in an Exim filter,
23 there was a bug that Exim would claim a syntax error in any
24 header after the first one which had an odd number of characters
25 in the field name.
26
2b1c6e3a
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27PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
28 callout verification, Exim cached a "reject" for the entire domain. This
29 is correct for most verifications, but it is not correct for a recipient
30 verification with use_sender or use_postmaster set, because in that case
31 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
32 case of MAIL FROM:<> rejection from other early rejections (e.g.
33 rejection of HELO). When verifying a recipient using a non-null MAIL
34 address, the cache is ignored if it shows MAIL FROM:<> rejection.
35 Whatever the result of the callout, the value of the domain cache is
36 left unchanged (for any other kind of callout, getting as far as trying
37 RCPT means that the domain itself is ok).
38
1f872c80
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39PH/02 Tidied a number of unused variable and signed/unsigned warnings that
40 gcc 4.1.1 threw up.
41
42PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
43 manifest itself as EPIPE rather than ECONNECT. When tidying away a
44 session, the daemon ignores ECONNECT errors and logs others; it now
45 ignores EPIPE as well.
46
d203e649
PH
47PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
48 (quoted-printable decoding).
49
cc2ed8f7 50PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 51 later the small subsequent patch to fix an introduced bug.
f951fd57 52
ddfcd446
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53PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
54
d45b1de8
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55PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
56
57PH/08 An error is now given if message_size_limit is specified negative.
58
38a0a95f 59PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 60 to be given (somewhat) arbitrary names.
38a0a95f 61
a2405d83
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62JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
63 in 4.64-PH/09.
64
65JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
66 miscellaneous code fixes
67
6ea85e9a
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68PH/10 Added the log_reject_target ACL modifier to specify where to log
69 rejections.
70
26da7e20
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71PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
72 hostname. This is wrong, because it relates to the incoming message (and
73 probably the interface on which it is arriving) and not to the outgoing
74 callout (which could be using a different interface). This has been
75 changed to use the value of the helo_data option from the smtp transport
76 instead - this is what is used when a message is actually being sent. If
77 there is no remote transport (possible with a router that sets up host
78 addresses), $smtp_active_hostname is used.
6ea85e9a 79
14aa5a05 80PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 81 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
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82 (a) The code assumed that strncpy() returns a negative number on buffer
83 overflow, which isn't the case. Replaced with Exim's string_format()
84 function.
85 (b) There were several signed/unsigned issues. I just did the minimum
86 hacking in of casts. There is scope for a larger refactoring.
87 (c) The code used strcasecmp() which is not a standard C function.
88 Replaced with Exim's strcmpic() function.
89 (d) The code set only $1; it now sets $auth1 as well.
90 (e) A simple test gave the error "authentication client didn't specify
91 service in request". It would seem that Dovecot has changed its
92 interface. Fortunately there's a specification; I followed it and
93 changed what the client sends and it appears to be working now.
94
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95PH/13 Added $message_headers_raw to provide the headers without RFC 2047
96 decoding.
97
e6f6568e
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98PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
99 address A is aliased to B and C, where B exists and C does not. Without
100 -v the output is "A verified" because verification stops after a
101 successful redirection if more than one address is generated. However,
102 with -v the child addresses are also verified. Exim was outputting "A
103 failed to verify" and then showing the successful verification for C,
104 with its parentage. It now outputs "B failed to verify", showing B's
105 parentage before showing the successful verification of C.
106
d6f6e0dc
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107PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
108 look up a TXT record in a specific list after matching in a combined
109 list.
110
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111PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
112 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
113 they consult the DNS. I had assumed they would set it the way they
114 wanted; and indeed my experiments on Linux seem to show that in some
115 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
116 To be on the safe side, however, I have now made the interface to
117 host_find_byname() similar to host_find_bydns(), with an argument
118 containing the DNS resolver options. The host_find_byname() function now
119 sets these options at its start, just as host_find_bydns() does. The smtp
120 transport options dns_qualify_single and dns_search_parents are passed to
121 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
122 of host_find_byname() use the default settings of RES_DEFNAMES
123 (qualify_single) but not RES_DNSRCH (search_parents).
124
08955dd3
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125PH/17 Applied (a modified version of) Nico Erfurth's patch to make
126 spool_read_header() do less string testing, by means of a preliminary
127 switch on the second character of optional "-foo" lines. (This is
128 overdue, caused by the large number of possibilities that now exist.
129 Originally there were few.) While I was there, I also converted the
130 str(n)cmp tests so they don't re-test the leading "-" and the first
131 character, in the hope this might squeeze out yet more improvement.
132
1eccaa59
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133PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
134 flag allowing group syntax was set by the header_syntax check but not
135 turned off, possible causing trouble later; (2) The flag was not being
136 set at all for the header_verify test, causing "group"-style headers to
137 be rejected. I have now set it in this case, and also caused header_
138 verify to ignore an empty address taken from a group. While doing this, I
139 came across some other cases where the code for allowing group syntax
140 while scanning a header line wasn't quite right (mostly, not resetting
141 the flag correctly in the right place). These bugs could have caused
142 trouble for malformed header lines. I hope it is now all correct.
143
602e59e5
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144PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
145 with the "reply" argument non-NULL. The code, however (which originally
146 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
147 but it didn't always do it. This confused somebody who was copying the
148 code for some other use. I have removed all the tests.
149
411ef850
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150PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
151 feature that was used to support insecure browsers during the U.S. crypto
152 embargo. It requires special client support, and Exim is probably the
153 only MTA that supported it -- and would never use it because real RSA is
154 always available. This code has been removed, because it had the bad
155 effect of slowing Exim down by computing (never used) parameters for the
156 RSA_EXPORT functionality.
157
7befa435
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158PH/21 On the advice of Timo Sirainen, added a check to the dovecot
159 authenticator to fail if there's a tab character in the incoming data
160 (there should never be unless someone is messing about, as it's supposed
161 to be base64-encoded). Also added, on Timo's advice, the "secured" option
162 if the connection is using TLS or if the remote IP is the same as the
163 local IP, and the "valid-client-cert option" if a client certificate has
164 been verified.
165
48da4259 166PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
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167 authenticators. This can be used for authorization after authentication
168 succeeds. (In the case of plaintext, it servers for both authentication
169 and authorization.)
170
48da4259
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171PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
172 if any retry times were supplied.
173
d1d5595c
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174PH/24 Exim crashed if verify=helo was activated during an incoming -bs
175 connection, where there is no client IP address to check. In this
176 situation, the verify now always succeeds.
177
0ef732d9
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178PH/25 Applied John Jetmore's -Mset patch.
179
328895cc
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180PH/26 Added -bem to be like -Mset, but loading a message from a file.
181
fd700877
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182PH/27 In a string expansion for a processed (not raw) header when multiple
183 headers of the same name were present, leading whitespace was being
184 removed from all of them, but trailing whitespace was being removed only
185 from the last one. Now trailing whitespace is removed from each header
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186 before concatenation. Completely empty headers in a concatenation (as
187 before) are ignored.
fd700877 188
8dce1a6f
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189PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
190 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
191
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192PH/29 [Removed. This was a change that I later backed out, and forgot to
193 correct the ChangeLog entry (that I had efficiently created) before
194 committing the later change.]
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195
196PH/30 Exim was sometimes attempting to deliver messages that had suffered
197 address errors (4xx response to RCPT) over the same connection as other
198 messages routed to the same hosts. Such deliveries are always "forced",
199 so retry times are not inspected. This resulted in far too many retries
200 for the affected addresses. The effect occurred only when there were more
201 hosts than the hosts_max_try setting in the smtp transport when it had
202 the 4xx errors. Those hosts that it had tried were not added to the list
203 of hosts for which the message was waiting, so if all were tried, there
204 was no problem. Two fixes have been applied:
205
206 (i) If there are any address or message errors in an SMTP delivery, none
207 of the hosts (tried or untried) are now added to the list of hosts
208 for which the message is waiting, so the message should not be a
209 candidate for sending over the same connection that was used for a
210 successful delivery of some other message. This seems entirely
211 reasonable: after all the message is NOT "waiting for some host".
212 This is so "obvious" that I'm not sure why it wasn't done
213 previously. Hope I haven't missed anything, but it can't do any
214 harm, as the worst effect is to miss an optimization.
215
216 (ii) If, despite (i), such a delivery is accidentally attempted, the
217 routing retry time is respected, so at least it doesn't keep
218 hammering the server.
219
944e9e9c 220
478be7b0
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221Exim version 4.63
222-----------------
223
224SC/01 Use a glob alias rather than an array ref in eximstats generated
225 parser. This improves both readability and performance.
226
227SC/02 Collect SpamAssassin and rejection statistics in eximstats.
228 Don't display local sender or destination tables in eximstats unless
229 there is data to show.
230 Added average volumes into the eximstats top table text output.
231
232SC/03 Collect data on the number of addresses (recipients) as well
233 as the number of messages in eximstats.
234
2b965a65
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235TF/01 Correct an error in the documentation for the redirect router. Exim
236 does (usually) call initgroups() when daemonizing.
478be7b0 237
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238TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
239 with consistent privilege compared to when running as a daemon.
478be7b0 240
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241TF/03 Note in the spec that $authenticated_id is not set for local
242 submissions from trusted users.
243
90fc3069
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244TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
245 Thanks to Dean Brooks <dean@iglou.com> for the patch.
246
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247TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
248 by adding some example configuration directives to the default
249 configuration file. A little bit of work is required to uncomment the
250 directives and define how usernames and passwords are checked, but
251 there is now a framework to start from.
252
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253PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
254 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
255 without this. I don't know how relevant this is to other LDAP libraries.
256
4e167a8c
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257PH/02 Add the verb name to the "unknown ACL verb" error.
258
4608d683
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259PH/03 Magnus Holmgren's patch for filter_prepend_home.
260
b8dc3e4a
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261PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
262
5418e93b
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263PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
264 directory not expanded when it should be if an expanded home directory
265 was set for the address (which is overridden by the transport).
266
b4a9bda2
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267PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
268 libradius.
269
45b91596
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270PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
271 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
272 because it is too late at that time, and has no effect.
273
5547e2c5
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274PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
275 security issue with \' (bugzilla #107). I could not use the
276 PQescapeStringConn() function, because it needs a PGconn value as one of
277 its arguments.
278
dbcef0ea
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279PH/08 When testing addresses using -bt, indicate those final addresses that
280 are duplicates that would not cause an additional delivery. At least one
281 person was confused, thinking that -bt output corresponded to deliveries.
282 (Suppressing duplicates isn't a good idea as you lose the information
283 about possibly different redirections that led to the duplicates.)
284
25257489
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285PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
286 systems where poll() doesn't work, in particular OS X.
287
c816d124
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288PH/10 Added more information to debugging output for retry time not reached.
289
a9ccd69a
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290PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
291 operations in malware.c.
292
75fa1910
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293PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
294 signatures.
295
a7d7aa58
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296PH/13 If write_rejectlog was set false when logging was sent to syslog with
297 syslog_duplication set false, log lines that would normally be written
298 both the the main log and to the reject log were not written to syslog at
299 all.
300
42119b09
PH
301PH/14 In the default configuration, change the use of "message" in ACL warn
302 statements to "add_header".
303
41609df5
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304PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
305 not followed by a command (e.g. "seen endif").
306
a5bd321b
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307PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
308 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
309 latter.
310
e85a7ad5 311PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
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312 so that it is now:
313
e85a7ad5
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314 ${if or { \
315 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
316 { match{$h_precedence:}{(?i)bulk|list|junk} } \
317 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
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318 }{no}{yes}}
319
e85a7ad5
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320 The Auto-Submitted: and various List- headers are standardised, whereas I
321 don't think Precedence: ever was.
5dff5817 322
d8fe1c03
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323PH/18 Refactored debugging code in route_finduser() to show more information,
324 in particular, the error code if getpwnam() issues one.
325
16282d2b
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326PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
327 This is apparently needed in addition to the PH/07 change above to avoid
328 any possible encoding problems.
329
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330PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
331 but not after initializing Perl.
332
034d99ab
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333PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
334 output them only if debugging. By default they are written stderr,
335 apparently, which is not desirable.
336
6ec97b1b
PH
337PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
338 queries.
339
e22ca4ac
JJ
340JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
341 --not options
342
343JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
344
33d73e3b
PH
345PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
346 authenticated or an ident call has been made. Suppress the default
347 values for $authenticated_id and $authenticated_sender (but permit -oMai
348 and -oMas) when testing with -bh.
349
9ecb03f3
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350PH/24 Re-jigged the order of the tests in the default configuration so that the
351 tests for valid domains and recipients precede the DNS black list and CSA
352 tests, on the grounds that those ones are more expensive.
353
084efe8d
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354PH/25 Exim was not testing for a space following SMTP commands such as EHLO
355 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
356 This bug exists in every version of Exim that I still have, right back to
357 0.12.
358
366fc9f0
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359PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
360 However, an attempt to turn on case-sensitivity in a regex key by
361 including (?-i) didn't work because the subject string was already
362 lowercased, and the effects were non-intuitive. It turns out that a
363 one-line patch can be used to allow (?-i) to work as expected.
364
c59f5781 365
c887c79e
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366Exim version 4.62
367-----------------
368
369TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
370 other effects) broke the use of negated acl sub-conditions.
371
1cce3af8
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372PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
373 patch).
374
afb3eaaf
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375PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
376 "Deny" causes Exim to reject the incoming connection with a 554 error.
377 Unfortunately, if there is a major crisis, such as a disk failure,
378 tcp-wrappers gives "deny", whereas what one would like would be some
379 kind of temporary error. A kludge has been added to help with this.
380 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
381 554 error is used if errno is still zero or contains ENOENT (which occurs
382 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
383 451 error is used.
384
e173618b
PH
385PH/03 Add -lutil to the default FreeBSD LIBS setting.
386
dd16e114
PH
387PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
388 errors. Otherwise a message that provokes a temporary error (when other
389 messages do not) can cause a whole host to time out.
390
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391PH/05 Batch deliveries by appendfile and pipe transports did not work when the
392 addresses were routed directly to files or pipes from a redirect router.
393 File deliveries just didn't batch; pipe deliveries might have suffered
394 odd errors.
395
d87df92c
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396PH/06 A failure to get a lock for a hints database would erroneously always say
397 "Failed to get write lock", even when it was really a read lock.
398
7e9f683d
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399PH/07 The appendfile transport was creating MBX lock files with a fixed mode
400 of 0600. This has been changed to use the value of the lockfile_mode
401 option (which defaults to 0600).
402
bfad5236
PH
403PH/08 Applied small patch from the Sieve maintainer.
404
01c490df
PH
405PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
406 folder from quota calculations, a direct delivery into this folder messed
407 up the contents of the maildirsize file. This was because the regex was
408 used only to exclude .Trash (or whatever) when the size of the mailbox
409 was calculated. There was no check that a delivery was happening into an
410 excluded directory. This bug has been fixed by ignoring all quota
411 processing for deliveries into excluded directories.
412
d6629cdc
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413PH/10 Added the maildirfolder_create_regex option to appendfile.
414
1cce3af8 415
214e2000
PH
416Exim version 4.61
417-----------------
418
419PH/01 The code for finding all the local interface addresses on a FreeBSD
420 system running IPv6 was broken. This may well have applied to all BSD
421 systems, as well as to others that have similar system calls. The broken
422 code found IPv4 interfaces correctly, but gave incorrect values for the
423 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
424 that it would not match correctly against @[] and not recognize the IPv6
425 addresses as local.
426
f9daeae0
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427PH/02 The ipliteral router was not recognizing addresses of the form user@
428 [ipv6:....] because it didn't know about the "ipv6:" prefix.
429
7e66e54d
PH
430PH/03 Added disable_ipv6.
431
c8ea1597
PH
432PH/04 Changed $reply_address to use the raw form of the headers instead of the
433 decoded form, because it is most often used to construct To: headers
434 lines in autoreplies, and the decoded form may well be syntactically
435 invalid. However, $reply_address has leading white space removed, and all
436 newlines turned into spaces so that the autoreply transport does not
437 grumble.
438
911f6fde
PH
439PH/05 If group was specified without a user on a router, and no group or user
440 was specified on a transport, the group from the router was ignored.
441
47ca6d6c
PH
442PH/06 Increased the number of ACL variables to 20 of each type, and arranged
443 for visible compile-time settings that can be used to change these
444 numbers, for those that want even more. Backwards compatibility with old
445 spool files has been maintained. However, going back to a previous Exim
446 release will lost any variables that are in spool files.
447
ed0e9820
PH
448PH/07 Two small changes when running in the test harness: increase delay when
449 passing a TCP/IP connection to a new process, in case the original
450 process has to generate a bounce, and remove special handling of
451 127.0.0.2 (sic), which is no longer necessary.
452
eff37e47
PH
453PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
454 be the same on different OS.
455
1921d2ea
PH
456PH/09 Moved a debug statement in filter processing to avoid a race problem when
457 testing.
458
b3f69ca8
JJ
459JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
460 whether --show-vars was specified or not
461
462JJ/02 exipick: Added support for new ACL variable spool format introduced
463 in 4.61-PH/06
464
424a1c63
PH
465PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
466 syntactically invalid From: or Reply-to: line, and a filter used this to
467 generate an autoreply, and therefore failed to obtain an address for the
468 autoreply, Exim could try to deliver to a non-existent relative file
469 name, causing unrelated and misleading errors. What now happens is that
470 it logs this as a hard delivery error, but does not attempt to create a
471 bounce message.
