Sort out group syntax problems, particularly with verify=header_sender.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
1eccaa59 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.406 2006/10/10 15:36:50 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
944e9e9c
TF
6Exim version 4.64
7-----------------
8
9TF/01 In the add_headers option to the mail command in an Exim filter,
10 there was a bug that Exim would claim a syntax error in any
11 header after the first one which had an odd number of characters
12 in the field name.
13
2b1c6e3a
PH
14PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
15 callout verification, Exim cached a "reject" for the entire domain. This
16 is correct for most verifications, but it is not correct for a recipient
17 verification with use_sender or use_postmaster set, because in that case
18 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
19 case of MAIL FROM:<> rejection from other early rejections (e.g.
20 rejection of HELO). When verifying a recipient using a non-null MAIL
21 address, the cache is ignored if it shows MAIL FROM:<> rejection.
22 Whatever the result of the callout, the value of the domain cache is
23 left unchanged (for any other kind of callout, getting as far as trying
24 RCPT means that the domain itself is ok).
25
1f872c80
PH
26PH/02 Tidied a number of unused variable and signed/unsigned warnings that
27 gcc 4.1.1 threw up.
28
29PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
30 manifest itself as EPIPE rather than ECONNECT. When tidying away a
31 session, the daemon ignores ECONNECT errors and logs others; it now
32 ignores EPIPE as well.
33
d203e649
PH
34PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
35 (quoted-printable decoding).
36
cc2ed8f7 37PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 38 later the small subsequent patch to fix an introduced bug.
f951fd57 39
ddfcd446
PH
40PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
41
d45b1de8
PH
42PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
43
44PH/08 An error is now given if message_size_limit is specified negative.
45
38a0a95f 46PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 47 to be given (somewhat) arbitrary names.
38a0a95f 48
a2405d83
JJ
49JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
50 in 4.64-PH/09.
51
52JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
53 miscellaneous code fixes
54
6ea85e9a
PH
55PH/10 Added the log_reject_target ACL modifier to specify where to log
56 rejections.
57
26da7e20
PH
58PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
59 hostname. This is wrong, because it relates to the incoming message (and
60 probably the interface on which it is arriving) and not to the outgoing
61 callout (which could be using a different interface). This has been
62 changed to use the value of the helo_data option from the smtp transport
63 instead - this is what is used when a message is actually being sent. If
64 there is no remote transport (possible with a router that sets up host
65 addresses), $smtp_active_hostname is used.
6ea85e9a 66
14aa5a05
PH
67PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
68 tweaks were necessary in order to get it to work:
69 (a) The code assumed that strncpy() returns a negative number on buffer
70 overflow, which isn't the case. Replaced with Exim's string_format()
71 function.
72 (b) There were several signed/unsigned issues. I just did the minimum
73 hacking in of casts. There is scope for a larger refactoring.
74 (c) The code used strcasecmp() which is not a standard C function.
75 Replaced with Exim's strcmpic() function.
76 (d) The code set only $1; it now sets $auth1 as well.
77 (e) A simple test gave the error "authentication client didn't specify
78 service in request". It would seem that Dovecot has changed its
79 interface. Fortunately there's a specification; I followed it and
80 changed what the client sends and it appears to be working now.
81
ff75a1f7
PH
82PH/13 Added $message_headers_raw to provide the headers without RFC 2047
83 decoding.
84
e6f6568e
PH
85PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
86 address A is aliased to B and C, where B exists and C does not. Without
87 -v the output is "A verified" because verification stops after a
88 successful redirection if more than one address is generated. However,
89 with -v the child addresses are also verified. Exim was outputting "A
90 failed to verify" and then showing the successful verification for C,
91 with its parentage. It now outputs "B failed to verify", showing B's
92 parentage before showing the successful verification of C.
93
d6f6e0dc
PH
94PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
95 look up a TXT record in a specific list after matching in a combined
96 list.
97
322050c2
PH
98PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
99 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
100 they consult the DNS. I had assumed they would set it the way they
101 wanted; and indeed my experiments on Linux seem to show that in some
102 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
103 To be on the safe side, however, I have now made the interface to
104 host_find_byname() similar to host_find_bydns(), with an argument
105 containing the DNS resolver options. The host_find_byname() function now
106 sets these options at its start, just as host_find_bydns() does. The smtp
107 transport options dns_qualify_single and dns_search_parents are passed to
108 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
109 of host_find_byname() use the default settings of RES_DEFNAMES
110 (qualify_single) but not RES_DNSRCH (search_parents).
111
08955dd3
PH
112PH/17 Applied (a modified version of) Nico Erfurth's patch to make
113 spool_read_header() do less string testing, by means of a preliminary
114 switch on the second character of optional "-foo" lines. (This is
115 overdue, caused by the large number of possibilities that now exist.
116 Originally there were few.) While I was there, I also converted the
117 str(n)cmp tests so they don't re-test the leading "-" and the first
118 character, in the hope this might squeeze out yet more improvement.
119
1eccaa59
PH
120PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
121 flag allowing group syntax was set by the header_syntax check but not
122 turned off, possible causing trouble later; (2) The flag was not being
123 set at all for the header_verify test, causing "group"-style headers to
124 be rejected. I have now set it in this case, and also caused header_
125 verify to ignore an empty address taken from a group. While doing this, I
126 came across some other cases where the code for allowing group syntax
127 while scanning a header line wasn't quite right (mostly, not resetting
128 the flag correctly in the right place). These bugs could have caused
129 trouble for malformed header lines. I hope it is now all correct.
130
944e9e9c 131
478be7b0
SC
132Exim version 4.63
133-----------------
134
135SC/01 Use a glob alias rather than an array ref in eximstats generated
136 parser. This improves both readability and performance.