472
7a100415
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473PH/11 The exinext utility has a -C option for testing purposes, but although
474 the given file was scanned by exinext itself; it wasn't being passed on
475 when Exim was called.
476
19b9dc85
PH
477PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
478 an end-of-file indication when reading a command response.
479
309bd837
PH
480PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
481 compiled. In many other places in Exim, IPv6 addresses are always
482 recognized, so I have changed this. It also means that IPv4 domain
483 literals of the form [IPV4:n.n.n.n] are now always recognized.
484
59e82a2a
PH
485PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
486 used if the router is not running as root, for example, when verifying at
487 ACL time, or when using -bh. The debugging output from this situation was
488 non-existent - all you got was a failure to exec. I have made two
489 changes:
490
491 (a) Failures to set uid/gid, the current directory, or a process leader
492 in a subprocess such as that created by queryprogram now generate
493 suitable debugging ouput when -d is set.
494
495 (b) The queryprogram router detects when it is not running as root,
496 outputs suitable debugging information if -d is set, and then runs
497 the subprocess without attempting to change uid/gid.
498
9edc04ce
PH
499PH/15 Minor change to Makefile for building test_host (undocumented testing
500 feature).
501
1349e1e5
PH
502PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
503 additional section of a DNS packet that returns MX or SRV records.
504 Instead, it always explicitly searches for A/AAAA records. This avoids
505 major problems that occur when a DNS server includes only records of one
506 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
507 fixed another bug: if SRV records were looked up and the corresponding
508 address records were *not* found in the additional section, the port
509 values from the SRV records were lost.
510
ea49d0e1
PH
511PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
512 using the correct key (the original address) when searching the retry
513 rules in order to find which one to use for generating the retry hint.
514
064a94c9
PH
515PH/18 If quota_warn_message contains a From: header, Exim now refrains from
516 adding the default one. Similarly, if it contains a Reply-To: header, the
517 errors_reply_to option, if set, is not used.
518
727071f8
PH
519PH/19 When calculating a retry time, Exim used to measure the "time since
520 failure" by looking at the "first failed" field in the retry record. Now
521 it does not use this if it is later than than the arrival time of the
522 message. Instead it uses the arrival time. This makes for better
523 behaviour in cases where some deliveries succeed, thus re-setting the
524 "first failed" field. An example is a quota failure for a huge message
525 when small messages continue to be delivered. Without this change, the
526 "time since failure" will always be short, possible causing more frequent
527 delivery attempts for the huge message than are intended.
dd16e114 528 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 529
f78eb7c6
PH
530PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
531 $1, $2, $3) because the numerical variables can be reset during some
532 expansion items (e.g. "match"), thereby losing the authentication data.
533
21c28500
PH
534PH/21 Make -bV show the size of off_t variables so that the test suite can
535 decide whether to run tests for quotas > 2G.
536
537PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
538 mailbox_size, and mailbox_filecount in the appendfile transport. If a
539 filecount value is greater than 2G or if a quota value is greater than 2G
540 on a system where the size of off_t is not greater than 4, a panic error
541 is given.
542
1688f43b
PH
543PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
544 never match. The debug and -bh output now contains an explicit error
545 message indicating a malformed IPv4 address or mask.
546
547PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
548 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
549 PH/23 above applies.
550
9675b384
PH
551PH/25 Do not write to syslog when running in the test harness. The only
552 occasion when this arises is a failure to open the main or panic logs
553 (for which there is an explicit test).
554
6a3f1455
PH
555PH/26 Added the /no_tell option to "control=freeze".
556
dac79d3e
PH
557PH/27 If a host name lookup failed very early in a connection, for example, if
558 the IP address matched host_lookup and the reverse lookup yielded a name
559 that did not have a forward lookup, an error message of the form "no IP
560 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
561 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 562
5977a0b3
PH
563PH/28 An enabling patch from MH: add new function child_open_exim2() which
564 allows the sender and the authenticated sender to be set when
565 submitting a message from within Exim. Since child_open_exim() is
566 documented for local_scan(), the new function should be too.
567
c91535f3
PH
568PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
569 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
570 results in an empty string is now treated as unset.
571
0d46a8c8
PH
572PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
573
278c6e6c
PH
574PH/31 Added sender_verify_fail logging option.
575
2cbb4081
PH
576PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
577 needed by RFC 822 but not by RFC 2822 was commented out. I have now
578 tidied the source and removed it altogether.
579
3eef829e
PH
580PH/33 When a queue run was abandoned because the load average was too high, a
581 log line was always written; now it is written only if the queue_run log
582 selector is set. In addition, the log line for abandonment now contains
583 information about the queue run such as the pid. This is always present
584 in "start" and "stop" lines but was omitted from the "abandon" line.
585
1ab95fa6
PH
586PH/34 Omit spaces between a header name and the colon in the error message that
587 is given when verify = headers_syntax fails (if there are lots of them,
588 the message gets confusing).
589
230205fc
PH
590PH/35 Change the default for dns_check_names_pattern to allow slashes within
591 names, as there are now some PTR records that contain slashes. This check
592 is only to protect against broken name servers that fall over on strange
593 characters, so the fact that it applies to all lookups doesn't matter.
594
75e0e026
PH
595PH/36 Now that the new test suite is complete, we can remove some of the
596 special code in Exim that was needed for the old test suite. For example,
597 sorting DNS records because real resolvers return them in an arbitrary
598 order. The new test suite's fake resolver always returns records in the
599 same order.
600
601PH/37 When running in the test harness, use -odi for submitted messages (e.g.
602 bounces) except when queue_only is set, to avoid logging races between
603 the different processes.
604
145396a6
PH
605PH/38 Panic-die if .include specifies a non-absolute path.
606
3cd34f13
PH
607PH/39 A tweak to the "H" retry rule from its user.
608
11121d3d
JJ
609JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
610 a label. They prevented compilation on older perls.
611
612JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
613 a warning to be raised on newish perls.
614
615JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
616 on queue. Changes to match documented behaviour of showing count of
617 messages matching specified criteria.
618
8def5aaf
PH
619PH/40 Changed the default ident timeout from 30s to 5s.
620
929ba01c
PH
621PH/41 Added support for the use of login_cap features, on those BSD systems
622 that have them, for controlling the resources used by pipe deliveries.
623
2632889e
PH
624PH/42 The content-scanning code uses fopen() to create files in which to put
625 message data. Previously it was not paying any attention to the mode of
626 the files. Exim runs with umask(0) because the rest of the code creates
627 files with open(), and sets the required mode explicitly. Thus, these
628 files were ending up world-writeable. This was not a big issue, because,
629 being within the spool directory, they were not world-accessible. I have
630 created a function called modefopen, which takes an additional mode
631 argument. It sets umask(777), creates the file, chmods it to the required
632 mode, then resets the umask. All the relevant calls to fopen() in the
633 content scanning code have been changed to use this function.
634
944a9c55
PH
635PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
636 to 24 hours. This avoids potential overflow problems when processing G
637 and H retry rules. I suspect nobody ever tinkers with this value.
638
4a23603b
PH
639PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
640
4730f942
PH
641PH/45 When the plaintext authenticator is running as a client, the server's
642 challenges are checked to ensure they are valid base64 strings. By
643 default, the authentication attempt is cancelled if an invalid string is
644 received. Setting client_ignore_invalid_base64 true ignores these errors.
645 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
646 they are received. Thus, the responses can be made to depend on the
647 challenges. If an invalid string is ignored, an empty string is placed in
648 the variable.
649
30dba1e6
PH
650PH/46 Messages that are created by the autoreply transport now contains a
651 References: header, in accordance with RFCs 2822 and 3834.
652
382afc6b
PH
653PH/47 Added authenticated_sender_force to the smtp transport.
654
a86229cf
PH
655PH/48 The ${prvs expansion was broken on systems where time_t was long long.
656
50c99ba6
PH
657PH/49 Installed latest patch from the Sieve maintainer.
658
d35e429d
PH
659PH/50 When an Exim quota was set without a file count quota, and mailbox_size
660 was also set, the appendfile transport was unnecessarily scanning a
661 directory of message files (e.g. for maildir delivery) to find the count
662 of files (along with the size), even though it did not need this
663 information. It now does the scan only if it needs to find either the
664 size of the count of files.
665
f90d018c
PH
666PH/51 Added ${time_eval: to convert Exim time strings into seconds.
667
75def545
PH
668PH/52 Two bugs concerned with error handling when the smtp transport is
669 used in LMTP mode:
670
671 (i) Exim was not creating retry information for temporary errors given
672 for individual recipients after the DATA command when the smtp transport
673 was used in LMTP mode. This meant that they could be retried too
674 frequently, and not timed out correctly.
675
676 (ii) Exim was setting the flag that allows error details to be returned
677 for LMTP errors on RCPT commands, but not for LMTP errors for individual
678 recipients that were returned after the DATA command.
679
680PH/53 This is related to PH/52, but is more general: for any failing address,
681 when detailed error information was permitted to be returned to the
682 sender, but the error was temporary, then after the final timeout, only
683 "retry timeout exceeded" was returned. Now it returns the full error as
684 well as "retry timeout exceeded".
685
c46782ef
PH
686PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
687 do this, and (what is worse) MTAs that accept it.
688
71fafd95
PH
689PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
690 will now be deprecated.
691
2c5db4fd
PH
692PH/56 New os.c-cygwin from the Cygwin maintainer.
693
9cf6b11a
JJ
694JJ/06 exipick: added --unsorted option to allow unsorted output in all output
695 formats (previously only available in exim formats via -bpr, -bpru,
696 and -bpra. Now also available in native and exiqgrep formats)
697
698JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
699 with very large, slow to parse queues
700
701JJ/08 exipick: added ! as generic prefix to negate any criteria format
702
703JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
704
898d150f
PH
705PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
706 responses to authentication challenges, though it was showing the
707 challenges; (ii) I've removed the CR characters from the debug output for
708 SMTP output lines.
709
46218253
PH
710PH/58 Allow for the insertion of a newline as well as a space when a string
711 is turned into more than one encoded-word during RFC 2047 encoding. The
712 Sieve code now uses this.
713
e97957bc
PH
714PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
715 data_4xx, lost_connection, tls_required.
716
81e509d7
PH
717PH/60 When a VRFY deferred or FAILED, the log message rather than the user
718 message was being sent as an SMTP response.
719
3d240ff7
PH
720PH/61 Add -l and -k options to exicyclog.
721
b37c4101
PH
722PH/62 When verifying, if an address was redirected to one new address, so that
723 verification continued, and the new address failed or deferred after
724 having set something in $address_data, the value of $address_data was not
725 passed back to the ACL. This was different to the case when no
726 redirection occurred. The value is now passed back in both cases.
727
79378e0f
PH
728PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
729 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
730 use login_cap.h, so on its own it isn't the distinguishing feature. The
731 new name refers directly to the setclassresources() function.
732
e49c7bb4
PH
733PH/65 Added configuration files for NetBSD3.
734
d114ec46
PH
735PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
736
f3d7df6c
PH
737PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
738 is preferred over IPv4.
739
715ab376
PH
740PH/68 The bounce_return_message and bounce_return_body options were not being
741 honoured for bounces generated during the reception of non-SMTP messages.
742 In particular, this applied to messages rejected by the ACL. This bug has
743 been fixed. However, if bounce_return_message is true and bounce_return_
744 body is false, the headers that are returned for a non-SMTP message
745 include only those that have been read before the error was detected.
746 (In the case of an ACL rejection, they have all been read.)
747
6b31b150
PH
748PH/69 The HTML version of the specification is now built in a directory called
749 spec_html instead of spec.html, because the latter looks like a path with
750 a MIME-type, and this confuses some software.
751
752PH/70 Catch two compiler warnings in sieve.c.
753
d515a917
PH
754PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
755 function verify_get_ident() calls ip_connect() to connect a socket, but
756 if the "connect()" function timed out, ip_connect() used to close the
757 socket. However, verify_get_ident() also closes the socket later, and in
758 between Exim writes to the log, which may get opened at this point. When
759 the socket was closed in ip_connect(), the log could get the same file
760 descriptor number as the socket. This naturally causes chaos. The fix is
761 not to close the socket in ip_connect(); the socket should be closed by
762 the function that creates it. There was only one place in the code where
763 this was missing, in the iplookup router, which I don't think anybody now
764 uses, but I've fixed it anyway.
765
9b8fadde
PH
766PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
767 well as to direct DNS lookups. Otherwise the handling of names in host
768 lists is inconsistent and therefore confusing.
769
214e2000 770
5de37277
PH
771Exim version 4.60
772-----------------
773
cc38ddbf
PH
774PH/01 Two changes to the default runtime configuration:
775
776 (1) Move the checks for relay_from_hosts and authenticated clients from
777 after to before the (commented out) DNS black list checks.
778
779 (2) Add control=submission to the relay_from_hosts and authenticated
780 clients checks, on the grounds that messages accepted by these
781 statements are most likely to be submissions.
5de37277 782
72fdd6ae
PH
783PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
784
785 (1) Generate an error if the third argument for the ${prvs expansion is
786 not a single digit.
787
788 (2) Treat a missing third argument of ${prvscheck as if it were an empty
789 string.
790
791 (3) Reset the variables that are obtained from the first argument of
792 ${prvscheck and used in the second argument before leaving the code,
793 because their memory is reclaimed, so using them afterwards may do
794 silly things.
795
796 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
797 one (it's much easier than Tom thought :-).
798
799 (5) Because of (4), we can now allow for the use of $prvscheck_result
800 inside the third argument.
cb9328de 801
cb741023
PH
802PH/03 For some reason, the default setting of PATH when running a command from
803 a pipe transport was just "/usr/bin". I have changed it to
804 "/bin:/usr/bin".
805
f174f16e
PH
806PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
807 anything to be listed in the output from -bV.
b2f5a032 808
c25242d7
PH
809PH/05 When a filter generated an autoreply, the entire To: header line was
810 quoted in the delivery log line, like this:
811
812 => >A.N.Other <ano@some.domain> <original@ddress> ...
813
814 This has been changed so that it extracts the operative address. There
815 may be more than one such address. If so, they are comma-separated, like
816 this:
817
818 => >ano@some.domain,ona@other.domain <original@ddress> ...
819
82c19f95
PH
820PH/06 When a client host used a correct literal IP address in a HELO or EHLO
821 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
822 not being looked up in the rDNS to get a host name, Exim was showing the
823 IP address twice in Received: lines, even though the IP addresses were
824 identical. For example:
825
826 Received: from [1.2.3.4] (helo=[1.2.3.4])
827
828 However, if the real host name was known, it was omitting the HELO data
829 if it matched the actual IP address. This has been tidied up so that it
830 doesn't show the same IP address twice.
831
d7ffbc12
PH
832PH/07 When both +timestamp and +memory debugging was on, the value given by
833 $tod_xxx expansions could be wrong, because the tod_stamp() function was
834 called by the debug printing, thereby overwriting the timestamp buffer.
835 Debugging no longer uses the tod_stamp() function when +timestamp is set.
836
9f526266
PH
837PH/08 When the original message was included in an autoreply transport, it
838 always said "this is a copy of the message, including all the headers",
839 even if body_only or headers_only was set. It now gives an appropriate
840 message.
841
87fcc8b9
PH
842PH/09 Applied a patch from the Sieve maintainer which:
843
844 o fixes some comments
845 o adds the (disabled) notify extension core
846 o adds some debug output for the result of if/elsif tests
847 o points to the current vacation draft in the documentation
848 and documents the missing references header update
849
850 and most important:
851
852 o fixes a bug in processing the envelope test (when testing
853 multiple envelope elements, the last element determinted the
854 result)
855
456682f5
PH
856PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
857 Electronic Mail") by including:
858
859 Auto-submitted: auto-generated
860
861 in the messages that it generates (bounce messages and others, such as
862 warnings). In the case of bounce messages for non-SMTP mesages, there was
863 also a typo: it was using "Auto_submitted" (underscore instead of
864 hyphen). Since every message generated by Exim is necessarily in response
865 to another message, thes have all been changed to:
866
867 Auto-Submitted: auto-replied
868
869 in accordance with these statements in the RFC:
870
871 The auto-replied keyword:
872
873 - SHOULD be used on messages sent in direct response to another
874 message by an automatic process,
875
876 - MUST NOT be used on manually-generated messages,
877
878 - MAY be used on Delivery Status Notifications (DSNs) and Message
879 Disposition Notifications (MDNs),
880
881 - MUST NOT be used on messages generated by automatic or periodic
882 processes, except for messages which are automatic responses to
883 other messages.
884
3e46c1aa
PH
885PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
886 to the default Received: header definition.
456682f5 887
49826d12
PH
888PH/12 Added log selector acl_warn_skipped (default on).
889
eba0c039
PH
890PH/13 After a successful wildlsearch lookup, discard the values of numeric
891 variables because (a) they are in the wrong storage pool and (b) even if
892 they were copied, it wouldn't work properly because of the caching.
893
a0d6ba8a
PH
894PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
895 checking when decoding. Apparently there are clients that generate
896 overlong encoded strings. Why am I not surprised?
897
f0917727
PH
898PH/15 If the first argument of "${if match_address" was not empty, but did not
899 contain an "@" character, Exim crashed. Now it writes a panic log message
900 and treats the condition as false.
901
096fee00
PH
902PH/16 In autoreply, treat an empty string for "once" the same as unset.
903
024bd3c2
PH
904PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
905 extension "envelope-auth". The code is finished and in agreement with
906 other implementations, but there is no documentation so far and in fact,
907 nobody wrote the draft yet. This extension is currently #undef'ed, thus
908 not changing the active code.
909
910 Print executed "if" and "elsif" statements when debugging is used. This
911 helps a great deal to understand what a filter does.
912
913 Document more things not specified clearly in RFC3028. I had all this
914 sorted out, when out of a sudden new issues came to my mind. Oops."
915
df199fec
PH
916PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
917 (Bugzilla #53).
918
d27f1df3
PH
919PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
920 canonical form (as documented). However, after a host name lookup from
921 the IP address, check_host() was doing a simple string comparison with
922 addresses acquired from the DNS when checking that the found name did
923 have the original IP as one of its addresses. Since any found IPv6
924 addresses are likely to be in abbreviated form, the comparison could
925 fail. Luckily, there already exists a function for doing the comparison
926 by converting both addresses to binary, so now that is used instead of
927 the text comparison.
928
96776534
PH
929PH/20 There was another similar case to PH/19, when a complete host name was
930 given in a host list; looking up its IP address could give an abbreviated
931 form, whereas the current host's name might or might not be abbreviated.
932 The same fix has been applied.
933
5de37277 934
9a799bc0
PH
935Exim version 4.54
936-----------------
937
938PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
939 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
940 It now does.
941
99a4b039
PH
942PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
943 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
944
945PH/03 Typo: missing ".o" in src/pcre/Makefile.
946
4b233853
PH
947PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
948 header line, restrict the check to what is listed in RFCs 2369 and 2929.
949 Also, for "Auto-Submitted", treat anything other than "no" as
950 non-personal, in accordance with RFC 3834. (Previously it treated
951 anything starting "auto-" as non-personal.)
952
8857ccfd
PH
953TF/01 The control=submission/name=... option had a problem with syntax
954 errors if the name included a slash character. The /name= option
955 now slurps the rest of the string, so it can include any characters
956 but it must come last in the list of options (after /sender_retain
957 or /domain=).
958
433a2980
PH
959PH/05 Some modifications to the interface to the fake nameserver for the new
960 testing suite.
961
3e46c1aa 962
9a799bc0 963
e3a311ba
TK
964Exim version 4.53
965-----------------
966
967TK/01 Added the "success_on_redirect" address verification option. See
968 NewStuff for rationale and an example.
969
13b685f9
PH
970PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
971
395ff96d
PH
972PH/02 Patch to exigrep to allow it to work on syslog lines.
973
5b68f6e4
PH
974PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
975 fread() to skip over the body file's header line, because in Cygwin the
976 header line is locked and is inaccessible.
977
1ab52c69
PH
978PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
979 co-exist for some time) to make it clear that it is the Exim ID that is
980 referenced, not the Message-ID: header line.
981
b07e6aa3
PH
982PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
983 string_format() function, because snprintf() does not exist on all
984 operating systems.
985
254e032f
PH
986PH/06 The use of forbid_filter_existstest now also locks out the use of the
987 ${stat: expansion item.
988
3af76a81
PH
989PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
990 protocol synchronization error", to keep the pedants happy.
991
2548ba04
PH
992PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
993 well as for IRIX systems, when gcc is being used. See the host.c source
994 file for comments.
995
b6c6011d
PH
996PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
997
cf39cf57
PH
998PH/10 Named domain lists were not working if used in a queue_smtp_domains
999 setting.
1000
f1513293
PH
1001PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1002 transport and to the smtp transport in LMTP mode.
1003
727549a4
PH
1004TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1005
af46795e
PH
1006PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1007 run a filter in a subprocess. This could lead to confusion in subsequent
1008 lookups in the parent process. There should also be a search_tidyup() at
1009 the end of the subprocess.
1010
d7b47fd0
PH
1011PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1012 only if the host matched helo_try_verify_hosts, which caused the
1013 verification to occur when the EHLO/HELO command was issued. The ACL just
1014 tested the remembered result. Now, if a previous verification attempt has
1015 not happened, "verify = helo" does it there and then.
1016
ee744174
JJ
1017JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1018
b582ab87
PH
1019TK/03 Fix log output including CR from clamd.
1020
41a13e0a
PH
1021PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1022 exist provoked a memory error which could cause a segfault.
1023
f625cc5a
PH
1024PH/15 Installed PCRE 6.2
1025
1026PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1027
21f7af35
PH
1028PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1029 of the problem. Specifically, suggested +O2 rather than +O1 for the
1030 HP-UX compiler.
1031
31480e42
PH
1032PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1033
2d280592
PH
1034PH/20 If a delivery was routed to a non-standard port by means of an SRV
1035 record, the port was not correctly logged when the outgoing_port log
1036 selector was set (it logged the transort's default port).
1037
7cd1141b
PH
1038PH/21 Added support for host-specific ports to manualroute, queryprogram,
1039 fallback_hosts, and "hosts" in the smtp transport.
1040
1041PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1042 host errors such as "Connection refused".
1043
750af86e
PH
1044PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1045 authentication with radiusclient 0.4.9:
1046
1047 - Error returned from rc_read_config was caught wrongly
1048 - Username/password not passed on to radius server due to wrong length.
1049
1050 The presumption is that some radiusclient API changes for 4.51/PH/17
1051 were not taken care of correctly. The code is still untested by me (my
1052 Linux distribution still has 0.3.2 of radiusclient), but it was
1053 contributed by a Radius user.
1054
1055PH/24 When doing a callout, the value of $domain wasn't set correctly when
1056 expanding the "port" option of the smtp transport.
1057
4304270b
TK
1058TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1059 while reading a MIME header. Thanks to Tom Hughes for a patch.
1060
750af86e
PH
1061PH/24 Include config.h inside local_scan.h so that configuration settings are
1062 available.
1063
64ffc24f
PH
1064PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1065 that in an ACL for RCPT (for example), you can examine exactly what was
1066 received.
1067
5dd9625b
PH
1068PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1069 commands, but it was not correctly comparing the address with the actual
1070 client host address. Thus, it would show the EHLO address in Received:
1071 header lines when this was not necessary.
1072
5591031b
PH
1073PH/27 Added the % operator to ${eval:}.
1074
ba18e66a
PH
1075PH/28 Exim tries to create and chdir to its spool directory when it starts;
1076 it should be ignoring failures (because with -C, for example, it has lost
1077 privilege). It wasn't ignoring creation failures other than "already
1078 exists".
1079
9cec981f
PH
1080PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1081 -bV or -d is used.
1082
aa2b5c79
PH
1083PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1084 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1085 too many continuations, the temporary file was not being removed, and the
1086 return code was incorrect.
aa2b5c79 1087
48a53b7f
PH
1088PH/31 Missing "BOOL" in function definition in filtertest.c.
1089
1c59d63b
PH
1090PH/32 Applied Sieve patches from the maintainer.
1091
671012da
TK
1092TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1093
1509d3a8
PH
1094PH/33 Added "verify = not_blind".
1095
1096PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1097 Local/Makefile (with some defaults set). These are used in built scripts
1098 such as exicyclog, but they have never been used in the exim_install
1099 script (though there are many overriding facilities there). I have
1100 arranged that the exim_install script now takes note of these two
1101 settings.
1102
1103PH/35 Installed configuration files for Dragonfly.
1104
2fe1a124
PH
1105PH/36 When a locally submitted message by a trusted user did not contain a
1106 From: header, and the sender address was obtained from -f or from an SMTP
1107 MAIL command, and the trusted user did not use -F to supply a sender
1108 name, $originator_name was incorrectly used when constructing a From:
1109 header. Furthermore, $originator_name was used for submission mode
1110 messages from external hosts without From: headers in a similar way,
1111 which is clearly wrong.
1112
8800895a
PH
1113PH/37 Added control=suppress_local_fixups.
1114
ccfdb010
PH
1115PH/38 When log_selector = +received_sender was set, and the addition of the
1116 sender made the log line's construction buffer exactly full, or one byte
1117 less than full, an overflow happened when the terminating "\n" was
1118 subsequently added.
1119
1130bfb0
PH
1120PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1121 when the result of a list match is failure because a DNS lookup failed.
1122
ebcb507f
PH
1123PH/40 RM_COMMAND is now used in the building process.
1124
c35e155c
PH
1125PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1126 the "build-* directories that it finds.
1127
95d1f782
PH
1128PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1129 address in a domain literal was a prefix of an interface address.
1130
fd6de02e
PH
1131PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1132 when verifying a sender address, unless rewrite_headers is false.
1133
58de37c5
PH
1134PH/44 Wrote a long comment about why errors_to addresses are verified as
1135 recipients, not senders.
1136
261cf466
TF
1137TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1138 the ratelimit ACL was added.
1139
3ee512ff
PH
1140PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1141
e08c430f
PH
1142PH/46 Added extra information about PostgreSQL errors to the error string.
1143
bef5a11f
PH
1144PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1145 avoiding the need to install special zones in a real server. This is
1146 backwards compatible; if it can't find the fake resolver, it drops back.
1147 Thus, both old and new test suites can be run.
1148
7546de58
TF
1149TF/02 Added util/ratelimit.pl
1150
e5d5a95f
TF
1151TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1152 clock is set back in time.
1153
2e88a017
TF
1154TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1155 Candler <B.Candler@pobox.com>.
1156
a5f65aa4
TF
1157TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1158 OK for addresses that are the result of redirections.
1159
e7726cbf
PH
1160PH/48 A number of further additions for the benefit of the new test suite,
1161 including a fake gethostbyname() that interfaces to the fake DNS resolver
1162 (see PH/47 above).
1163
a7fdad5b
TF
1164TF/06 The fix for widen_domains has also been applied to qualify_single and
1165 search_parents which are the other dnslookup options that can cause
1166 header rewrites.
1167
6af56900
PH
1168PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1169 type ("H").
1170
0925ede6
PH
1171PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1172
66afa403
TF
1173TF/07 Exim produced the error message "an SRV record indicated no SMTP
1174 service" if it encountered an MX record with an empty target hostname.
1175 The message is now "an MX or SRV record indicated no SMTP service".
1176
0154e85a
TF
1177TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1178 if the DNS of the sending site is misconfigured. This is quite a
1179 common situation. This change restores the behaviour of treating a
1180 helo verification defer as a failure.
1181
16f12c76
PH
1182PH/51 If self=fail was set on a router, the bounce message did not include the
1183 actual error message.
1184
bbe902f0 1185
e5a9dba6
PH
1186Exim version 4.52
1187-----------------
1188
1189TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1190
22c3b60b
PH
1191PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1192 command itself ended in error, the underlying message about the transport
1193 filter timeout was being overwritten with the pipe command error. Now the
1194 underlying error message should be appended to the second error message.
1195
06a9b4b5
PH
1196TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1197
c1ac6996
PH
1198PH/02 Reduce the amount of output that "make" produces by default. Full output
1199 can still be requested.
1200
9c7a242c
PH
1201PH/03 The warning log line about a condition test deferring for a "warn" verb
1202 was being output only once per connection, rather than after each
1203 occurrence (because it was using the same function as for successful
1204 "warn" verbs). This seems wrong, so I have changed it.
1205
87ba3f5f
PH
1206TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1207 it should not have, which might have caused a crash in the right
1208 circumstances, but probably never did.
1209
1210PH/04 Installed a modified version of Tony Finch's patch to make submission
1211 mode fix the return path as well as the Sender: header line, and to
1212 add a /name= option so that you can make the user's friendly name appear
1213 in the header line.
1214
29aba418
TF
1215TF/03 Added the control = fakedefer ACL modifier.
1216
fe0dab11
TF
1217TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1218 Mark Lowes for thorough testing.
870f6ba8 1219
11d337a4
TK
1220TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1221
1222TK/03 Merged latest SRS patch from Miles Wilton.
1223
415c8f3b
PH
1224PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1225 with the definition in sysexits.h (which is #included earlier).
1226 Fortunately, Exim does not actually use EX_OK. The code used to try to
1227 preserve the sysexits.h value, by assumimg that macro definitions were
1228 scanned for macro replacements. I have been disabused of this notion,
1229 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1230
958541e9
PH
1231PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1232 in the smtp transport. When a block could not be written in a single
1233 write() function, the timeout was being re-applied to each part-write.
1234 This seems wrong - if the receiver was accepting one byte at a time it
1235 would take for ever. The timeout is now adjusted when this happens. It
1236 doesn't have to be particularly precise.
1237
c206415f
TK
1238TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1239 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1240
2a4be8f9
PH
1241PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1242 without a domain if the check to <postmaster@domain> fails.
1243
1cba11c5
SC
1244SC/01 Eximstats: added -xls and the ability to specify output files
1245 (patch written by Frank Heydlauf).
1246
1247SC/02 Eximstats: use FileHandles for outputing results.
1248
1249SC/03 Eximstats: allow any combination of xls, txt, and html output.
1250
1251SC/04 Eximstats: fixed display of large numbers with -nvr option
1252
1253SC/05 Eximstats: fixed merging of reports with empty tables.
1254
1255SC/06 Eximstats: added the -include_original_destination flag
1256
1257SC/07 Eximstats: removed tabs and trailing whitespace.
1258
1005d00e
TK
1259TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1260
1261TK/06 MBOX spool code: Add real "From " MBOX separator line
1262 so the .eml file is really in mbox format (even though
1263 most programs do not really care). Patch from Alex Miller.
1264
1265TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1266 The latter is generated from $received_to and is only set if the
1267 message has one envelope recipient. SA can use these headers,
1268 obviously out-of-the-box. Patch from Alex Miller.
1269
9b4768fa
PH
1270PH/08 The ${def test on a variable was returning false if the variable's
1271 value was "0", contrary to what the specification has always said!
1272 The result should be true unless the variable is empty.
1273
1274PH/09 The syntax error of a character other than { following "${if
1275 def:variable_name" (after optional whitespace) was not being diagnosed.
1276 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1277 accidental colon was present, for example, could give incorrect results.
1278
0d7eb84a
PH
1279PH/10 Tidied the code in a number of places where the st_size field of a stat()
1280 result is used (not including appendfile, where other changes are about
1281 to be made).
1282
1283PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1284 This involved changing a lot of size variables from int to off_t. It
1285 should work with maildirs and everything.
1286
40727bee
TK
1287TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1288 spamd dying while we are connected to it.
1289
554d2369
TF
1290TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1291 <jgh@wizmail.org>
1292
1f922db1
PH
1293PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1294 function for BDB 4.3.
1295
ef213c3b
PH
1296PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1297
8ac170f3
PH
1298PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1299 the sources for PCRE have been re-arranged and more files are now
1300 involved.
1301
b1c749bb
PH
1302PH/15 The code I had for printing potentially long long variables in PH/11
1303 above was not the best (it lost precision). The length of off_t variables
1304 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1305 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1306 to be "long long int" or "long int". This is needed for the internal
1307 formatting function string_vformat().
b1c749bb 1308
4aac9b49
PH
1309PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1310 the configuration file to be ":syslog", then the script "guesses" where
1311 the logs files are, rather than using the compiled in default. In our
1312 case the guess is not the same as the compiled default, so the script
1313 suddenly stopped working when I started to use syslog. The patch checks
1314 to see if log_file_path is "". If so, it attempts to read it from exim
1315 with no configuration file to get the compiled in version, before it
1316 falls back to the previous guessing code."
1317
294520c8
TK
1318TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1319 implementing BATV in an Exim configuration. See NewStuff for the gory
1320 details.
1321
5bd022fe
PH
1322PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1323 Makefile that are specific to HP-UX.
1324
90e9ce59
PH
1325PH/18 If the "use_postmaster" option was set for a recipient callout together
1326 with the "random" option, the postmaster address was used as the MAIL
1327 FROM address for the random test, but not for the subsequent recipient
1328 test. It is now used for both.
1329
5ea81592
PH
1330PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1331 patch removes a few documentation additions to RFC 3028, because the
1332 latest draft now contains them. It adds the new en;ascii-case comparator
1333 and a new error check for 8bit text in MIME parts. Comparator and
1334 require names are now matched exactly. I enabled the subaddress
1335 extension, but it is not well tested yet (read: it works for me)."
1336
c6c2dc1d
PH
1337PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1338 rework some of the code of TK/09 above to avoid the hardwired use of
1339 "%lld" and "long long". Replaced the call to snprintf() with a call to
1340 string_vformat().
1341
fffffe4c
PH
1342PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1343 records point to non-existent hosts", "retry timeout exceeded", and
1344 "retry time not reached for any host after a long failure period".
ca02eafb 1345
9a26b6b2
PH
1346PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1347 experimental DomainKeys support:
1348
1349 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1350 (2) On an error such as an illegally used "control", the wrong name for
1351 the control was given.
1352
1353 These problems did NOT occur unless DomainKeys support was compiled.
1354
4aee0225
PH
1355PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1356
32d668a5
PH
1357PH/24 Added ${if match_ip condition.
1358
8187c3f3
PH
1359PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1360 databases so that it will be absolutely obvious if a crash occurs in the
1361 DB library. This is a regular occurrence (often caused by mis-matched
1362 db.h files).
1363
ff790e47 1364PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1365 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1366 picked up on a user's system that detects such things. There doesn't seem
1367 to be a gcc warning option for this - only an attribute that has to be
1368 put on the function's prototype. It seems that in Fedora Core 4 they have
1369 set this on a number of new functions. No doubt there will be more in due
1370 course.
ff790e47 1371
5417f6d1
PH
1372PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1373 specify a transport. However, if an address that was verified by such a
1374 router was the subject of a callout, Exim crashed because it tried to
1375 read the rcpt_include_affixes from the non-existent transport. Now it
1376 just assumes that the setting of that option is false. This bug was
1377 introduced by 4.51/PH/31.