137
138SC/02 Collect SpamAssassin and rejection statistics in eximstats.
139 Don't display local sender or destination tables in eximstats unless
140 there is data to show.
141 Added average volumes into the eximstats top table text output.
142
143SC/03 Collect data on the number of addresses (recipients) as well
144 as the number of messages in eximstats.
145
2b965a65
TF
146TF/01 Correct an error in the documentation for the redirect router. Exim
147 does (usually) call initgroups() when daemonizing.
478be7b0 148
45b91596
PH
149TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
150 with consistent privilege compared to when running as a daemon.
478be7b0 151
c59f5781
TF
152TF/03 Note in the spec that $authenticated_id is not set for local
153 submissions from trusted users.
154
90fc3069
TF
155TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
156 Thanks to Dean Brooks <dean@iglou.com> for the patch.
157
6083aca0
TF
158TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
159 by adding some example configuration directives to the default
160 configuration file. A little bit of work is required to uncomment the
161 directives and define how usernames and passwords are checked, but
162 there is now a framework to start from.
163
765b530f
PH
164PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
165 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
166 without this. I don't know how relevant this is to other LDAP libraries.
167
4e167a8c
PH
168PH/02 Add the verb name to the "unknown ACL verb" error.
169
4608d683
PH
170PH/03 Magnus Holmgren's patch for filter_prepend_home.
171
b8dc3e4a
PH
172PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
173
5418e93b
PH
174PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
175 directory not expanded when it should be if an expanded home directory
176 was set for the address (which is overridden by the transport).
177
b4a9bda2
PH
178PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
179 libradius.
180
45b91596
PH
181PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
182 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
183 because it is too late at that time, and has no effect.
184
5547e2c5
PH
185PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
186 security issue with \' (bugzilla #107). I could not use the
187 PQescapeStringConn() function, because it needs a PGconn value as one of
188 its arguments.
189
dbcef0ea
PH
190PH/08 When testing addresses using -bt, indicate those final addresses that
191 are duplicates that would not cause an additional delivery. At least one
192 person was confused, thinking that -bt output corresponded to deliveries.
193 (Suppressing duplicates isn't a good idea as you lose the information
194 about possibly different redirections that led to the duplicates.)
195
25257489
PH
196PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
197 systems where poll() doesn't work, in particular OS X.
198
c816d124
PH
199PH/10 Added more information to debugging output for retry time not reached.
200
a9ccd69a
PH
201PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
202 operations in malware.c.
203
75fa1910
PH
204PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
205 signatures.
206
a7d7aa58
PH
207PH/13 If write_rejectlog was set false when logging was sent to syslog with
208 syslog_duplication set false, log lines that would normally be written
209 both the the main log and to the reject log were not written to syslog at
210 all.
211
42119b09
PH
212PH/14 In the default configuration, change the use of "message" in ACL warn
213 statements to "add_header".
214
41609df5
PH
215PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
216 not followed by a command (e.g. "seen endif").
217
a5bd321b
PH
218PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
219 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
220 latter.
221
e85a7ad5 222PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
223 so that it is now:
224
e85a7ad5
PH
225 ${if or { \
226 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
227 { match{$h_precedence:}{(?i)bulk|list|junk} } \
228 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
229 }{no}{yes}}
230
e85a7ad5
PH
231 The Auto-Submitted: and various List- headers are standardised, whereas I
232 don't think Precedence: ever was.
5dff5817 233
d8fe1c03
PH
234PH/18 Refactored debugging code in route_finduser() to show more information,
235 in particular, the error code if getpwnam() issues one.
236
16282d2b
PH
237PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
238 This is apparently needed in addition to the PH/07 change above to avoid
239 any possible encoding problems.
240
35d40a98
PH
241PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
242 but not after initializing Perl.
243
034d99ab
PH
244PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
245 output them only if debugging. By default they are written stderr,
246 apparently, which is not desirable.
247
6ec97b1b
PH
248PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
249 queries.
250
e22ca4ac
JJ
251JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
252 --not options
253
254JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
255
33d73e3b
PH
256PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
257 authenticated or an ident call has been made. Suppress the default
258 values for $authenticated_id and $authenticated_sender (but permit -oMai
259 and -oMas) when testing with -bh.
260
9ecb03f3
PH
261PH/24 Re-jigged the order of the tests in the default configuration so that the
262 tests for valid domains and recipients precede the DNS black list and CSA
263 tests, on the grounds that those ones are more expensive.
264
084efe8d
PH
265PH/25 Exim was not testing for a space following SMTP commands such as EHLO
266 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
267 This bug exists in every version of Exim that I still have, right back to
268 0.12.
269
366fc9f0
PH
270PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
271 However, an attempt to turn on case-sensitivity in a regex key by
272 including (?-i) didn't work because the subject string was already
273 lowercased, and the effects were non-intuitive. It turns out that a
274 one-line patch can be used to allow (?-i) to work as expected.
275
c59f5781 276
c887c79e
TF
277Exim version 4.62
278-----------------
279
280TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
281 other effects) broke the use of negated acl sub-conditions.
282
1cce3af8
PH
283PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
284 patch).
285
afb3eaaf
PH
286PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
287 "Deny" causes Exim to reject the incoming connection with a 554 error.
288 Unfortunately, if there is a major crisis, such as a disk failure,
289 tcp-wrappers gives "deny", whereas what one would like would be some
290 kind of temporary error. A kludge has been added to help with this.
291 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
292 554 error is used if errno is still zero or contains ENOENT (which occurs
293 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
294 451 error is used.
295
e173618b
PH
296PH/03 Add -lutil to the default FreeBSD LIBS setting.