1378
59cf8544
PH
1379PH/28 Changed -d+all to exclude +memory, because that information is very
1380 rarely of interest, but it makes the output a lot bigger. People tend to
1381 do -d+all out of habit.
1382
e7ad8a65
PH
1383PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1384 code in os-type was giving problems when libc.so lives in lib64, like on
1385 x86_64 Fedora Core.
1386
ade42478
PH
1387PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1388 aren't the modern standard, and it seems that some systems' include files
1389 don't always have them. Exim was already checking for some of the newer
1390 ones like T_AAAA, and defining it itself. I've added checks for all the
1391 record types that Exim uses.
1392
182ad5cf
PH
1393PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1394 not automatically generating a new one, as it is supposed to. This
1395 prevented TLS from working. If the file did exist, but contained invalid
1396 data, a new version was generated, as expected. It was only the case of a
1397 non-existent file that was broken.
1398
b0d9fc80
TK
1399TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1400 with a change in libdomainkeys > 0.64.
1401
1402TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1403 from DNS. If the selector record carries the flag, it now has
1404 precedence over the domain-wide flag.
1405
1406TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1407
47c7a64a
PH
1408PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1409 the use of a port name that isn't defined in /etc/services) occurred, the
1410 message was deferred as in a normal delivery, and thus remained on the
1411 spool, instead of being failed because of the mua_wrapper setting. This
1412 is now fixed, and I tidied up some of the mua_wrapper messages at the
1413 same time.
1414
a388bce4
SC
1415SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1416 the messages in a hash of arrays rather than using individual hashes.
1417 This is a bit cleaner and results in dramatic memory savings, albeit
1418 at a slight CPU cost.
1419
1420SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1421 as requested by Marc Sherman.
1422
1423SC/10 Eximstats: added histograms for user specified patterns as requested
1424 by Marc Sherman.
1425
0793e4ed
SC
1426SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1427
c58b88df
PH
1428PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1429 fopen() in the content-scanning modules that did not already have it.
1430
e7ad8a65 1431
7982096b
PH
1432Exim version 4.51
1433-----------------
1434
1a46a8c5
PH
1435TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1436 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1437
2f079f46 1438TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1439
1440TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1441
1442PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1443 to test Sieve filters that use "vacation".
1444
1445PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1446 that changes the way the GnuTLS parameters are stored in the cache file.
1447 The new format can be generated externally. For backward compatibility,
1448 if the data in the cache doesn't make sense, Exim assumes it has read an
1449 old-format file, and it generates new data and writes a new file. This
1450 means that you can't go back to an older release without removing the
1451 file.
1452
1453PH/03 A redirect router that has both "unseen" and "one_time" set does not
1454 work if there are any delivery delays because "one_time" forces the
1455 parent to be marked "delivered", so its unseen clone is never tried
1456 again. For this reason, Exim now forbids the simultaneous setting of
1457 these two options.
1458
1459PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1460 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1461 entry if you want to know the details. The fix, however, neglected to
1462 consider the case when local delivery batching is involved. The test for
1463 "previously delivered" was not happening when checking to see if an
1464 address could be batched with a previous (undelivered) one; under
1465 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1466 address.
1a46a8c5
PH
1467
1468PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1469 in its include files, and this causes problems building Exim.
1470
1471PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1472 header_syntax) but Exim was just ignoring anything given after a slash.
1473 In particular, this caused confusion with an attempt to use "verify =
1474 reverse_host_lookup/defer_ok". An error is now given when options are
1475 supplied for verify items that do not have them. (Maybe reverse_host_
1476 lookup should have a defer_ok option, but that's a different point.)
1477
1478PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1479 defined by RFC 821) to 2048, because there were problems with some AUTH
1480 commands, and RFC 1869 says the size should be increased for extended
1481 SMTP commands that take arguments.
1482
1483PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1484 Finch).
1485
1486PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1487 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1488
49c2d5ea
PH
1489PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1490 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1491 whatever). Otherwise the password may appear in the log. Following change
1492 PH/42 below, there is no longer a chance of it appearing in a bounce
1493 message.
49c2d5ea 1494
bf759a8b
PH
1495PH/11 Installed exipick version 20050225.0 from John Jetmore.
1496
83364d30
PH
1497PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1498 of its addresses was ever tried. (Bugzilla bug #2.)
1499
7999bbd7
PH
1500PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1501 the result incorrectly in the debug output. (It correctly added a newline
1502 to what was transported.)
1503
7dbf77c9
PH
1504TF/01 Added $received_time.
1505
74e0617f
PH
1506PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1507 commented out examples of how to interface to a virus scanner and to
1508 SpamAssassin. Also added commented examples of av_scanner and
1509 spamd_address settings.
1510
2f079f46
PH
1511PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1512 and controls are allowed in which ACLs. There were a couple of minor
1513 errors. Some of the entries in the conditions table (which is a table of
1514 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1515 negation of where the condition IS allowed.
1516
8c841523
PH
1517PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1518
7766a4f0
PH
1519PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1520 header file does not have a version number, so I've had to invent a new
1521 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1522 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1523 radiusclient), but it was contributed by a Radius user.
1524
8b417f2c
PH
1525PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1526 files or directories, for OpenSSL.
1527
901f42cb
PH
1528PH/19 When an Exim process that is running as root has to create an Exim log
1529 file, it does so in a subprocess that runs as exim:exim so as to get the
1530 ownership right at creation (otherwise, other Exim processes might see
1531 the file with the wrong ownership). There was no test for failure of this
1532 fork() call, which would lead to the process getting stuck as it waited
1533 for a non-existent subprocess. Forks do occasionally fail when resources
1534 run out. I reviewed all the other calls to fork(); they all seem to check
1535 for failure.
1536
f9b9210e
PH
1537PH/20 When checking for unexpected SMTP input at connect time (before writing
1538 the banner), Exim was not dealing correctly with a non-positive return
1539 from the read() function. If the client had disconnected by this time,
1540 the result was a log entry for a synchronization error with an empty
1541 string after "input=" when read() returned zero. If read() returned -1
1542 (an event I could not check), uninitialized data bytes were printed.
1543 There were reports of junk text (parts of files, etc) appearing after
1544 "input=".
1545
54cdb463
PH
1546PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1547
cf00dad6
PH
1548PH/22 Added support for macro redefinition, and (re)definition in between
1549 driver and ACL definitions.
1550
acb1b346
PH
1551PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1552 forgetting to use the resulting value; it was using the unexpanded value.
1553
c5ddb310
PH
1554PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1555 hadn't been configured. The fix is from Juergen Kreileder, who
1556 understands it better than I do:
1557
1558 "Here's what I see happening with three configured cyrus_sasl
1559 authenticators configured (plain, login, cram-md5):
1560
1561 On startup auth_cyrus_sasl_init() gets called for each of these.
1562 This means three calls to sasl_listmech() without a specified mech_list.
1563 => SASL tests which mechs of all available mechs actually work
1564 => three warnings about OTP not working
1565 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1566
1567 With the patch, sasl_listmech() also gets called three times. But now
1568 SASL's mech_list option is set to the server_mech specified in the the
1569 authenticator. Or in other words, the answer from sasl_listmech()
1570 gets limited to just the mech you're testing for (which is different
1571 for each call.)
1572 => the return list contains just 'plain' or 'login', 'cram-md5' or
1573 nothing depending on the value of ob->server_mech.
1574
1575 I've just tested the patch: Authentication still works fine,
1576 unavailable mechs specified in the exim configuration are still
1577 caught, and the auth.log warnings about OTP are gone."
1578
31619da6
PH
1579PH/25 When debugging is enabled, the contents of the command line are added
1580 to the debugging output, even when log_selector=+arguments is not
1581 specified.
1582
bebaf0fc
PH
1583PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1584 answer is "GNU", and only if the return is "GNU/something" is the answer
1585 "Linux".
1586
475fe28a
PH
1587PH/27 $acl_verify_message is now set immediately after the failure of a
1588 verification in an ACL, and so is available in subsequent modifiers. In
1589 particular, the message can be preserved by coding like this:
1590
1591 warn !verify = sender
1592 set acl_m0 = $acl_verify_message
1593
1594 Previously, $acl_verify_message was set only while expanding "message"
1595 and "log_message" when a very denied access.
1596
7e8bec7a
PH
1597PH/28 Modified OS/os.c-Linux with
1598
1599 -#ifndef OS_LOAD_AVERAGE
1600 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1601
1602 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1603 nomenclature these days.)
1604
e4a89c47
PH
1605PH/29 Installed patch from the Sieve maintainer that adds the options
1606 sieve_useraddress and sieve_subaddress to the redirect router.
1607
5ca2a9a1
PH
1608PH/30 In these circumstances:
1609 . Two addresses routed to the same list of hosts;
1610 . First host does not offer TLS;
1611 . First host accepts first address;
1612 . First host gives temporary error to second address;
1613 . Second host offers TLS and a TLS session is established;
1614 . Second host accepts second address.
1615 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1616 and peerdn, if requested) that were in fact used only for the second
1617 address.
7e8bec7a 1618
c688b954
PH
1619PH/31 When doing a callout as part of verifying an address, Exim was not paying
1620 attention to any local part prefix or suffix that was matched by the
1621 router that accepted the address. It now behaves in the same way as it
1622 does for delivery: the affixes are removed from the local part unless
1623 rcpt_include_affixes is set on the transport.
1624
fed77020
PH
1625PH/32 Add the sender address, as F=<...>, to the log line when logging a
1626 timeout during the DATA phase of an incoming message.
1627
7fe1560f
PH
1628PH/33 Sieve envelope tests were broken for match types other than :is. I have
1629 applied a patch sanctioned by the Sieve maintainer.
c688b954 1630
ebb6e6d5
PH
1631PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1632 the uid or gid is negative. A case of a negative gid caused this to be
1633 noticed. The fix allows for either to be negative.
1634
9c4e8f60
PH
1635PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1636 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1637 overlooked.
1638
1639PH/36 The change PH/12 above was broken. Fixed it.
1640
d7174846
PH
1641PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1642 the grounds that routing the same address twice would always produce the
1643 same answer. This might have been true once, but it is certainly no
1644 longer true now. Routing a child address may depend on the previous
1645 routing that produced that child. Some complicated redirection strategies
1646 went wrong when messages had multiple recipients, and made Exim's
1647 behaviour dependent on the order in which the addresses were given.
1648
1649 I have moved the duplicate checking until after the routing is complete.
1650 Exim scans the addresses that are assigned to local and remote
1651 transports, and removes any duplicates. This means that more work will be
1652 done, as duplicates will always all be routed, but duplicates are
1653 presumably rare, so I don't expect this is of any significance.
1654
1655 For deliveries to pipes, files, and autoreplies, the duplicate checking
1656 still happens during the routing process, since they are not going to be
1657 routed further.
1658
cfe75fc3
PH
1659PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1660 It corrects a timeout issue with spamd. This is Ian's comment: "The
1661 background is that sometimes spamd either never reads data from a
1662 connection it has accepted, or it never writes response data. The exiscan
1663 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1664 blindly assumes that writes won't block so it may never time out."
1665
be22d70e
PH
1666PH/39 Allow G after quota size as well as K and M.
1667
0612b098
PH
1668PH/40 The value set for $authenticated_id in an authenticator may not contain
1669 binary zeroes or newlines because the value is written to log lines and
1670 to spool files. There was no check on this. Now the value is run through
1671 the string_printing() function so that such characters are converted to
1672 printable escape sequences.
1673
2e0c1448
PH
1674PH/41 $message_linecount is a new variable that contains the total number of
1675 lines in the message. Compare $body_linecount, which is the count for the
1676 body only.
1677
447d236c
PH
1678PH/42 Exim no longer gives details of delivery errors for specific addresses in
1679 bounce and delay warning messages, except in certain special cases, which
1680 are as follows:
1681
1682 (a) An SMTP error message from a remote host;
1683 (b) A message specified in a :fail: redirection;
1684 (c) A message specified in a "fail" command in a system filter;
1685 (d) A message specified in a FAIL return from the queryprogram router;
1686 (e) A message specified by the cannot_route_message router option.
1687
1688 In these cases only, Exim does include the error details in bounce and
1689 warning messages. There are also a few cases where bland messages such
1690 as "unrouteable address" or "local delivery error" are given.
1691
d20976dc
PH
1692PH/43 $value is now also set for the "else" part of a ${run expansion.
1693
f656d135
PH
1694PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1695 being worked on, but at least Exim now implements the latest version to
1696 play with."
1697
2e2a30b4
PH
1698PH/45 In a pipe transport, although a timeout while waiting for the pipe
1699 process to complete was treated as a delivery failure, a timeout while
1700 writing the message to the pipe was logged, but erroneously treated as a
1701 successful delivery. Such timeouts include transport filter timeouts. For
1702 consistency with the overall process timeout, these timeouts are now
1703 treated as errors, giving rise to delivery failures by default. However,
1704 there is now a new Boolean option for the pipe transport called
1705 timeout_defer, which, if set TRUE, converts the failures into defers for
1706 both kinds of timeout. A transport filter timeout is now identified in
1707 the log output.
1708
9176e9f0
PH
1709PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1710 systems where "make" and "gmake" are different, calling "gmake" at top
1711 level broke things. I've arranged for the value of $(MAKE) to be passed
1712 from the Makefile to this script so that it can call the same version of
1713 "make".
1714
7982096b 1715
bbe902f0
PH
1716A note about Exim versions 4.44 and 4.50
1717----------------------------------------
1718
1719Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1720changes of various kinds. As a consequence, a big documentation update was
1721needed. This delayed the release for rather longer than seemed good, especially
1722in the light of a couple of (minor) security issues. Therefore, the changes
1723that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1724release. So 4.44 and 4.50 are in effect two different branches that both start
1725from 4.43.
1726
1727I have left the 4.50 change log unchanged; it contains all the changes since
17284.43. The change log for 4.44 is below; many of its items are identical to
1729those for 4.50. This seems to be the most sensible way to preserve the
1730historical information.
1731
1732
f7b63901 1733Exim version 4.50
495ae4b0
PH
1734-----------------
1735
5fe762f6
PH
1736 1. Minor wording change to the doc/README.SIEVE file.
1737
139059f6 1738 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1739 computation of the current number of files was incorrect.
495ae4b0 1740
7086e875
PH
1741 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1742 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1743 place.
1744
35af9f61
PH
1745 4. Give more explanation in the error message when the command for a transport
1746 filter fails to execute.
1747
b668c215
PH
1748 5. There are several places where Exim runs a non-Exim command in a
1749 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1750 was being done only for the command run by the queryprogram router. It is
1751 now done for all such subprocesses. The other cases are: ${run, transport
1752 filters, and the commands run by the lmtp and pipe transports.
1753
a494b1e1
PH
1754 6. Added CONFIGURE_GROUP build-time option.
1755
1756 7. Some older OS have a limit of 256 on the maximum number of file
1757 descriptors. Exim was using setrlimit() to set 1000 as a large value
1758 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1759 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1760
c5fcb476
PH
1761 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1762 was an oversight, and furthermore, ever since the addition of extra
1763 controls (e.g. 4.43/32), the checks on when to allow different forms of
1764 "control" were broken. There should now be diagnostics for all cases when a
1765 control that does not make sense is encountered.
1766
69358f02
PH
1767 9. Added the /retain_sender option to "control=submission".
1768
5be20824
PH
176910. $recipients is now available in the predata ACL (oversight).
1770
eb2c0248
PH
177111. Tidy the search cache before the fork to do a delivery from a message
1772 received from the command line. Otherwise the child will trigger a lookup
1773 failure and thereby defer the delivery if it tries to use (for example) a
1774 cached ldap connection that the parent has called unbind on.
1775
2a3eea10
PH
177612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1777 of $address_data from the recipient verification was clobbered by the
1778 sender verification.
1779
178013. The value of address_data from a sender verification is now available in
1781 $sender_address_data in subsequent conditions in the ACL statement.
1782
23c7ff99
PH
178314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1784
4deaf07d
PH
178515. Added a new option "connect=<time>" to callout options, to set a different
1786 connection timeout.
1787
926e1192
PH
178816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1789 was its contents. (It was OK if the option was not defined at all.)
1790
650edc6f
PH
179117. A "Completed" log line is now written for messages that are removed from
1792 the spool by the -Mrm option.
1793
2c7db3f5
PH
179418. New variables $sender_verify_failure and $recipient_verify_failure contain
1795 information about exactly what failed.
1796
3d235903
PH
179719. Added -dd to debug only the daemon process.
1798
7c7ad977
PH
179920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1800 handles timeouts, both on the server side and network timeouts. Renamed the
1801 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1802
981756db
PH
180321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1804 It is now set to "smtps".
1805
d4eb88df
PH
180622. $host_address is now set to the target address during the checking of
1807 ignore_target_hosts.
1808
180923. When checking ignore_target_hosts for an ipliteral router, no host name was
1810 being passed; this would have caused $sender_host_name to have been used if
1811 matching the list had actually called for a host name (not very likely,
1812 since this list is usually IP addresses). A host name is now passed as
1813 "[x.x.x.x]".
1814
7d468ab8
PH
181524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1816 code that specifies a non-restarting handler (typically sigaction() in
1817 modern systems) in an attempt to fix a rare and obscure crash bug.
1818
181925. Narrowed the window for a race in the daemon that could cause it to ignore
1820 SIGCHLD signals. This is not a major problem, because they are used only to
1821 wake it up if nothing else does.
1822
62c0818f
PH
182326. A malformed maildirsize file could cause Exim to calculate negative values
1824 for the mailbox size or file count. Odd effects could occur as a result.
1825 The maildirsize information is now recalculated if the size or filecount
1826 end up negative.
1827
26034054
PH
182827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1829 support for a long time. Removed HAVE_SYS_VFS_H.
1830
af66f652
PH
183128. Installed the latest version of exipick from John Jetmore.
1832
90af77f4
PH
183329. In an address list, if the pattern was not a regular expression, an empty
1834 subject address (from a bounce message) matched only if the pattern was an
1835 empty string. Non-empty patterns were not even tested. This was the wrong
1836 because it is perfectly reasonable to use an empty address as part of a
1837 database query. An empty address is now tested by patterns that are
1838 lookups. However, all the other forms of pattern expect the subject to
1839 contain a local part and a domain, and therefore, for them, an empty
1840 address still always fails if the pattern is not itself empty.
1841
d8ef3577
PH
184230. Exim went into a mad DNS loop when attempting to do a callout where the
1843 host was specified on an smtp transport, and looking it up yielded more
1844 than one IP address.
1845
5cb8cbc6
PH
184631. Re-factored the code for checking spool and log partition space into a
1847 function that finds that data and another that does the check. The former
1848 is then used to implement four new variables: $spool_space, $log_space,
1849 $spool_inodes, and $log_inodes.
1850
14702f5b
PH
185132. The RFC2047 encoding function was originally intended for short strings
1852 such as real names; it was not keeping to the 75-character limit for
1853 encoded words that the RFC imposes. It now respects the limit, and
1854 generates multiple encoded words if necessary. To be on the safe side, I
1855 have increased the buffer size for the ${rfc2047: expansion operator from
1856 1024 to 2048 bytes.
1857
063b1e99
PH
185833. It is now permitted to omit both strings after an "if" condition; if the
1859 condition is true, the result is "true". As before, when the second string
1860 is omitted, a false condition yields an empty string. This makes it less
1861 cumbersome to write custom ACL and router conditions.
1862
652e1b65
PH
186334. Failure to deliver a bounce message always caused it to be frozen, even if
1864 there was an errors_to setting on the router. The errors_to setting is now
1865 respected.
1866
6f0c9a4f
PH
186735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1868 canonical form (fully expanded) before being placed in
1869 $sender_host_address.
1870
33397d19
PH
187136. The table in the code that translates DNS record types into text (T_A to
1872 "A" for instance) was missing entries for NS and CNAME. It is just possible
1873 that this could have caused confusion if both these types were looked up
1874 for the same domain, because the text type is used as part of Exim's
1875 per-process caching. But the chance of anyone hitting this buglet seems
1876 very small.
1877
7bb56e1f
PH
187837. The dnsdb lookup has been extended in a number of ways.
1879
1880 (1) There is a new type, "zns", which walks up the domain tree until it
1881 finds some nameserver records. It should be used with care.
1882
ea3bc19b
PH
1883 (2) There is a new type, "mxh", which is like "mx" except that it returns
1884 just the host names, not the priorities.
1885
1886 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1887 looked up. The behaviour when one of the lookups defers can be
1888 controlled by a keyword.
7bb56e1f 1889
ea3bc19b 1890 (4) It is now possible to specify the separator character for use when
7bb56e1f 1891 multiple records are returned.
33397d19 1892
0bcb2a0e
PH
189338. The dnslists ACL condition has been extended: it is now possible to supply
1894 a list of IP addresses and/or domains to be looked up in a particular DNS
1895 domain.
1896
2ac0e484
PH
189739. Added log_selector=+queue_time_overall.
1898
4e1fde53
PH
189940. When running the queue in the test harness, wait just a tad after forking a
1900 delivery process, to get repeatability of debugging output.
1901
de365ded
PH
190241. Include certificate and key file names in error message when GnuTLS fails
1903 to set them up, because the GnuTLS error message doesn't include the name
1904 of the failing file when there is a problem reading it.
1905
f05da2e8
PH
190642. Allow both -bf and -bF in the same test run.
1907
d6453af2
PH
190843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1909
f7b63901
PH
191044. The "Exiscan patch" is now merged into the mainline Exim source.
1911
191245. Sometimes the final signoff response after QUIT could fail to get
1913 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1914 < 0 before doing a fflush(). This bug looks as though it goes back to the
1915 introduction of TLS in release 3.20, but "sometimes" must have been rare
1916 because the tests only now provoked it.
1917
a444213a
PH
191846. Reset the locale to "C" after calling embedded Perl, in case it was changed
1919 (this can affect the format of dates).
1920
0ec020ea
PH
192147. exim_tidydb, when checking for the continued existence of a message for
1922 which it has found a message-specific retry record, was not finding
1923 messages that were in split spool directories. Consequently, it was
1924 deleting retry records that should have stayed in existence.
1925
b1206957
PH
192648. Steve fixed some bugs in eximstats.
1927
192849. The SPA authentication driver was not abandoning authentication and moving
1929 on to the next authenticator when an expansion was forced to fail,
1930 contradicting the general specification for all authenticators. Instead it
1931 was generating a temporary error. It now behaves as specified.
1932
26dd5a95
PH
193350. The default ordering of permitted cipher suites for GnuTLS was pessimal
1934 (the order specifies the preference for clients). The order is now AES256,
1935 AES128, 3DES, ARCFOUR128.
1936
343b2385
PH
193751. Small patch to Sieve code - explicitly set From: when generating an
1938 autoreply.
1939
1c5466b9
PH
194052. Exim crashed if a remote delivery caused a very long error message to be
1941 recorded - for instance if somebody sent an entire SpamAssassin report back
1942 as a large number of 550 error lines. This bug was coincidentally fixed by
1943 increasing the size of one of Exim's internal buffers (big_buffer) that
1944 happened as part of the Exiscan merge. However, to be on the safe side, I
1945 have made the code more robust (and fixed the comments that describe what
1946 is going on).
1947
55ee9ee3
PH
194853. Now that there can be additional text after "Completed" in log lines (if
1949 the queue_time_overall log selector is set), a one-byte patch to exigrep
1950 was needed to allow it to recognize "Completed" as not the last thing in
1951 the line.
1952
d38f8232
PH
195354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1954 patch that reportedly fixes this has been added. I am not expert enough to
1955 create a test for it. This is what the patch creator wrote:
1956
1957 "I found a little strange behaviour of ldap code when working with
1958 Windows 2003 AD Domain, where users was placed in more than one
1959 Organization Units. When I tried to give exim partial DN, the exit code
1960 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1961 But simultaneously result of request was absolutely normal ldap result,
1962 so I produce this patch..."
1963
3295e65b
PH
1964 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1965 REFERENCE, so I have modified the code to exclude the patch when that macro
1966 is not defined.
1967
7102e136
PH
196855. Some experimental protocols are using DNS PTR records for new purposes. The
1969 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1970 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1971 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1972 CAN-2005-0021
7102e136 1973
3ca0ba97
PH
197456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1975
c2bcbe20
PH
197657. Double the size of the debug message buffer (to 2048) so that more of very
1977 long debug lines gets shown.
1978
18ce445d
PH
197958. The exicyclog utility now does better if the number of log files to keep
1980 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1981
1f5b4c3d
PH
198259. Two changes related to the smtp_active_hostname option:
1983
1984 (1) $smtp_active_hostname is now available as a variable.
1985 (2) The default for smtp_banner uses $smtp_active_hostname instead
1986 of $primary_hostname.
1987
b975ba52
PH
198860. The host_aton() function is supposed to be passed a string that is known
1989 to be a valid IP address. However, in the case of IPv6 addresses, it was
1990 not checking this. This is a hostage to fortune. Exim now panics and dies
1991 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1992 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1993 components; fortuitously, this particular loophole had already been fixed
1994 by change 4.50/55 above.
1995
1996 If there are any other similar loopholes, the new check in host_aton()
1997 itself should stop them being exploited. The report I received stated that
1998 data on the command line could provoke the exploit when Exim was running as
1999 exim, but did not say which command line option was involved. All I could
2000 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2001 running as the user.
ea3a6f44 2002 CAN-2005-0021
85b87bc2
PH
2003
200461. There was a buffer overflow vulnerability in the SPA authentication code
2005 (which came originally from the Samba project). I have added a test to the
2006 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2007 CAN-2005-0022
b975ba52 2008
17ffcae7
PH
200962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2010 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2011
d95f9fdb
PH
201263. The daemon start-up calls getloadavg() while still root for those OS that
2013 need the first call to be done as root, but it missed one case: when
2014 deliver_queue_load_max is set with deliver_drop_privilege. This is
2015 necessary for the benefit of the queue runner, because there is no re-exec
2016 when deliver_drop_privilege is set.
2017
86b8287f
PH
201864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2019 This has been fixed.
2020
60dc5e56
PH
202165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2022 was in use, was not putting the data itself into the right store pool;
2023 consequently, it could be overwritten for a subsequent message in the same
2024 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2025 the caching.)
2026
533244af
PH
202766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2028
a5a28604
PH
202967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2030 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2031 the function were treating the return as a boolean value, which happened to
2032 work because 0=false and not-0=true, but is not correct code.
2033
7e634d24
PH
203468. The host_aton() function was not handling scoped IPv6 addresses (those
2035 with, for example, "%eth0" on the end) correctly.
2036
3e11c26b
PH
203769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2038 negated items (that is, ~something) in unsigned ints. Some compilers
2039 apparently mutter when there is no cast.
2040
6729cf78
PH
204170. If an address verification called from an ACL failed, and did not produce a
2042 user-specific message (i.e. there was only a "system" message), nothing was
2043 put in $acl_verify_message. In this situation, it now puts the system
2044 message there.
2045
00f00ca5
PH
204671. Change 4.23/11 added synchronization checking at the start of an SMTP
2047 session; change 4.31/43 added the unwanted input to the log line - except
2048 that it did not do this in the start of session case. It now does.
2049
c9bdd01c
PH
205072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2051 This is wrong and can cause the other end to generate a synchronization
2052 error if it is another Exim or anything else that does the synchronization
2053 check. A QUIT command is no longer sent after a timeout.
2054
d43194df
PH
205573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2056 during host lookups.
2057
fe5b5d0b
PH
205874. The defer_ok option of callout verification was not working if it was used
2059 when verifying addresses in header lines, that is, for this case:
2060
2061 verify = header_sender/callout=defer_ok
2062
76a2d7ba
PH
206375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2064 those file descriptors could be used for SMTP connections. If anything
2065 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2066 could be sent to the SMTP client, causing chaos. The daemon now opens
2067 stdin, stdout, and stderr to /dev/null when it puts itself into the
2068 background.
2069
207076. Arrange for output from Perl's "warn" command to be written to Exim's main
2071 log by default. The user can override this with suitable Perl magic.
2072
04f7d5b9
PH
207377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2074 the log message when discard triggers, was not working for the DATA ACL or
2075 for the non-SMTP ACL.
2076
bc60667e
PH
207778. Error message wording change in sieve.c.
2078
bb6e88ff
PH
207979. If smtp_accept_max_per_host was set, the number of connections could be
2080 restricted to fewer than expected, because the daemon was trying to set up
2081 a new connection before checking whether the processes handling previous
2082 connections had finished. The check for completed processes is now done
2083 earlier. On busy systems, this bug wouldn't be noticed because something
2084 else would have woken the daemon, and it would have reaped the completed
2085 process earlier.
2086
1e70f85b
PH
208780. If a message was submitted locally by a user whose login name contained one
2088 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2089 It caused a spool format error. I have fixed the spool reading code. A
2090 related problem was that the "from" clause in the Received: line became
2091 illegal because of the space(s). It is now covered by ${quote_local_part.
2092
209381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2094 tables).
2095
4e01f9d6
PH
209682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2097
1ee1cef2
PH
209883. Patch from Sieve maintainer to fix unterminated string problem in
2099 "vacation" handling.
2100
6e2b4ccc
PH
210184. Some minor changes to the Linux configuration files to help with other
2102 OS variants using glibc.
2103
8e669ac1
PH
210485. One more patch for Sieve to update vacation handling to latest spec.
2105
495ae4b0 2106
bbe902f0
PH
2107----------------------------------------------------
2108See the note above about the 4.44 and 4.50 releases.
2109----------------------------------------------------
2110
2111
2112Exim version 4.44
2113-----------------
2114
2115 1. Change 4.43/35 introduced a bug that caused file counts to be
2116 incorrectly computed when quota_filecount was set in an appendfile
2117 transport
2118
2119 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2120 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2121 place.
2122
2123 3. Give more explanation in the error message when the command for a transport
2124 filter fails to execute.
2125
2126 4. There are several places where Exim runs a non-Exim command in a
2127 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2128 was being done only for the command run by the queryprogram router. It is
2129 now done for all such subprocesses. The other cases are: ${run, transport
2130 filters, and the commands run by the lmtp and pipe transports.
2131
2132 5. Some older OS have a limit of 256 on the maximum number of file
2133 descriptors. Exim was using setrlimit() to set 1000 as a large value
2134 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2135 systems. I've change it so that if it can't get 1000, it tries for 256.
2136
2137 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2138 was an oversight, and furthermore, ever since the addition of extra
2139 controls (e.g. 4.43/32), the checks on when to allow different forms of
2140 "control" were broken. There should now be diagnostics for all cases when a
2141 control that does not make sense is encountered.
2142
2143 7. $recipients is now available in the predata ACL (oversight).
2144
2145 8. Tidy the search cache before the fork to do a delivery from a message
2146 received from the command line. Otherwise the child will trigger a lookup
2147 failure and thereby defer the delivery if it tries to use (for example) a
2148 cached ldap connection that the parent has called unbind on.
2149
2150 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2151 of $address_data from the recipient verification was clobbered by the
2152 sender verification.
2153
215410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2155 was its contents. (It was OK if the option was not defined at all.)
2156
215711. A "Completed" log line is now written for messages that are removed from
2158 the spool by the -Mrm option.
2159
216012. $host_address is now set to the target address during the checking of
2161 ignore_target_hosts.
2162
216313. When checking ignore_target_hosts for an ipliteral router, no host name was
2164 being passed; this would have caused $sender_host_name to have been used if
2165 matching the list had actually called for a host name (not very likely,
2166 since this list is usually IP addresses). A host name is now passed as
2167 "[x.x.x.x]".
2168
216914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2170 code that specifies a non-restarting handler (typically sigaction() in
2171 modern systems) in an attempt to fix a rare and obscure crash bug.
2172
217315. Narrowed the window for a race in the daemon that could cause it to ignore
2174 SIGCHLD signals. This is not a major problem, because they are used only to
2175 wake it up if nothing else does.
2176
217716. A malformed maildirsize file could cause Exim to calculate negative values
2178 for the mailbox size or file count. Odd effects could occur as a result.
2179 The maildirsize information is now recalculated if the size or filecount
2180 end up negative.
2181
218217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2183 support for a long time. Removed HAVE_SYS_VFS_H.
2184
ea3a6f44 218518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2186
218719. Allow an empty sender to be matched against a lookup in an address list.
2188 Previously the only cases considered were a regular expression, or an
2189 empty pattern.
2190
219120. Exim went into a mad DNS lookup loop when doing a callout where the
2192 host was specified on the transport, if the DNS lookup yielded more than
2193 one IP address.
2194
ea3a6f44
NM
219521. The RFC2047 encoding function was originally intended for short strings
2196 such as real names; it was not keeping to the 75-character limit for
2197 encoded words that the RFC imposes. It now respects the limit, and
2198 generates multiple encoded words if necessary. To be on the safe side, I
2199 have increased the buffer size for the ${rfc2047: expansion operator from
2200 1024 to 2048 bytes.
bbe902f0 2201
ea3a6f44
NM
220222. Failure to deliver a bounce message always caused it to be frozen, even if
2203 there was an errors_to setting on the router. The errors_to setting is now
2204 respected.
bbe902f0
PH
2205
220623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2207 canonical form (fully expanded) before being placed in
2208 $sender_host_address.
2209
221024. Updated eximstats to version 1.33
2211
ea3a6f44
NM
221225. Include certificate and key file names in error message when GnuTLS fails
2213 to set them up, because the GnuTLS error message doesn't include the name
2214 of the failing file when there is a problem reading it.
bbe902f0
PH
2215
221626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2217 As per change 25.
bbe902f0 2218
ea3a6f44
NM
221927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2220 (this can affect the format of dates).
bbe902f0 2221
ea3a6f44
NM
222228. exim_tidydb, when checking for the continued existence of a message for
2223 which it has found a message-specific retry record, was not finding
2224 messages that were in split spool directories. Consequently, it was
2225 deleting retry records that should have stayed in existence.
bbe902f0
PH
2226
222729. eximstats updated to version 1.35
2228 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2229 1.35 - bugfix such that pie charts by volume are generated correctly
2230
ea3a6f44
NM
223130. The SPA authentication driver was not abandoning authentication and moving
2232 on to the next authenticator when an expansion was forced to fail,
2233 contradicting the general specification for all authenticators. Instead it
2234 was generating a temporary error. It now behaves as specified.
bbe902f0 2235
ea3a6f44
NM
223631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2237 (the order specifies the preference for clients). The order is now AES256,
2238 AES128, 3DES, ARCFOUR128.
bbe902f0 2239
ea3a6f44
NM
224031. Small patch to Sieve code - explicitly set From: when generating an
2241 autoreply.
bbe902f0 2242
ea3a6f44
NM
224332. Exim crashed if a remote delivery caused a very long error message to be
2244 recorded - for instance if somebody sent an entire SpamAssassin report back
2245 as a large number of 550 error lines. This bug was coincidentally fixed by
2246 increasing the size of one of Exim's internal buffers (big_buffer) that
2247 happened as part of the Exiscan merge. However, to be on the safe side, I
2248 have made the code more robust (and fixed the comments that describe what
2249 is going on).
bbe902f0 2250
ea3a6f44
NM
225133. Some experimental protocols are using DNS PTR records for new purposes. The
2252 keys for these records are domain names, not reversed IP addresses. The
2253 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2254 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2255 CAN-2005-0021
2256
ea3a6f44
NM
225734. The host_aton() function is supposed to be passed a string that is known
2258 to be a valid IP address. However, in the case of IPv6 addresses, it was
2259 not checking this. This is a hostage to fortune. Exim now panics and dies
2260 if the condition is not met. A case was found where this could be provoked
2261 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2262 components; fortuitously, this particular loophole had already been fixed
2263 by change 4.50/55 or 4.44/33 above.