297
dd16e114
PH
298PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
299 errors. Otherwise a message that provokes a temporary error (when other
300 messages do not) can cause a whole host to time out.
301
f7fd3850
PH
302PH/05 Batch deliveries by appendfile and pipe transports did not work when the
303 addresses were routed directly to files or pipes from a redirect router.
304 File deliveries just didn't batch; pipe deliveries might have suffered
305 odd errors.
306
d87df92c
PH
307PH/06 A failure to get a lock for a hints database would erroneously always say
308 "Failed to get write lock", even when it was really a read lock.
309
7e9f683d
PH
310PH/07 The appendfile transport was creating MBX lock files with a fixed mode
311 of 0600. This has been changed to use the value of the lockfile_mode
312 option (which defaults to 0600).
313
bfad5236
PH
314PH/08 Applied small patch from the Sieve maintainer.
315
01c490df
PH
316PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
317 folder from quota calculations, a direct delivery into this folder messed
318 up the contents of the maildirsize file. This was because the regex was
319 used only to exclude .Trash (or whatever) when the size of the mailbox
320 was calculated. There was no check that a delivery was happening into an
321 excluded directory. This bug has been fixed by ignoring all quota
322 processing for deliveries into excluded directories.
323
d6629cdc
PH
324PH/10 Added the maildirfolder_create_regex option to appendfile.
325
1cce3af8 326
214e2000
PH
327Exim version 4.61
328-----------------
329
330PH/01 The code for finding all the local interface addresses on a FreeBSD
331 system running IPv6 was broken. This may well have applied to all BSD
332 systems, as well as to others that have similar system calls. The broken
333 code found IPv4 interfaces correctly, but gave incorrect values for the
334 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
335 that it would not match correctly against @[] and not recognize the IPv6
336 addresses as local.
337
f9daeae0
PH
338PH/02 The ipliteral router was not recognizing addresses of the form user@
339 [ipv6:....] because it didn't know about the "ipv6:" prefix.
340
7e66e54d
PH
341PH/03 Added disable_ipv6.
342
c8ea1597
PH
343PH/04 Changed $reply_address to use the raw form of the headers instead of the
344 decoded form, because it is most often used to construct To: headers
345 lines in autoreplies, and the decoded form may well be syntactically
346 invalid. However, $reply_address has leading white space removed, and all
347 newlines turned into spaces so that the autoreply transport does not
348 grumble.
349
911f6fde
PH
350PH/05 If group was specified without a user on a router, and no group or user
351 was specified on a transport, the group from the router was ignored.
352
47ca6d6c
PH
353PH/06 Increased the number of ACL variables to 20 of each type, and arranged
354 for visible compile-time settings that can be used to change these
355 numbers, for those that want even more. Backwards compatibility with old
356 spool files has been maintained. However, going back to a previous Exim
357 release will lost any variables that are in spool files.
358
ed0e9820
PH
359PH/07 Two small changes when running in the test harness: increase delay when
360 passing a TCP/IP connection to a new process, in case the original
361 process has to generate a bounce, and remove special handling of
362 127.0.0.2 (sic), which is no longer necessary.
363
eff37e47
PH
364PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
365 be the same on different OS.
366
1921d2ea
PH
367PH/09 Moved a debug statement in filter processing to avoid a race problem when
368 testing.
369
b3f69ca8
JJ
370JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
371 whether --show-vars was specified or not
372
373JJ/02 exipick: Added support for new ACL variable spool format introduced
374 in 4.61-PH/06
375
424a1c63
PH
376PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
377 syntactically invalid From: or Reply-to: line, and a filter used this to
378 generate an autoreply, and therefore failed to obtain an address for the
379 autoreply, Exim could try to deliver to a non-existent relative file
380 name, causing unrelated and misleading errors. What now happens is that
381 it logs this as a hard delivery error, but does not attempt to create a
382 bounce message.
383
7a100415
PH
384PH/11 The exinext utility has a -C option for testing purposes, but although
385 the given file was scanned by exinext itself; it wasn't being passed on
386 when Exim was called.
387
19b9dc85
PH
388PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
389 an end-of-file indication when reading a command response.
390
309bd837
PH
391PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
392 compiled. In many other places in Exim, IPv6 addresses are always
393 recognized, so I have changed this. It also means that IPv4 domain
394 literals of the form [IPV4:n.n.n.n] are now always recognized.
395
59e82a2a
PH
396PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
397 used if the router is not running as root, for example, when verifying at
398 ACL time, or when using -bh. The debugging output from this situation was
399 non-existent - all you got was a failure to exec. I have made two
400 changes:
401
402 (a) Failures to set uid/gid, the current directory, or a process leader
403 in a subprocess such as that created by queryprogram now generate
404 suitable debugging ouput when -d is set.
405
406 (b) The queryprogram router detects when it is not running as root,
407 outputs suitable debugging information if -d is set, and then runs
408 the subprocess without attempting to change uid/gid.
409
9edc04ce
PH
410PH/15 Minor change to Makefile for building test_host (undocumented testing
411 feature).
412
1349e1e5
PH
413PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
414 additional section of a DNS packet that returns MX or SRV records.
415 Instead, it always explicitly searches for A/AAAA records. This avoids
416 major problems that occur when a DNS server includes only records of one
417 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
418 fixed another bug: if SRV records were looked up and the corresponding
419 address records were *not* found in the additional section, the port
420 values from the SRV records were lost.
421
ea49d0e1
PH
422PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
423 using the correct key (the original address) when searching the retry
424 rules in order to find which one to use for generating the retry hint.
425
064a94c9
PH
426PH/18 If quota_warn_message contains a From: header, Exim now refrains from
427 adding the default one. Similarly, if it contains a Reply-To: header, the
428 errors_reply_to option, if set, is not used.