2264
2265 If there are any other similar loopholes, the new check in host_aton()
2266 itself should stop them being exploited. The report I received stated that
2267 data on the command line could provoke the exploit when Exim was running as
2268 exim, but did not say which command line option was involved. All I could
2269 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2270 running as the user.
bbe902f0
PH
2271 CAN-2005-0021
2272
ea3a6f44
NM
227335. There was a buffer overflow vulnerability in the SPA authentication code
2274 (which came originally from the Samba project). I have added a test to the
2275 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2276 CAN-2005-0022
2277
ea3a6f44
NM
227836. The daemon start-up calls getloadavg() while still root for those OS that
2279 need the first call to be done as root, but it missed one case: when
2280 deliver_queue_load_max is set with deliver_drop_privilege. This is
2281 necessary for the benefit of the queue runner, because there is no re-exec
2282 when deliver_drop_privilege is set.
bbe902f0 2283
ea3a6f44
NM
228437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2285 was in use, was not putting the data itself into the right store pool;
2286 consequently, it could be overwritten for a subsequent message in the same
2287 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2288 the caching.)
bbe902f0 2289
ea3a6f44
NM
229038. Sometimes the final signoff response after QUIT could fail to get
2291 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2292 < 0 before doing a fflush(). This bug looks as though it goes back to the
2293 introduction of TLS in release 3.20, but "sometimes" must have been rare
2294 because the tests only now provoked it.
bbe902f0
PH
2295
2296
495ae4b0
PH
2297Exim version 4.43
2298-----------------
2299
2300 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2301 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2302 Now it returns an integer. A number of calls were still expecting a T/F
2303 return. Fortuitously, in all cases, the tests worked in OK situations,
2304 which is the norm. However, things would have gone wrong on any write
2305 failures on the smtp file descriptor. This function is used when sending
2306 messages over SMTP and also when doing verify callouts.
2307
2308 2. When Exim is called to do synchronous delivery of a locally submitted
2309 message (the -odf or -odi options), it no longer closes stderr before doing
2310 the delivery.
2311
2312 3. Implemented the mua_wrapper option.
2313
2314 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2315
2316 5. Implemented the functions header_remove(), header_testname(),
2317 header_add_at_position(), and receive_remove_recipient(), and exported them
2318 to local_scan().
2319
2320 6. If an ACL "warn" statement specified the addition of headers, Exim already
2321 inserted X-ACL-Warn: at the start if there was no header name. However, it
2322 was not making this test for the second and subsequent header lines if
2323 there were newlines in the string. This meant that an invalid header could
2324 be inserted if Exim was badly configured.
2325
2326 7. Allow an ACL "warn" statement to add header lines at the start or after all
2327 the Received: headers, as well as at the end.
2328
2329 8. Added the rcpt_4xx retry error code.
2330
2331 9. Added postmaster_mailfrom=xxx to callout verification option.
2332
233310. Added mailfrom=xxxx to the callout verification option, for verify=
2334 header_sender only.
2335
233611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2337 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2338
233912. Inserted some casts to stop certain compilers warning when using pointer
2340 differences as field lengths or precisions in printf-type calls (mostly
2341 affecting debugging statements).
2342
234313. Added optional readline() support for -be (dynamically loaded).
2344
234514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2346 same clock tick as a message's arrival, so that its received time was the
2347 same as the "first fail" time on the retry record, and that message
2348 remained on the queue past the ultimate address timeout, every queue runner
2349 would try a delivery (because it was past the ultimate address timeout) but
2350 after another failure, the ultimate address timeout, which should have then
2351 bounced the address, did not kick in. This was a "< instead of <=" error;
2352 in most cases the first failure would have been in the next clock tick
2353 after the received time, and all would be well.
2354
235515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2356 being recognized when the domain list was tested by the match_domain
2357 condition in an expansion string.
2358
235916. Added the ${str2b64: operator.
2360
236117. Exim was always calling setrlimit() to set a large limit for the number of
2362 processes, without checking whether the existing limit was already
2363 adequate. (It did check for the limit on file descriptors.) Furthermore,
2364 errors from getrlimit() and setrlimit() were being ignored. Now they are
2365 logged to the main and panic logs, but Exim does carry on, to try to do its
2366 job under whatever limits there are.
2367
236818. Imported PCRE 5.0.
2369
237019. Trivial typo in log message " temporarily refused connection" (the leading
2371 space).
2372
237320. If the log selector return_path_on_delivery was set and an address was
2374 redirected to /dev/null, the delivery process crashed because it assumed
2375 that a return path would always be set for a "successful" delivery. In this
2376 case, the whole delivery is bypassed as an optimization, and therefore no
2377 return path is set.
2378
237921. Internal re-arrangement: the function for sending a challenge and reading
2380 a response while authentication was assuming a zero-terminated challenge
2381 string. It's now changed to take a pointer and a length, to allow for
2382 binary data in such strings.
2383
238422. Added the cyrus_sasl authenticator (code supplied by MBM).
2385
238623. Exim was not respecting finduser_retries when seeking the login of the
2387 uid under which it was called; it was always trying 10 times. (The default
2388 setting of finduser_retries is zero.) Also, it was sleeping after the final
2389 failure, which is pointless.
2390
239124. Implemented tls_on_connect_ports.
2392
239325. Implemented acl_smtp_predata.
2394
239526. If the domain in control=submission is set empty, Exim assumes that the
2396 authenticated id is a complete email address when it generates From: or
2397 Sender: header lines.
2398
239927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2400 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2401 chown and chgrp in /bin and hostname in /usr/bin.
2402
240328. Exim was keeping the "process log" file open after each use, just as it
2404 does for the main log. This opens the possibility of it remaining open for
2405 long periods when the USR1 signal hits a daemon. Occasional processlog
2406 errors were reported, that could have been caused by this. Anyway, it seems
2407 much more sensible not to leave this file open at all, so that is what now
2408 happens.
2409
241029. The long-running daemon process does not normally write to the log once it
2411 has entered its main loop, and it closes the log before doing so. This is
2412 so that log files can straightforwardly be renamed and moved. However,
2413 there are a couple of unusual error situations where the daemon does write
2414 log entries, and I had neglected to close the log afterwards.
2415
241630. The text of an SMTP error response that was received during a remote
2417 delivery was being truncated at 512 bytes. This is too short for some of
2418 the long messages that one sometimes sees. I've increased the limit to
2419 1024.
2420
242131. It is now possible to make retry rules that apply only when a message has a
2422 specific sender, in particular, an empty sender.
2423
242432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2425 it possible to be selective about when SMTP synchronization is enforced.
2426
242733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2428
242932. Implemented hosts_connection_nolog.
2430
243133. Added an ACL for QUIT.
2432
243334. Setting "delay_warning=" to disable warnings was not working; it gave a
2434 syntax error.
2435
243635. Added mailbox_size and mailbox_filecount to appendfile.
2437
243836. Added control = no_multiline_responses to ACLs.
2439
244037. There was a bug in the logic of the code that waits for the clock to tick
2441 in the case where the clock went backwards by a substantial amount such
2442 that the microsecond fraction of "now" was more than the microsecond
2443 fraction of "then" (but the whole seconds number was less).
2444
244538. Added support for the libradius Radius client library this is found on
2446 FreeBSD (previously only the radiusclient library was supported).
2447
2448
2449Exim version 4.42
2450-----------------
2451
2452 1. When certain lookups returned multiple values in the form name=value, the
2453 quoting of the values was not always being done properly. Specifically:
2454 (a) If the value started with a double quote, but contained no whitespace,
2455 it was not quoted.
2456 (b) If the value contained whitespace other than a space character (i.e.
2457 tabs or newlines or carriage returns) it was not quoted.
2458 This fix has been applied to the mysql and pgsql lookups by writing a
2459 separate quoting function and calling it from the lookup code. The fix
2460 should probably also be applied to nisplus, ibase and oracle lookups, but
2461 since I cannot test any of those, I have not disturbed their existing code.
2462
2463 2. A hit in the callout cache for a specific address caused a log line with no
2464 reason for rejecting RCPT. Now it says "Previous (cached) callout
2465 verification failure".
2466
2467 3. There was an off-by-one bug in the queryprogram router. An over-long
2468 return line was truncated at 256 instead of 255 characters, thereby
2469 overflowing its buffer with the terminating zero. As well as fixing this, I
2470 have increased the buffer size to 1024 (and made a note to document this).
2471
2472 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2473 when Exim is waiting for an SMTP response from a remote server, Exim
2474 restarts its select() call on the socket, thereby resetting its timeout.
2475 This is not a problem when such interrupts are rare. Somebody set up a cron
2476 job to run exiwhat every 2 minutes, which is less than the normal select()
2477 timeout (5 or 10 minutes). This meant that the select() timeout never
2478 kicked in because it was always reset. I have fixed this by comparing the
2479 time when an interrupt arrives with the time at the start of the first call
2480 to select(). If more time than the timeout has elapsed, the interrupt is
2481 treated as a timeout.
2482
2483 5. Some internal re-factoring in preparation for the addition of Sieve
2484 extensions (by MH). In particular, the "personal" test is moved to a
2485 separate function, and given an option for scanning Cc: and Bcc: (which is
2486 not set for Exim filters).
2487
2488 6. When Exim created an email address using the login of the caller as the
2489 local part (e.g. when creating a From: or Sender: header line), it was not
2490 quoting the local part when it contained special characters such as @.
2491
2492 7. Installed new OpenBSD configuration files.
2493
2494 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2495 try to make them clearer.
2496
2497 9. Callout options, other than the timeout value, were being ignored when
2498 verifying sender addresses in header lines. For example, when using
2499
2500 verify = header_sender/callout=no_cache
2501
2502 the cache was (incorrectly) being used.
2503
250410. Added a missing instance of ${EXE} to the exim_install script; this affects
2505 only the Cygwin environment.
2506
250711. When return_path_on_delivery was set as a log selector, if different remote
2508 addresses in the same message used different return paths and parallel
2509 remote delivery occurred, the wrong values would sometimes be logged.
2510 (Whenever a remote delivery process finished, the return path value from
2511 the most recently started remote delivery process was logged.)
2512
251312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2514 lines when AUTH and/or TLS are in use. This is the "received protocol"
2515 field. Exim used to use "asmtp" for authenticated SMTP, without any
2516 indication (in the protocol name) for TLS use. Now it follows the RFC and
2517 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2518 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2519 names appear in log lines as well as in Received: header lines.
2520
252113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2522 extensions, and comparison tests, and to fix some bugs.
2523
252414. Changes to the "personal" filter test:
2525
2526 (1) The test was buggy in that it was just doing the equivalent of
2527 "contains" tests on header lines. For example, if a user's address was
2528 anne@some.where, the "personal" test would incorrectly be true for
2529
2530 To: susanne@some.where
2531
2532 This test is now done by extracting each address from the header in turn,
2533 and checking the entire address. Other tests that are part of "personal"
2534 are now done using regular expressions (for example, to check local parts
2535 of addresses in From: header lines).
2536
2537 (2) The list of non-personal local parts in From: addresses has been
2538 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2539 taken from the Sieve specification recommendations.
2540
2541 (3) If the message contains any header line starting with "List-" it is
2542 treated as non-personal.
2543
2544 (4) The test for "circular" in the Subject: header line has been removed
2545 because it now seems ill-conceived.
2546
254715. Minor typos in src/EDITME comments corrected.
2548
254916. Installed latest exipick from John Jetmore.
2550
255117. If headers_add on a router specified a text string that was too long for
2552 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2553 of string_sprintf() is now avoided.
2554
255518. $message_body_size was not set (it was always zero) when running the DATA
2556 ACL and the local_scan() function.
2557
255819. For the "mail" command in an Exim filter, no default was being set for
2559 the once_repeat time, causing a random time value to be used if "once" was
2560 specified. (If the value happened to be <= 0, no repeat happened.) The
2561 default is now 0s, meaning "never repeat". The "vacation" command was OK
2562 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2563 (I found it when inspecting the code).
2564
256520. There is now an overall timeout for performing a callout verification. It
2566 defaults to 4 times the callout timeout, which applies to individual SMTP
2567 commands during the callout. The overall timeout applies when there is more
2568 than one host that can be tried. The timeout is checked before trying the
2569 next host. This prevents very long delays if there are a large number of
2570 hosts and all are timing out (e.g. when the network connections are timing
2571 out). The value of the overall timeout can be changed by specifying an
2572 additional sub-option for "callout", called "maxwait". For example:
2573
2574 verify = sender/callout=5s,maxwait=20s
2575
257621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2577 to the end before writing, but this should make it even safer).
2578
257922. Exim was forgetting that it had advertised PIPELINING for the second and
2580 subsequent messages on an SMTP connection. It was also not resetting its
2581 memory on STARTTLS and an internal HELO.
2582
258323. When Exim logs an SMTP synchronization error within a session, it now
2584 records whether PIPELINING has been advertised or not.
2585
258624. Added 3 instances of "(long int)" casts to time_t variables that were being
2587 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2588 rather than long int.
2589
259025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2591
259226. Added the never_mail option to autoreply.
2593
2594
2595Exim version 4.41
2596-----------------
2597
2598 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2599 crash if the getsockname() call failed; this can happen if a connection is
2600 closed very soon after it is established. The problem was simply in the
2601 order in which certain operations were done, causing Exim to try to write
2602 to the SMTP stream before it had set up the file descriptor. The bug has
2603 been fixed by making things happen in the correct order.
2604
2605
2606Exim version 4.40
2607-----------------
2608
2609 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2610 before the connection was closed, thus losing the rejection response.
2611
2612 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2613 some early Solaris releases, but causes trouble in current releases where
2614 socklen_t is defined.
2615
2616 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2617 always exist.
2618
2619 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2620 configured.
2621
2622 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2623 that releasing the top of it at the end releases what was used for sub-
2624 expansions (unless the block got too big). However, discard this block if
2625 the first thing is a variable or header, so that we can use its block when
2626 it is dynamic (useful for very large $message_headers, for example).
2627
2628 6. Lookups now cache *every* query, not just the most recent. A new, separate
2629 store pool is used for this. It can be recovered when all lookup caches are
2630 flushed. Lookups now release memory at the end of their result strings.
2631 This has involved some general refactoring of the lookup sources.
2632
2633 7. Some code has been added to the store_xxx() functions to reduce the amount
2634 of flapping under certain conditions.
2635
2636 8. log_incoming_interface used to affect only the <= reception log lines. Now
2637 it causes the local interface and port to be added to several more SMTP log
2638 lines, for example "SMTP connection from", and rejection lines.
2639
2640 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2641
264210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2643
264411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2645 could be overwritten at the end of the current message (or the start of a
2646 new message if it was set in a HELO ACL). The value is now preserved for
2647 the duration of the SMTP connection.
2648
264912. If a transport had a headers_rewrite setting, and a matching header line
2650 contained an unqualified address, that address was qualified, even if it
2651 did not match any rewriting rules. The underlying bug was that the values
2652 of the flags that permit the existence of unqualified sender and recipient
2653 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2654 non-local messages, and by -bnq for local messages) were not being
2655 preserved with the message after it was received.
2656
265713. When Exim was logging an SMTP synchronization error, it could sometimes log
2658 "next input=" as part of the text comprising the host identity instead of
2659 the correct text. The code was using the same buffer for two different
2660 strings. However, depending on which order the printing function evaluated
2661 its arguments, the bug did not always show up. Under Linux, for example, my
2662 test suite worked just fine.
2663
266414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2665 doesn't work with some older versions of Perl. It has been changed to "my",
2666 which in any case is probably the better facility to use.
2667
266815. A really picky compiler found some instances of statements for creating
2669 error messages that either had too many or two few arguments for the format
2670 string.
2671
267216. The size of the buffer for calls to the DNS resolver has been increased
2673 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2674 for addresses that have a lot of PTR records. This alleviates a problem; it
2675 does not fully solve it.
2676
267717. A dnsdb lookup for PTR records that receives more data than will fit in the
2678 buffer now truncates the list and logs the incident, which is the same
2679 action as happens when Exim is looking up a host name and its aliases.
2680 Previously in this situation something unpredictable would happen;
2681 sometimes it was "internal error: store_reset failed".
2682
268318. If a server dropped the connection unexpectedly when an Exim client was
2684 using GnuTLS and trying to read a response, the client delivery process
2685 crashed while trying to generate an error log message.
2686
268719. If a "warn" verb in an ACL added multiple headers to a message in a single
2688 string, for example:
2689
2690 warn message = H1: something\nH2: something
2691
2692 the text was added as a single header line from Exim's point of view
2693 though it ended up OK in the delivered message. However, searching for the
2694 second and subsequent header lines using $h_h2: did not work. This has been
2695 fixed. Similarly, if a system filter added multiple headers in this way,
2696 the routers could not see them.
2697
269820. Expanded the error message when iplsearch is called with an invalid key to
2699 suggest using net-iplsearch in a host list.
2700
270121. When running tests using -bh, any delays imposed by "delay" modifiers in
2702 ACLs are no longer actually imposed (and a message to that effect is
2703 output).
2704
270522. If a "gecos" field in a passwd entry contained escaped characters, in
2706 particular, if it contained a \" sequence, Exim got it wrong when building
2707 a From: or a Sender: header from that name. A second bug also caused
2708 incorrect handling when an unquoted " was present following a character
2709 that needed quoting.
2710
271123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2712 was not being matched caselessly.
2713
271424. Arranged for all hyphens in the exim.8 source to be escaped with
2715 backslashes.
2716
271725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2718 properly. Recipient callout cache records were still being keyed to include
2719 the sender, even when use_sender was set false. This led to far more
2720 callouts that were necessary. The sender is no longer included in the key
2721 when use_sender is false.
2722
272326. Added "control = submission" modifier to ACLs.
2724
272527. Added the ${base62d: operator to decode base 62 numbers.
2726
272728. dnsdb lookups can now access SRV records.
2728
272929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2730 the configuration file.
2731
273230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2733 (-v) mode. This makes the output for a verbose queue run more intelligible.
2734
273531. Added a use_postmaster feature to recipient callouts.
2736
273732. Added the $body_zerocount variable, containing the number of binary zero
2738 bytes in the message body.
2739
274033. The time of last modification of the "new" subdirectory is now used as the
2741 "mailbox time last read" when there is a quota error for a maildir
2742 delivery.
2743
274434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2745
274635. Added +ignore_unknown as a special item in host lists.
2747
274836. Code for decoding IPv6 addresses in host lists is now included, even if
2749 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2750 address was recognized as an IP address, but was then not correctly decoded
2751 into binary, causing unexpected and incorrect effects when compared with
2752 another IP address.
2753
2754
2755Exim version 4.34
2756-----------------
2757
2758 1. Very minor rewording of debugging text in manualroute to say "list of
2759 hosts" instead of "hostlist".
2760
2761 2. If verify=header_syntax was set, and a header line with an unqualified
2762 address (no domain) and a large number of spaces between the end of the
2763 name and the colon was received, the reception process suffered a buffer
2764 overflow, and (when I tested it) crashed. This was caused by some obsolete
2765 code that should have been removed. The fix is to remove it!
2766
2767 3. When running in the test harness, delay a bit after writing a bounce
2768 message to get a bit more predictability in the log output.
2769
2770 4. Added a call to search_tidyup() just before forking a reception process. In
2771 theory, someone could use a lookup in the expansion of smtp_accept_max_
2772 per_host which, without the tidyup, could leave open a database connection.
2773
2774 5. Added the variables $recipient_data and $sender_data which get set from a
2775 lookup success in an ACL "recipients" or "senders" condition, or a router
2776 "senders" option, similar to $domain_data and $local_part_data.
2777
2778 6. Moved the writing of debug_print from before to after the "senders" test
2779 for routers.
2780
2781 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2782 problems for message scanning, either using a data ACL, or using
2783 local_scan() because the Received: header was not generated till after they
2784 were called (in order to set the time as the time of reception completion).
2785 I have revised the way this works. The header is now generated after the
2786 body is received, but before the ACL or local_scan() are called. After they
2787 are run, the timestamp in the header is updated.
2788
2789
2790Exim version 4.33
2791-----------------
2792
2793 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2794 before starting a queue runner without re-exec. This happened only when
2795 deliver_drop_privilege was set or when the Exim user was set to root. The
2796 effect of the bug was that timeouts during subsequent deliveries caused
2797 crashes instead of being properly handled. The handler is now left at its
2798 default (and expected) setting.
2799
2800 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2801 message, again when deliver_drop_privilege is set or Exim is run as root.
2802 The bug described in (1) was not present in this case, but the tidying up
2803 of the other signals was missing. I have made the two cases consistent.
2804
2805 3. The ignore_target_hosts setting on a manualroute router was being ignored
2806 for hosts that were looked up using the /MX notation.
2807
2808 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2809 in domain lists.
2810
2811 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2812 operated on the sender address. After changing the $sender_address to <>
2813 for the sender address verify, Exim was re-instated it as the original
2814 (before rewriting) address, but remembering that it had rewritten it, so it
2815 wasn't rewriting it again. This bug also had the effect of breaking the
2816 sender address verification caching when the sender address was rewritten.
2817
2818 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2819 This has been changed so that if the ip literal address matches
2820 ignore_target_hosts, the router declines.
2821
2822 7. Added expansion conditions match_domain, match_address, and match_local_
2823 part (NOT match_host).
2824
2825 8. The placeholder for the Received: header didn't have a length field set.
2826
2827 9. Added code to Exim itself and to exim_lock to test for a specific race
2828 condition that could lead to file corruption when using MBX delivery. The
2829 issue is with the lockfile that is created in /tmp. If this file is removed
2830 after a process has opened it but before that process has acquired a lock,
2831 there is the potential for a second process to recreate the file and also
2832 acquire a lock. This could lead to two Exim processes writing to the file
2833 at the same time. The added code performs the same test as UW imapd; it
2834 checks after acquiring the lock that its file descriptor still refers to
2835 the same named file.
2836
283710. The buffer for building added header lines was of fixed size, 8192 bytes.
2838 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2839 when Exim is built.
2840
284111. Added the smtp_active_hostname option. If used, this will typically be made
2842 to depend on the incoming interface address. Because $interface_address is
2843 not set up until the daemon has forked a reception process, error responses
2844 that can happen earlier (such as "too many connections") no longer contain
2845 a host name.
2846
284712. If an expansion in a condition on a "warn" statement fails because a lookup
2848 defers, the "warn" statement is abandoned, and the next ACL statement is
2849 processed. Previously this caused the whole ACL to be aborted.
2850
285113. Added the iplsearch lookup type.
2852
285314. Added ident_timeout as a log selector.
2854
285515. Added tls_certificate_verified as a log selector.
2856
285716. Added a global option tls_require_ciphers (compare the smtp transport
2858 option of the same name). This controls incoming TLS connections.
2859
286017. I finally figured out how to make tls_require_ciphers do a similar thing
2861 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2862 before starting the TLS session.
2863
286418. Tabs are now shown as \t in -bP output.
2865
286619. If the log selector return_path_on_delivery was set, Exim crashed when
2867 bouncing a message because it had too many Received: header lines.
2868
286920. If two routers both had headers_remove settings, and the first one included
2870 a superfluous trailing colon, the final name in the first list and the
2871 first name in the second list were incorrectly joined into one item (with a
2872 colon in the middle).
2873
2874
2875Exim version 4.32
2876-----------------
2877
2878 1. Added -C and -D options to the exinext utility, mainly to make it easier
2879 to include in the automated testing, but these could be helpful when
2880 multiple configurations are in use.
2881
2882 2. The exinext utility was not formatting the output nicely when there was
2883 an alternate port involved in the retry record key, nor when there was a
2884 message id as well (for retries that were specific to a specific message
2885 and a specific host). It was also confused by IPv6 addresses, because of
2886 the additional colons they contain. I have fixed the IPv4 problem, and
2887 patched it up to do a reasonable job for IPv6.
2888
2889 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2890 delivery, the log line now contains "pipelined" if PIPELINING was used.
2891
2892 4. An SMTP transport process used to panic and die if the bind() call to set
2893 an explicit outgoing interface failed. This has been changed; it is now
2894 treated in the same way as a connect() failure.
2895
2896 5. A reference to $sender_host_name in the part of a conditional expansion
2897 that was being skipped was still causing a DNS lookup. This no longer
2898 occurs.
2899
2900 6. The def: expansion condition was not recognizing references to header lines
2901 that used bh_ and bheader_.
2902
2903 7. Added the _cache feature to named lists.
2904
2905 8. The code for checking quota_filecount in the appendfile transport was
2906 allowing one more file than it should have been.
2907
2908 9. For compatibility with Sendmail, the command line option
2909
2910 -prval:sval
2911
2912 is equivalent to
2913
2914 -oMr rval -oMs sval
2915
2916 and sets the incoming protocol and host name (for trusted callers). The
2917 host name and its colon can be omitted when only the protocol is to be set.
2918 Note the Exim already has two private options, -pd and -ps, that refer to
2919 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2920 "s", but I don't think that's a major issue.
2921
292210. A number of refactoring changes to the code, none of which should affect
2923 Exim's behaviour:
2924
2925 (a) The number of logging options was getting close to filling up the
2926 32-bit word that was used as a bit map. I have split them into two classes:
2927 those that are passed in the argument to log_write(), and those that are
2928 only ever tested independently outside of that function. These are now in
2929 separate 32-bit words, so there is plenty of room for expansion again.
2930 There is no change in the user interface or the logging behaviour.
2931
2932 (b) When building, for example, log lines, the code previously used a
2933 macro that called string_cat() twice, in order to add two strings. This is
2934 not really sufficiently general. Furthermore, there was one instance where
2935 it was actually wrong because one of the argument was used twice, and in
2936 one call a function was used. (As it happened, calling the function twice
2937 did not affect the overall behaviour.) The macro has been replaced by a
2938 function that can join an arbitrary number of extra strings onto a growing
2939 string.
2940
2941 (c) The code for expansion conditions now uses a table and a binary chop
2942 instead of a serial search (which was left over from when there were very
2943 few conditions). Also, it now recognizes conditions like "pam" even when
2944 the relevant support is not compiled in: a suitably worded error message is
2945 given if an attempt is made to use such a condition.
2946
294711. Added ${time_interval:xxxxx}.
2948
294912. A bug was causing one of the ddress fields not to be passed back correctly
2950 from remote delivery subprocesses. The field in question was not being
2951 subsequently used, so this caused to problems in practice.
2952
295313. Added new log selectors queue_time and deliver_time.
2954
295514. Might have fixed a bug in maildirsizefile handling that threw up
2956 "unexpected character" debug warnings, and recalculated the data
2957 unnecessarily. In any case, I expanded the warning message to give more
2958 information.
2959
296015. Added the message "Restricted characters in address" to the statements in
2961 the default ACL that block characters like @ and % in local parts.
2962
296316. Change 71 for release 4.31 proved to be much less benign that I imagined.
2964 Three changes have been made:
2965
2966 (a) There was a serious bug; a negative response to MAIL caused the whole
2967 recipient domain to be cached as invalid, thereby blocking all messages
2968 to all local parts at the same domain, from all senders. This bug has
2969 been fixed. The domain is no longer cached after a negative response to
2970 MAIL if the sender used is not empty.
2971
2972 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2973 been restored.
2974
2975 (c) A new callout option, "use_sender" has been added for people who want
2976 the modified behaviour.
2977
2978
2979Exim version 4.31
2980-----------------
2981
2982 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2983 Larry Rosenman.
2984
2985 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2986 indeed breaks things for older releases.
2987
2988 3. Added additional logging to the case where there is a problem reading data
2989 from a filter that is running in a subprocess using a pipe, in order to
2990 try to track down a specific problem.
2991
2992 4. Testing facility fudge: when running in the test harness and attempting
2993 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2994 getting "No route to host". Convert this to a timeout.
2995
2996 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2997 warning.
2998
2999 6. Some OS don't have socklen_t but use size_t instead. This affects the
3000 fifth argument of getsockopt() amongst other things. This is now
3001 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3002 can be set for individual OS. I have set it for SunOS5, OSF1, and
3003 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3004 some earlier ones do not.
3005
3006 7. Change 4.30/15 was not doing the test caselessly.
3007
3008 8. The standard form for an IPv6 address literal was being rejected by address
3009 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3010 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3011 this, as well as the form without the "IPv6" on the front (but only when
3012 address literals are enabled, of course).
3013
3014 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3015
301610. Exim crashed if a message with an empty sender address specified by -f
3017 encountered a router with an errors_to setting. This could be provoked only
3018 by a command such as
3019
3020 exim -f "" ...
3021
3022 where an empty string was supplied; "<>" did not hit this bug.
3023
302411. Installed PCRE release 4.5.
3025
302612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3027 remained set. It is now erased.
3028
302913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3030 times from message ids (which are base 36 rather than the normal 62).
3031
303214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3033 were being counted as actual protocol errors, and logged if the log
3034 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3035 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3036 and DATA following a set of rejected RCPTs do not count as protocol errors.
3037 In other words, Exim assumes they were pipelined, though this may not
3038 actually be the case. Of course, in all cases the client gets an
3039 appropriate error code.
3040
304115. If a lookup fails in an ACL condition, a message about the failure may
3042 be available; it is used if testing the ACL cannot continue, because most
3043 such messages specify what the cause of the deferral is. However, some
3044 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3045 that caused an old message to be retained and used if a later statement
3046 caused a defer, replacing the real cause of the deferral.
3047
304816. If an IP address had so many PTR records that the DNS lookup buffer
3049 was not large enough to hold them, Exim could crash while trying to process
3050 the truncated data. It now detects and logs this case.
3051
305217. Further to 4.21/58, another change has been made: if (and only if) the
3053 first line of a message (the first header line) ends with CRLF, a bare LF
3054 in a subsequent header line has a space inserted after it, so as not to
3055 terminate the header.
3056
305718. Refactoring: tidied an ugly bit of code in appendfile that copied data
3058 unnecessarily, used atoi() instead of strtol(), and didn't check the
3059 termination when getting file sizes from file names by regex.
3060
306119. Completely re-implemented the support for maildirsize files, in the light
3062 of a number of problems with the previous contributed implementation
3063 (4.30/29). In particular:
3064
3065 . If the quota is zero, the maildirsize file is maintained, but no quota is
3066 imposed.
3067
3068 . If the maildir directory does not exist, it is created before any attempt
3069 to write a maildirsize file.
3070
3071 . The quota value in the file is just a cache; if the quota is changed in
3072 the transport, the new value overrides.
3073
3074 . A regular expression is available for excluding directories from the
3075 count.
3076
307720. The autoreply transport checks the characters in options that define the
3078 message's headers; it allows continued headers, but it was checking with
3079 isspace() after an embedded newline instead of explicitly looking for a
3080 space or a tab.
3081
308221. If all the "regular" hosts to which an address was routed had passed their
3083 expiry times, and had not reached their retry times, the address was
3084 bounced, even if fallback hosts were defined. Now Exim should go on to try
3085 the fallback hosts.
3086
308722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3088 equivalent code in the SMTP transport. Some hosts send humungous responses
3089 to HELO/EHLO, more than 1024 it seems.
3090
309123. Refactoring: code in filter.c used (void *) for "any old type" but this
3092 gives compiler warnings in some environments. I've now done it "properly",
3093 using a union.
3094
309524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3096 (because of problems with the built-in one) was declared to return uschar *
3097 instead of char *, causing compiler failure.
3098
309925. Fixed a file descriptor leak when processing alias/forward files.
3100
310126. Fixed a minor format string issue in dbfn.c.
3102
310327. Typo in exim.c: ("dmbnz" for "dbmnz").
3104
310528. If a filter file refered to $h_xxx or $message_headers, and the headers
3106 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3107 become corrupted.
3108
310929. When a sender address is verified, it is cached, to save repeating the test
3110 when there is more than one recipient in a message. However, when the
3111 verification involves a callout, it is possible for different callout
3112 options to be set for different recipients. It is too complicated to keep
3113 track of this in the cache, so now Exim always runs a verification when a
3114 callout is required, relying on the callout cache for the optimization.
3115 The overhead is duplication of the address routing, but this should not be
3116 too great.
3117
311830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3119 to be verified with callout=postmaster, and the main callout worked but the
3120 postmaster check failed, the verification correctly failed. However, if a
3121 subsequent RCPT command asked for sender verification *without* the
3122 postmaster check, incorrect caching caused this verification also to fail,
3123 incorrectly.
3124
312531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3126 it was not caching the DNS options (qualify_single, search_parents) that
3127 were used when the lookup failed. A subsequent lookup with different
3128 options therefore always gave the same answer, though there were cases
3129 where it should not have. (Example: a "domains = !$mx_any" option on a
3130 dnslookup router: the "domains" option is always processed without any
3131 widening, but the router might have qualify_single set.) Now Exim uses the
3132 cached value only when the same options are set.
3133
313432. Added John Jetmore's "exipick" utility to the distribution.
3135
313633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3137 than a timeout (e.g. a certificate is required, and is not provided), an
3138 Exim server now closes the connection immediately. Previously it waited for
3139 the client to close - but if the client is SSL, it seems that they each
3140 wait for each other, leading to a delay before one of them times out.
3141
314234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3143 maintained 0.8.x compatibility because I don't think many are using it, and
3144 it is clearly obsolete.
3145
314635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3147 transport.
3148
314936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3150 client certificate was expired. A simple patch fixes this, though I don't
3151 understand the full logic of why the verify callback is called multiple
3152 times.
3153
315437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3155 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3156 which causes problems with some clients (such as the Certicom SSL Plus
3157 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3158 disables the coutermeasure allowing Eudora to connect."
3159
316038. Exim was not checking that a write() to a log file succeeded. This could
3161 lead to Bad Things if a log got too big, in particular if it hit a file
3162 size limit. Exim now panics and dies if it cannot write to a log file, just
3163 as it does if it cannot open a log file.
3164
316539. Modified OS/Makefile-Linux so that it now contains
3166
3167 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3168
3169 The two -D definitions ensure that Exim is compiled with large file
3170 support, which makes it possible to handle log files that are bigger than
3171 2^31.