429
727071f8
PH
430PH/19 When calculating a retry time, Exim used to measure the "time since
431 failure" by looking at the "first failed" field in the retry record. Now
432 it does not use this if it is later than than the arrival time of the
433 message. Instead it uses the arrival time. This makes for better
434 behaviour in cases where some deliveries succeed, thus re-setting the
435 "first failed" field. An example is a quota failure for a huge message
436 when small messages continue to be delivered. Without this change, the
437 "time since failure" will always be short, possible causing more frequent
438 delivery attempts for the huge message than are intended.
dd16e114 439 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 440
f78eb7c6
PH
441PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
442 $1, $2, $3) because the numerical variables can be reset during some
443 expansion items (e.g. "match"), thereby losing the authentication data.
444
21c28500
PH
445PH/21 Make -bV show the size of off_t variables so that the test suite can
446 decide whether to run tests for quotas > 2G.
447
448PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
449 mailbox_size, and mailbox_filecount in the appendfile transport. If a
450 filecount value is greater than 2G or if a quota value is greater than 2G
451 on a system where the size of off_t is not greater than 4, a panic error
452 is given.
453
1688f43b
PH
454PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
455 never match. The debug and -bh output now contains an explicit error
456 message indicating a malformed IPv4 address or mask.
457
458PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
459 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
460 PH/23 above applies.
461
9675b384
PH
462PH/25 Do not write to syslog when running in the test harness. The only
463 occasion when this arises is a failure to open the main or panic logs
464 (for which there is an explicit test).
465
6a3f1455
PH
466PH/26 Added the /no_tell option to "control=freeze".
467
dac79d3e
PH
468PH/27 If a host name lookup failed very early in a connection, for example, if
469 the IP address matched host_lookup and the reverse lookup yielded a name
470 that did not have a forward lookup, an error message of the form "no IP
471 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
472 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 473
5977a0b3
PH
474PH/28 An enabling patch from MH: add new function child_open_exim2() which
475 allows the sender and the authenticated sender to be set when
476 submitting a message from within Exim. Since child_open_exim() is
477 documented for local_scan(), the new function should be too.
478
c91535f3
PH
479PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
480 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
481 results in an empty string is now treated as unset.
482
0d46a8c8
PH
483PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
484
278c6e6c
PH
485PH/31 Added sender_verify_fail logging option.
486
2cbb4081
PH
487PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
488 needed by RFC 822 but not by RFC 2822 was commented out. I have now
489 tidied the source and removed it altogether.
490
3eef829e
PH
491PH/33 When a queue run was abandoned because the load average was too high, a
492 log line was always written; now it is written only if the queue_run log
493 selector is set. In addition, the log line for abandonment now contains
494 information about the queue run such as the pid. This is always present
495 in "start" and "stop" lines but was omitted from the "abandon" line.
496
1ab95fa6
PH
497PH/34 Omit spaces between a header name and the colon in the error message that
498 is given when verify = headers_syntax fails (if there are lots of them,
499 the message gets confusing).
500
230205fc
PH
501PH/35 Change the default for dns_check_names_pattern to allow slashes within
502 names, as there are now some PTR records that contain slashes. This check
503 is only to protect against broken name servers that fall over on strange
504 characters, so the fact that it applies to all lookups doesn't matter.
505
75e0e026
PH
506PH/36 Now that the new test suite is complete, we can remove some of the
507 special code in Exim that was needed for the old test suite. For example,
508 sorting DNS records because real resolvers return them in an arbitrary
509 order. The new test suite's fake resolver always returns records in the
510 same order.
511
512PH/37 When running in the test harness, use -odi for submitted messages (e.g.
513 bounces) except when queue_only is set, to avoid logging races between
514 the different processes.
515
145396a6
PH
516PH/38 Panic-die if .include specifies a non-absolute path.
517
3cd34f13
PH
518PH/39 A tweak to the "H" retry rule from its user.
519
11121d3d
JJ
520JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
521 a label. They prevented compilation on older perls.
522
523JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
524 a warning to be raised on newish perls.
525
526JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
527 on queue. Changes to match documented behaviour of showing count of
528 messages matching specified criteria.
529
8def5aaf
PH
530PH/40 Changed the default ident timeout from 30s to 5s.
531
929ba01c
PH
532PH/41 Added support for the use of login_cap features, on those BSD systems
533 that have them, for controlling the resources used by pipe deliveries.
534
2632889e
PH
535PH/42 The content-scanning code uses fopen() to create files in which to put
536 message data. Previously it was not paying any attention to the mode of
537 the files. Exim runs with umask(0) because the rest of the code creates
538 files with open(), and sets the required mode explicitly. Thus, these
539 files were ending up world-writeable. This was not a big issue, because,
540 being within the spool directory, they were not world-accessible. I have
541 created a function called modefopen, which takes an additional mode
542 argument. It sets umask(777), creates the file, chmods it to the required
543 mode, then resets the umask. All the relevant calls to fopen() in the
544 content scanning code have been changed to use this function.
545
944a9c55
PH
546PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
547 to 24 hours. This avoids potential overflow problems when processing G
548 and H retry rules. I suspect nobody ever tinkers with this value.
549
4a23603b
PH
550PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
551
4730f942
PH
552PH/45 When the plaintext authenticator is running as a client, the server's
553 challenges are checked to ensure they are valid base64 strings. By
554 default, the authentication attempt is cancelled if an invalid string is
555 received. Setting client_ignore_invalid_base64 true ignores these errors.
556 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
557 they are received. Thus, the responses can be made to depend on the
558 challenges. If an invalid string is ignored, an empty string is placed in
559 the variable.
560
30dba1e6
PH
561PH/46 Messages that are created by the autoreply transport now contains a
562 References: header, in accordance with RFCs 2822 and 3834.
563
382afc6b
PH
564PH/47 Added authenticated_sender_force to the smtp transport.
565
a86229cf
PH
566PH/48 The ${prvs expansion was broken on systems where time_t was long long.
567
50c99ba6
PH
568PH/49 Installed latest patch from the Sieve maintainer.
569
d35e429d
PH
570PH/50 When an Exim quota was set without a file count quota, and mailbox_size
571 was also set, the appendfile transport was unnecessarily scanning a
572 directory of message files (e.g. for maildir delivery) to find the count
573 of files (along with the size), even though it did not need this
574 information. It now does the scan only if it needs to find either the
575 size of the count of files.
576
f90d018c
PH
577PH/51 Added ${time_eval: to convert Exim time strings into seconds.
578
75def545
PH
579PH/52 Two bugs concerned with error handling when the smtp transport is
580 used in LMTP mode:
581
582 (i) Exim was not creating retry information for temporary errors given
583 for individual recipients after the DATA command when the smtp transport
584 was used in LMTP mode. This meant that they could be retried too
585 frequently, and not timed out correctly.
586
587 (ii) Exim was setting the flag that allows error details to be returned
588 for LMTP errors on RCPT commands, but not for LMTP errors for individual
589 recipients that were returned after the DATA command.
590
591PH/53 This is related to PH/52, but is more general: for any failing address,
592 when detailed error information was permitted to be returned to the
593 sender, but the error was temporary, then after the final timeout, only
594 "retry timeout exceeded" was returned. Now it returns the full error as
595 well as "retry timeout exceeded".
596
c46782ef
PH
597PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
598 do this, and (what is worse) MTAs that accept it.
599
71fafd95
PH
600PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
601 will now be deprecated.
602
2c5db4fd
PH
603PH/56 New os.c-cygwin from the Cygwin maintainer.
604
9cf6b11a
JJ
605JJ/06 exipick: added --unsorted option to allow unsorted output in all output
606 formats (previously only available in exim formats via -bpr, -bpru,
607 and -bpra. Now also available in native and exiqgrep formats)
608
609JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
610 with very large, slow to parse queues
611
612JJ/08 exipick: added ! as generic prefix to negate any criteria format
613
614JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
615
898d150f
PH
616PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
617 responses to authentication challenges, though it was showing the
618 challenges; (ii) I've removed the CR characters from the debug output for
619 SMTP output lines.
620
46218253
PH
621PH/58 Allow for the insertion of a newline as well as a space when a string
622 is turned into more than one encoded-word during RFC 2047 encoding. The
623 Sieve code now uses this.
624
e97957bc
PH
625PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
626 data_4xx, lost_connection, tls_required.
627
81e509d7
PH
628PH/60 When a VRFY deferred or FAILED, the log message rather than the user
629 message was being sent as an SMTP response.
630
3d240ff7
PH
631PH/61 Add -l and -k options to exicyclog.
632
b37c4101
PH
633PH/62 When verifying, if an address was redirected to one new address, so that
634 verification continued, and the new address failed or deferred after
635 having set something in $address_data, the value of $address_data was not
636 passed back to the ACL. This was different to the case when no
637 redirection occurred. The value is now passed back in both cases.
638
79378e0f
PH
639PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
640 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
641 use login_cap.h, so on its own it isn't the distinguishing feature. The
642 new name refers directly to the setclassresources() function.
643
e49c7bb4
PH
644PH/65 Added configuration files for NetBSD3.
645
d114ec46
PH
646PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
647
f3d7df6c
PH
648PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
649 is preferred over IPv4.
650
715ab376
PH
651PH/68 The bounce_return_message and bounce_return_body options were not being
652 honoured for bounces generated during the reception of non-SMTP messages.
653 In particular, this applied to messages rejected by the ACL. This bug has
654 been fixed. However, if bounce_return_message is true and bounce_return_
655 body is false, the headers that are returned for a non-SMTP message
656 include only those that have been read before the error was detected.
657 (In the case of an ACL rejection, they have all been read.)
658
6b31b150
PH
659PH/69 The HTML version of the specification is now built in a directory called
660 spec_html instead of spec.html, because the latter looks like a path with
661 a MIME-type, and this confuses some software.
662
663PH/70 Catch two compiler warnings in sieve.c.
664
d515a917
PH
665PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
666 function verify_get_ident() calls ip_connect() to connect a socket, but
667 if the "connect()" function timed out, ip_connect() used to close the
668 socket. However, verify_get_ident() also closes the socket later, and in
669 between Exim writes to the log, which may get opened at this point. When
670 the socket was closed in ip_connect(), the log could get the same file
671 descriptor number as the socket. This naturally causes chaos. The fix is
672 not to close the socket in ip_connect(); the socket should be closed by
673 the function that creates it. There was only one place in the code where
674 this was missing, in the iplookup router, which I don't think anybody now
675 uses, but I've fixed it anyway.
676
9b8fadde
PH
677PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
678 well as to direct DNS lookups. Otherwise the handling of names in host
679 lists is inconsistent and therefore confusing.
680
214e2000 681
5de37277
PH
682Exim version 4.60
683-----------------
684
cc38ddbf
PH
685PH/01 Two changes to the default runtime configuration:
686
687 (1) Move the checks for relay_from_hosts and authenticated clients from
688 after to before the (commented out) DNS black list checks.
689
690 (2) Add control=submission to the relay_from_hosts and authenticated
691 clients checks, on the grounds that messages accepted by these
692 statements are most likely to be submissions.
5de37277 693
72fdd6ae
PH
694PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
695
696 (1) Generate an error if the third argument for the ${prvs expansion is
697 not a single digit.