3172
317340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3174 instance) a domain was checked against a named list that involved a lookup,
3175 causing $domain_data to be set, then another domain was checked against the
3176 same list, then the first domain was re-checked, the value of $domain_data
3177 after the final check could be wrong. In particular, if the second check
3178 failed, it could be set empty. This bug probably also applied to
3179 $localpart_data.
3180
318141. The strip_trailing_dot option was not being applied to the address given
3182 with the -f command-line option.
3183
318442. The code for reading a message's header from the spool was incrementing
3185 $received_count, but never initializing it. This meant that the value was
3186 incorrect (doubled) while delivering a message in the same process in which
3187 it was received. In the most common configuration of Exim, this never
3188 happens - a fresh exec is done - but it can happen when
3189 deliver_drop_privilege is set.
3190
319143. When Exim logs an SMTP synchronization error - client data sent too soon -
3192 it now includes up to 150 characters of the unexpected data in the log
3193 line.
3194
319544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3196 and building data strings. The size of both of these buffers was 10 000
3197 bytes - far larger than anybody would *ever* want, thought I. Needless to
3198 say, somebody hit the limit. I have increased the maximum line length to
3199 20 000 and the maximum data length of concatenated lines to 100 000. I have
3200 also fixed two bugs, because there was no checking on these buffers. Tsk,
3201 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3202 buffer is too small.
3203
320445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3205 lsearch lookups. Now it does.
3206
320746. When parsing a route_list item in a manualroute router, a fixed-length
3208 buffer was used for the list of hosts. I made this 1024 bytes long,
3209 thinking that nobody would ever have a list of hosts that long. Wrong.
3210 Somebody had a whole pile of complicated expansion conditions, and the
3211 string was silently truncated, leading to an expansion error. It turns out
3212 that it is easier to change to an unlimited length (owing to other changes
3213 that have happened since this code was originally written) than to build
3214 structure for giving a limitation error. The length of the item that
3215 expands into the list of hosts is now unlimited.
3216
321747. The lsearch lookup could not handle data where the length of text line was
3218 more than 4095 characters. Such lines were truncated, leading to shortened
3219 data being returned. It should now handle lines of any length.
3220
322148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3222 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3223 ACL").
3224
322549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3226 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3227 no longer happens in comment lines. A list of replacements is now placed
3228 at the head of all of the source files, except those whose only change is
3229 to replace PERL_COMMAND in the very first #! line.
3230
323150. Replaced the slow insertion sort in queue.c, for sorting the list of
3232 messages on the queue, with a bottom-up merge sort, using code contributed
3233 by Michael Haardt. This should make operations like -bp somewhat faster on
3234 large queues. It won't affect queue runners, except when queue_run_in_order
3235 is set.
3236
323751. Installed eximstats 1.31 in the distribution.
3238
323952. Added support for SRV lookups to the dnslookup router.
3240
324153. If an ACL referred to $message_body or $message_body_end, the value was not
3242 reset for any messages that followed in the same SMTP session.
3243
324454. The store-handling optimization for building very long strings was not
3245 differentiating between the different store pools. I don't think this
3246 actually made any difference in practice, but I've tidied it.
3247
324855. While running the routers to verify a sender address, $sender_address
3249 was still set to the sender address. This is wrong, because when routing to
3250 send a bounce to the sender, it would be empty. Therefore, I have changed
3251 it so that, while verifying a sender address, $sender_address is set to <>.
3252 (There is no change to what happens when verifying a recipient address.)
3253
325456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3255 target A or AAAA records (if not already returned) without resetting the
3256 qualify_single or search_parents options of the DNS resolver. These are
3257 inappropriate in this case because the targets of MX and SRV records must
3258 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3259 target that, when qualified, matched something in the local domain. These
3260 two options are now turned off when doing these lookups.
3261
326257. It seems that at least some releases of Reiserfs (which does not have the
3263 concept of a fixed number of inodes) returns zero and not -1 for the
3264 number of available inodes. This interacted badly with check_spool_inodes,
3265 which assumed that -1 was the "no such thing" setting. What I have done is
3266 to check that the total number of inodes is greater than zero before doing
3267 the test of how many are available.
3268
326958. When a "warn" ACL statement has a log_message modifier, the message is
3270 remembered, and not repeated. This is to avoid a lot of repetition when a
3271 message has many recipients that cause the same warning to be written.
3272 Howewer, Exim was preserving the list of already written lines for an
3273 entire SMTP session, which doesn't seem right. The memory is now reset if a
3274 new message is started.
3275
327659. The "rewrite" debugging flag was not showing the result of rewriting in the
3277 debugging output unless log_rewrite was also set.
3278
327960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3280 of (int)(handle) when we know that handle contains (void *)(-1).
3281
328261. The Exim daemon panic-logs an error return when it closes the incoming
3283 connection. However "connection reset by peer" seems to be common, and
3284 isn't really an error worthy of noting specially, so that particular error
3285 is no long logged.
3286
328762. When Exim is trying to find all the local interfaces, it used to panic and
3288 die if the ioctl to get the interface flags failed. However, it seems that
3289 on at least one OS (Solaris 9) it is possible to have an interface that is
3290 included in the list of interfaces, but for which you get a failure error
3291 for this call. This happens when the interface is not "plumbed" into a
3292 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3293 failure of the "get flags" call assumes that the interface is down.
3294
329563. Added a ${eval10: operator, which assumes all numbers are decimal. This
3296 makes life easier for people who are doing arithmetic on fields extracted
3297 from dates, where you often get leading zeros that should not be
3298 interpreted as octal.
3299
330064. Added qualify_domain to the redirect router, to override the global
3301 setting.
3302
330365. If a pathologically long header line contained very many addresses (the
3304 report of this problem mentioned 10 000) and each of them was rewritten,
3305 Exim could use up a very large amount of memory. (It kept on making new
3306 copies of the header line as it rewrote, and never released the old ones.)
3307 At the expense of a bit more processing, the header rewriting function has
3308 been changed so that it no longer eats memory in this way.
3309
331066. The generation of the Received: header has been moved from the time that a
3311 message starts to be received, to the time that it finishes. The timestamp
3312 in the Received: header should now be very close to that of the <= log
3313 line. There are two side-effects of this change:
3314
3315 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3316 logged header lines no longer include the local Received: line, because
3317 it has not yet been created. The same applies to a copy of the message
3318 that is returned to a non-SMTP sender when a message is rejected.
3319
3320 (b) When a filter file is tested using -bf, no additional Received: header
3321 is added to the test message. After some thought, I decided that this
3322 is a bug fix.
3323
3324 This change does not affect the value of $received_for. It is still set
3325 after address rewriting, but before local_scan() is called.
3326
332767. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3328
332968. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3330 gave an unhelpful panic error message, and a defer error. I have managed to
3331 change this behaviour so that it now rejects any supplied certificate,
3332 which seems right, as the list of acceptable certificates is empty.
3333
333469. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3335 gave an unhelpful defer error. I have not managed to make this reject any
3336 supplied certificates, but the error message it gives is "no certificate
3337 supplied", which is not helpful.
3338
333970. exigrep's output now also includes lines that are not associated with any
3340 message, but which match the given pattern. Implemented by a patch from
3341 Martin Sluka, which also tidied up the Perl a bit.
3342
334371. Recipient callout verification, like sender verification, was using <> in
3344 the MAIL FROM command. This isn't really the right thing, since the actual
3345 sender may affect whether the remote host accepts the recipient or not. I
3346 have changed it to use the actual sender in the callout; this means that
3347 the cache record is now keyed on a recipient/sender pair, not just the
3348 recipient address. There doesn't seem to be a real danger of callout loops,
3349 since a callout by the remote host to check the sender would use <>.
3350 [SEE ABOVE: changed after hitting problems.]
3351
335272. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3353 temporary errors. However, in the case of such a code being given after
3354 the end of a data transmission (i.e. after ".") Exim was failing to write
3355 a retry record for the message. (Yes, there was some broken host that was
3356 actually sending 8xx at this point.)
3357
335873. An unknown lookup type in a host list could cause Exim to panic-die when
3359 the list was checked. (An example that provoked this was putting <; in the
3360 middle of a list instead of at the start.) If this happened during a DATA
3361 ACL check, a -D file could be left lying around. This kind of configuration
3362 error no longer causes Exim to die; instead it causes a defer errror. The
3363 incident is still logged to the main and panic logs.
3364
336574. Buglet left over from Exim 3 conversion. The message "too many messages
3366 in one connection" was written to the rejectlog but not the mainlog, except
3367 when address rewriting (yes!) was being logged.
3368
336975. Added write_rejectlog option.
3370
337176. When a system filter was run not as root (that is, when system_filter_user
3372 was set), the values of the $n variables were not being returned to the
3373 main process; thus, they were not subsequently available in the $sn
3374 variables.
3375
337677. Added +return_path_on_delivery log selector.
3377
337878. A connection timeout was being treated differently from recipients deferred
3379 when testing hosts_max_try with a message that was older than the host's
3380 retry timeout. (The host should not be counted, thus allowing all hosts to
3381 be tried at least once before bouncing.) This may have been the cause of an
3382 occasionally reported bug whereby a message would remain on the queue
3383 longer than the retry timeout, but would be bounced if a delivery was
3384 forced. I say "may" because I never totally pinned down the problem;
3385 setting up timeout/retry tests is difficult. See also the next item.
3386
338779. The ultimate address timeout was not being applied to errors that involved
3388 a combination of host plus message (for example, a timeout on a MAIL
3389 command). When an address resolved to a number of possible hosts, and they
3390 were not all tried for each delivery (e.g. because of hosts_max_try), a
3391 message could remain on the queue longer than the retry timeout.
3392
339380. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3394 Haardt.
3395
339681. Fixed an obscure SMTP outgoing bug which required at least the following
3397 conditions: (a) there was another message waiting for the same server;
3398 (b) the server returned 5xx to all RCPT commands in the first message so
3399 that the message was not completed; (c) the server dropped the connection
3400 or gave a negative response to the RSET that Exim sends to abort the
3401 transaction. The observed case was a dropped connection after DATA that had
3402 been sent in pipelining mode. That is, the server had advertised PIPELINING
3403 but was not implementing it correctly. The effect of the bug was incorrect
3404 behaviour, such as trying another host, and this could lead to a crash.
3405
3406
3407Exim version 4.30
3408-----------------
3409
3410 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3411 and daemon.c were passed as pointers to ints; they should have been
3412 pointers to socklen_t variables (which are typically unsigned ints).
3413
3414 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3415 fixed.
3416
3417 3. Fixed a really odd bug that affected only the testing scheme; patching a
3418 certain fixed string in the binary changed the value of another string that
3419 happened to be identical to the end of the original first string.
3420
3421 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3422 name", it returns that address as the IP address. On some operating
3423 systems (e.g. Solaris), it also passes back the IP address string as the
3424 "host name". However, on others (e.g. Linux), it passes back an empty
3425 string. Exim wasn't checking for this, and was changing the host name to an
3426 empty string, assuming it had been canonicized.
3427
3428 5. Although rare, it is permitted to have more than one PTR record for a given
3429 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3430 all the names associated with an address, because they do in Solaris.
3431 However, it seems that they do not in Linux for data that comes from the
3432 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3433 I found this out when I moved to a new Linux workstation and tried to run
3434 the Exim test suite.
3435
3436 To get round this problem I have changed the code so that it now does its
3437 own call to the DNS to look up PTR records when searching for a host name.
3438 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3439 addresses that are only in /etc/hosts are still found.
3440
3441 This behaviour is, however, controlled by an option called host_lookup_
3442 order, which defaults to "bydns:byaddr". If people want to use the other
3443 order, or indeed, just use one or the other means of lookup, they can
3444 specify it in this variable.
3445
3446 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3447 some operating systems, this comes back from gethostbyaddr() as an empty
3448 string, and this is what Exim used to test for. However, it seems that in
3449 other systems, "." is yielded. Exim now tests for this case too.
3450
3451 7. The values of check_spool_space and check_log_space are now held internally
3452 as a number of kilobytes instead of an absolute number of bytes. If a
3453 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3454 kilobyte. This means that much larger values can be stored.
3455
3456 8. Exim monitor: an attempt to get the action menu when not actually pointing
3457 at a message produces an empty menu entitled "No message selected". This
3458 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3459 no entries in it ("Shell widget menu has zero width and/or height"). So I
3460 have added a single, blank menu entry in this case.
3461
3462 9. Added ${quote_local_part.
3463
346410. MIME decoding is now applied to the contents of Subject: header lines when
3465 they are logged.
3466
346711. Now that a reference to $sender_host_address automatically causes a reverse
3468 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3469 host lookup before query-style lookups in lists that might use this
3470 variable. This has therefore been abolished, and the "net-" prefix is no
3471 longer necessary for query-style lookups.
3472
347312. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3474 have been a typo for LFLAGS, so it has been changed.
3475
347613. The install script calls Exim with "-C /dev/null" in order to find the
3477 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3478 to be output. Howeve, since Exim outputs its version number before the
3479 error, it didn't break the script. It just looked ugly. I fixed this by
3480 always allowing "-C /dev/null" if the caller is root.
3481
348214. Ignore overlarge ACL variable number when reading spool file - insurance
3483 against a later release with more variables having written the file.
3484
348515. The standard form for an IPv6 address literal was being rejected by EHLO.
3486 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3487 this, as well as the form without the "IPv6" on the front.
3488
348916. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3490 OS/Makefile-Darwin file.
3491
349217. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3493 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3494
349518. After change 4.21/52, "%ld" was used to format the contents of the $inode
3496 variable. However, some OS use ints for inodes. I've added cast to long int
3497 to get rid of the compiler warning.
3498
349919. I had forgotten to lock out "/../" in configuration file names when
3500 ALT_CONFIG_PREFIX was set.
3501
350220. Routers used for verification do not need to specify transports. However,
3503 if such a router generated a host list, and callout was configured, Exim
3504 crashed, because it could not find a port number from the (non-existent)
3505 transport. It now assumes port 25 in this circumstance.
3506
350721. Added the -t option to exigrep.
3508
350922. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3510 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3511 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3512 them is set, LOOKUP_LSEARCH is forced.
3513
351423. "exim -bV" now outputs a list of lookups that are included in the binary.
3515
351624. Added sender and host information to the "rejected by local_scan()" log
3517 line; previously there was no indication of these.
3518
351925. Added .include_if_exists.
3520
352126. Change 3.952/11 added an explicit directory sync on top of a file sync for
3522 Linux. It turns out that not all file systems support this. Apparently some
3523 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3524 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3525 not supported on the file descriptor, is now ignored when Exim is trying to
3526 sync a directory. This applies only to Linux.
3527
352827. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3529
353028. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3531 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3532 this.
3533
353429. Added support for maildirsize files from supplied patch (modified a bit).
3535
353630. The use of :fail: followed by an empty string could lead Exim to respond to
3537 sender verification failures with (e.g.):
3538
3539 550 Verification failed for <xxx>
3540 550 Sender verify failed
3541
3542 where the first response line was missing the '-' that indicates it is not
3543 the final line of the response.
3544
354531. The loop for finding the name of the user that called Exim had a hardwired
3546 limit of 10; it now uses the value of finduser_retries, which is used for
3547 all other user lookups.
3548
354932. Added $received_count variable, available in data and not_smtp ACLs, and at
3550 delivery time.
3551
355233. Exim was neglecting to zero errno before one call of strtol() when
3553 expanding a string and expecting an integer value. On some systems this
3554 resulted in spurious "integer overflow" errors. Also, it was casting the
3555 result into an int without checking.
3556
355734. Testing for a connection timeout using "timeout_connect" in the retry rules
3558 did not work. The code looks as if it has *never* worked, though it appears
3559 to have been documented since at least releast 1.62. I have made it work.
3560
356135. The "timeout_DNS" error in retry rules, also documented since at least
3562 1.62, also never worked. As it isn't clear exactly what this means, and
3563 clearly it isn't a major issue, I have abolished the feature by treating it
3564 as "timeout", and writing a warning to the main and panic logs.
3565
356636. The display of retry rules for -brt wasn't always showing the error code
3567 correctly.
3568
356937. Added new error conditions to retry rules: timeout_A, timeout_MX,
3570 timeout_connect_A, timeout_connect_MX.
3571
357238. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3573 to the empty sender.
3574
357539. The daemon was not analysing the content of -oX till after it had closed
3576 stderr and disconnected from the controlling terminal. This meant that any
3577 syntax errors were only noted on the panic log, and the return code from
3578 the command was 0. By re-arranging the code a little, I've made the
3579 decoding happen first, so such errors now appear on stderr, and the return
3580 code is 1. However, the actual setting up of the sockets still happens in
3581 the disconnected process, so errors there are still only recorded on the
3582 panic log.
3583
358440. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3585 connections (as happens on some IP stacks) was logged at start up time as
3586 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3587 it from "IPv6 and IPv4", which means that two separate sockets are being
3588 used.
3589
359041. The debug output for gethostbyname2() or getipnodebyname() failures now
3591 says whether AF_INET or AF_INET6 was passed as an argument.
3592
359342. Exiwhat output was messed up when time zones were included in log
3594 timestamps.
3595
359643. Exiwhat now gives more information about the daemon's listening ports,
3597 and whether -tls-on-connect was used.
3598
359944. The "port" option of the smtp transport is now expanded.
3600
360145. A "message" modifier in a "warn" statement in a non-message ACL was being
3602 silently ignored. Now an error message is written to the main and panic
3603 logs.
3604
360546. There's a new ACL modifier called "logwrite" which writes to a log file
3606 as soon as it is encountered.
3607
360847. Added $local_user_uid and $local_user_gid at routing time.
3609
361048. Exim crashed when trying to verify a sender address that was being