698
699 (2) Treat a missing third argument of ${prvscheck as if it were an empty
700 string.
701
702 (3) Reset the variables that are obtained from the first argument of
703 ${prvscheck and used in the second argument before leaving the code,
704 because their memory is reclaimed, so using them afterwards may do
705 silly things.
706
707 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
708 one (it's much easier than Tom thought :-).
709
710 (5) Because of (4), we can now allow for the use of $prvscheck_result
711 inside the third argument.
cb9328de 712
cb741023
PH
713PH/03 For some reason, the default setting of PATH when running a command from
714 a pipe transport was just "/usr/bin". I have changed it to
715 "/bin:/usr/bin".
716
f174f16e
PH
717PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
718 anything to be listed in the output from -bV.
b2f5a032 719
c25242d7
PH
720PH/05 When a filter generated an autoreply, the entire To: header line was
721 quoted in the delivery log line, like this:
722
723 => >A.N.Other <ano@some.domain> <original@ddress> ...
724
725 This has been changed so that it extracts the operative address. There
726 may be more than one such address. If so, they are comma-separated, like
727 this:
728
729 => >ano@some.domain,ona@other.domain <original@ddress> ...
730
82c19f95
PH
731PH/06 When a client host used a correct literal IP address in a HELO or EHLO
732 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
733 not being looked up in the rDNS to get a host name, Exim was showing the
734 IP address twice in Received: lines, even though the IP addresses were
735 identical. For example:
736
737 Received: from [1.2.3.4] (helo=[1.2.3.4])
738
739 However, if the real host name was known, it was omitting the HELO data
740 if it matched the actual IP address. This has been tidied up so that it
741 doesn't show the same IP address twice.
742
d7ffbc12
PH
743PH/07 When both +timestamp and +memory debugging was on, the value given by
744 $tod_xxx expansions could be wrong, because the tod_stamp() function was
745 called by the debug printing, thereby overwriting the timestamp buffer.
746 Debugging no longer uses the tod_stamp() function when +timestamp is set.
747
9f526266
PH
748PH/08 When the original message was included in an autoreply transport, it
749 always said "this is a copy of the message, including all the headers",
750 even if body_only or headers_only was set. It now gives an appropriate
751 message.
752
87fcc8b9
PH
753PH/09 Applied a patch from the Sieve maintainer which:
754
755 o fixes some comments
756 o adds the (disabled) notify extension core
757 o adds some debug output for the result of if/elsif tests
758 o points to the current vacation draft in the documentation
759 and documents the missing references header update
760
761 and most important:
762
763 o fixes a bug in processing the envelope test (when testing
764 multiple envelope elements, the last element determinted the
765 result)
766
456682f5
PH
767PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
768 Electronic Mail") by including:
769
770 Auto-submitted: auto-generated
771
772 in the messages that it generates (bounce messages and others, such as
773 warnings). In the case of bounce messages for non-SMTP mesages, there was
774 also a typo: it was using "Auto_submitted" (underscore instead of
775 hyphen). Since every message generated by Exim is necessarily in response
776 to another message, thes have all been changed to:
777
778 Auto-Submitted: auto-replied
779
780 in accordance with these statements in the RFC:
781
782 The auto-replied keyword:
783
784 - SHOULD be used on messages sent in direct response to another
785 message by an automatic process,
786
787 - MUST NOT be used on manually-generated messages,
788
789 - MAY be used on Delivery Status Notifications (DSNs) and Message
790 Disposition Notifications (MDNs),
791
792 - MUST NOT be used on messages generated by automatic or periodic
793 processes, except for messages which are automatic responses to
794 other messages.
795
3e46c1aa
PH
796PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
797 to the default Received: header definition.
456682f5 798
49826d12
PH
799PH/12 Added log selector acl_warn_skipped (default on).
800
eba0c039
PH
801PH/13 After a successful wildlsearch lookup, discard the values of numeric
802 variables because (a) they are in the wrong storage pool and (b) even if
803 they were copied, it wouldn't work properly because of the caching.
804
a0d6ba8a
PH
805PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
806 checking when decoding. Apparently there are clients that generate
807 overlong encoded strings. Why am I not surprised?
808
f0917727
PH
809PH/15 If the first argument of "${if match_address" was not empty, but did not
810 contain an "@" character, Exim crashed. Now it writes a panic log message
811 and treats the condition as false.
812
096fee00
PH
813PH/16 In autoreply, treat an empty string for "once" the same as unset.
814
024bd3c2
PH
815PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
816 extension "envelope-auth". The code is finished and in agreement with
817 other implementations, but there is no documentation so far and in fact,
818 nobody wrote the draft yet. This extension is currently #undef'ed, thus
819 not changing the active code.
820
821 Print executed "if" and "elsif" statements when debugging is used. This
822 helps a great deal to understand what a filter does.
823
824 Document more things not specified clearly in RFC3028. I had all this
825 sorted out, when out of a sudden new issues came to my mind. Oops."
826
df199fec
PH
827PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
828 (Bugzilla #53).
829
d27f1df3
PH
830PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
831 canonical form (as documented). However, after a host name lookup from
832 the IP address, check_host() was doing a simple string comparison with
833 addresses acquired from the DNS when checking that the found name did
834 have the original IP as one of its addresses. Since any found IPv6
835 addresses are likely to be in abbreviated form, the comparison could
836 fail. Luckily, there already exists a function for doing the comparison
837 by converting both addresses to binary, so now that is used instead of
838 the text comparison.
839
96776534
PH
840PH/20 There was another similar case to PH/19, when a complete host name was
841 given in a host list; looking up its IP address could give an abbreviated
842 form, whereas the current host's name might or might not be abbreviated.
843 The same fix has been applied.
844
5de37277 845
9a799bc0
PH
846Exim version 4.54
847-----------------
848
849PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
850 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
851 It now does.
852
99a4b039
PH
853PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
854 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
855
856PH/03 Typo: missing ".o" in src/pcre/Makefile.
857
4b233853
PH
858PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
859 header line, restrict the check to what is listed in RFCs 2369 and 2929.
860 Also, for "Auto-Submitted", treat anything other than "no" as
861 non-personal, in accordance with RFC 3834. (Previously it treated
862 anything starting "auto-" as non-personal.)
863
8857ccfd
PH
864TF/01 The control=submission/name=... option had a problem with syntax
865 errors if the name included a slash character. The /name= option
866 now slurps the rest of the string, so it can include any characters
867 but it must come last in the list of options (after /sender_retain
868 or /domain=).
869
433a2980
PH
870PH/05 Some modifications to the interface to the fake nameserver for the new
871 testing suite.
872
3e46c1aa 873
9a799bc0 874
e3a311ba
TK
875Exim version 4.53
876-----------------
877
878TK/01 Added the "success_on_redirect" address verification option. See
879 NewStuff for rationale and an example.
880
13b685f9
PH
881PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
882
395ff96d
PH
883PH/02 Patch to exigrep to allow it to work on syslog lines.
884
5b68f6e4
PH
885PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
886 fread() to skip over the body file's header line, because in Cygwin the
887 header line is locked and is inaccessible.
888
1ab52c69
PH
889PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
890 co-exist for some time) to make it clear that it is the Exim ID that is
891 referenced, not the Message-ID: header line.
892
b07e6aa3
PH
893PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
894 string_format() function, because snprintf() does not exist on all
895 operating systems.
896
254e032f
PH
897PH/06 The use of forbid_filter_existstest now also locks out the use of the
898 ${stat: expansion item.
899
3af76a81
PH
900PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
901 protocol synchronization error", to keep the pedants happy.
902
2548ba04
PH
903PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
904 well as for IRIX systems, when gcc is being used. See the host.c source
905 file for comments.
906
b6c6011d
PH
907PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
908
cf39cf57
PH
909PH/10 Named domain lists were not working if used in a queue_smtp_domains
910 setting.
911
f1513293
PH
912PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
913 transport and to the smtp transport in LMTP mode.
914
727549a4
PH
915TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
916
af46795e
PH
917PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
918 run a filter in a subprocess. This could lead to confusion in subsequent
919 lookups in the parent process. There should also be a search_tidyup() at
920 the end of the subprocess.
921
d7b47fd0
PH
922PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
923 only if the host matched helo_try_verify_hosts, which caused the
924 verification to occur when the EHLO/HELO command was issued. The ACL just
925 tested the remembered result. Now, if a previous verification attempt has
926 not happened, "verify = helo" does it there and then.
927
ee744174
JJ
928JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
929
b582ab87
PH
930TK/03 Fix log output including CR from clamd.
931
41a13e0a
PH
932PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
933 exist provoked a memory error which could cause a segfault.
934
f625cc5a
PH
935PH/15 Installed PCRE 6.2
936
937PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
938
21f7af35
PH
939PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
940 of the problem. Specifically, suggested +O2 rather than +O1 for the
941 HP-UX compiler.
942
31480e42
PH
943PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
944
2d280592
PH
945PH/20 If a delivery was routed to a non-standard port by means of an SRV
946 record, the port was not correctly logged when the outgoing_port log
947 selector was set (it logged the transort's default port).
948
7cd1141b
PH
949PH/21 Added support for host-specific ports to manualroute, queryprogram,
950 fallback_hosts, and "hosts" in the smtp transport.
951
952PH/22 If the log selector "outgoing_port" is set, the port is now also given on
953 host errors such as "Connection refused".
954
750af86e
PH
955PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
956 authentication with radiusclient 0.4.9:
957
958 - Error returned from rc_read_config was caught wrongly
959 - Username/password not passed on to radius server due to wrong length.
960
961 The presumption is that some radiusclient API changes for 4.51/PH/17
962 were not taken care of correctly. The code is still untested by me (my
963 Linux distribution still has 0.3.2 of radiusclient), but it was
964 contributed by a Radius user.
965
966PH/24 When doing a callout, the value of $domain wasn't set correctly when
967 expanding the "port" option of the smtp transport.
968
4304270b
TK
969TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
970 while reading a MIME header. Thanks to Tom Hughes for a patch.
971
750af86e
PH
972PH/24 Include config.h inside local_scan.h so that configuration settings are
973 available.
974
64ffc24f
PH
975PH/25 Make $smtp_command_argument available after all SMTP commands. This means
976 that in an ACL for RCPT (for example), you can examine exactly what was
977 received.
978
5dd9625b
PH
979PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
980 commands, but it was not correctly comparing the address with the actual
981 client host address. Thus, it would show the EHLO address in Received:
982 header lines when this was not necessary.
983
5591031b
PH
984PH/27 Added the % operator to ${eval:}.
985
ba18e66a
PH
986PH/28 Exim tries to create and chdir to its spool directory when it starts;
987 it should be ignoring failures (because with -C, for example, it has lost
988 privilege). It wasn't ignoring creation failures other than "already
989 exists".
990
9cec981f
PH
991PH/29 Added "crypteq" to the list of supported features that Exim outputs when
992 -bV or -d is used.
993
aa2b5c79
PH
994PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
995 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
996 too many continuations, the temporary file was not being removed, and the
997 return code was incorrect.
aa2b5c79 998
48a53b7f
PH
999PH/31 Missing "BOOL" in function definition in filtertest.c.
1000
1c59d63b
PH
1001PH/32 Applied Sieve patches from the maintainer.
1002
671012da
TK
1003TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1004
1509d3a8
PH
1005PH/33 Added "verify = not_blind".
1006
1007PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1008 Local/Makefile (with some defaults set). These are used in built scripts
1009 such as exicyclog, but they have never been used in the exim_install
1010 script (though there are many overriding facilities there). I have
1011 arranged that the exim_install script now takes note of these two
1012 settings.
1013
1014PH/35 Installed configuration files for Dragonfly.
1015
2fe1a124
PH
1016PH/36 When a locally submitted message by a trusted user did not contain a
1017 From: header, and the sender address was obtained from -f or from an SMTP
1018 MAIL command, and the trusted user did not use -F to supply a sender
1019 name, $originator_name was incorrectly used when constructing a From:
1020 header. Furthermore, $originator_name was used for submission mode
1021 messages from external hosts without From: headers in a similar way,
1022 which is clearly wrong.
1023
8800895a
PH
1024PH/37 Added control=suppress_local_fixups.
1025
ccfdb010
PH
1026PH/38 When log_selector = +received_sender was set, and the addition of the
1027 sender made the log line's construction buffer exactly full, or one byte
1028 less than full, an overflow happened when the terminating "\n" was
1029 subsequently added.
1030
1130bfb0
PH
1031PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1032 when the result of a list match is failure because a DNS lookup failed.
1033
ebcb507f
PH
1034PH/40 RM_COMMAND is now used in the building process.
1035
c35e155c
PH
1036PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1037 the "build-* directories that it finds.
1038
95d1f782
PH
1039PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1040 address in a domain literal was a prefix of an interface address.
1041
fd6de02e
PH
1042PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1043 when verifying a sender address, unless rewrite_headers is false.
1044
58de37c5
PH
1045PH/44 Wrote a long comment about why errors_to addresses are verified as
1046 recipients, not senders.
1047
261cf466
TF
1048TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1049 the ratelimit ACL was added.
1050
3ee512ff
PH
1051PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1052
e08c430f
PH
1053PH/46 Added extra information about PostgreSQL errors to the error string.
1054
bef5a11f
PH
1055PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1056 avoiding the need to install special zones in a real server. This is
1057 backwards compatible; if it can't find the fake resolver, it drops back.
1058 Thus, both old and new test suites can be run.
1059
7546de58
TF
1060TF/02 Added util/ratelimit.pl
1061
e5d5a95f
TF
1062TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1063 clock is set back in time.
1064
2e88a017
TF
1065TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1066 Candler <B.Candler@pobox.com>.
1067
a5f65aa4
TF
1068TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1069 OK for addresses that are the result of redirections.
1070
e7726cbf
PH
1071PH/48 A number of further additions for the benefit of the new test suite,
1072 including a fake gethostbyname() that interfaces to the fake DNS resolver
1073 (see PH/47 above).
1074
a7fdad5b
TF
1075TF/06 The fix for widen_domains has also been applied to qualify_single and
1076 search_parents which are the other dnslookup options that can cause
1077 header rewrites.
1078
6af56900
PH
1079PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1080 type ("H").
1081
0925ede6
PH
1082PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1083
66afa403
TF
1084TF/07 Exim produced the error message "an SRV record indicated no SMTP
1085 service" if it encountered an MX record with an empty target hostname.
1086 The message is now "an MX or SRV record indicated no SMTP service".
1087
0154e85a
TF
1088TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1089 if the DNS of the sending site is misconfigured. This is quite a
1090 common situation. This change restores the behaviour of treating a
1091 helo verification defer as a failure.
1092
16f12c76
PH
1093PH/51 If self=fail was set on a router, the bounce message did not include the
1094 actual error message.
1095
bbe902f0 1096
e5a9dba6
PH
1097Exim version 4.52
1098-----------------
1099
1100TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1101
22c3b60b
PH
1102PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1103 command itself ended in error, the underlying message about the transport
1104 filter timeout was being overwritten with the pipe command error. Now the
1105 underlying error message should be appended to the second error message.
1106
06a9b4b5
PH
1107TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1108
c1ac6996
PH
1109PH/02 Reduce the amount of output that "make" produces by default. Full output
1110 can still be requested.
1111
9c7a242c
PH
1112PH/03 The warning log line about a condition test deferring for a "warn" verb
1113 was being output only once per connection, rather than after each
1114 occurrence (because it was using the same function as for successful
1115 "warn" verbs). This seems wrong, so I have changed it.
1116
87ba3f5f
PH
1117TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1118 it should not have, which might have caused a crash in the right
1119 circumstances, but probably never did.
1120
1121PH/04 Installed a modified version of Tony Finch's patch to make submission
1122 mode fix the return path as well as the Sender: header line, and to
1123 add a /name= option so that you can make the user's friendly name appear
1124 in the header line.
1125
29aba418
TF
1126TF/03 Added the control = fakedefer ACL modifier.
1127
fe0dab11
TF
1128TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1129 Mark Lowes for thorough testing.
870f6ba8 1130
11d337a4
TK
1131TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1132
1133TK/03 Merged latest SRS patch from Miles Wilton.
1134
415c8f3b
PH
1135PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1136 with the definition in sysexits.h (which is #included earlier).
1137 Fortunately, Exim does not actually use EX_OK. The code used to try to
1138 preserve the sysexits.h value, by assumimg that macro definitions were
1139 scanned for macro replacements. I have been disabused of this notion,
1140 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1141
958541e9
PH
1142PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1143 in the smtp transport. When a block could not be written in a single
1144 write() function, the timeout was being re-applied to each part-write.
1145 This seems wrong - if the receiver was accepting one byte at a time it
1146 would take for ever. The timeout is now adjusted when this happens. It
1147 doesn't have to be particularly precise.
1148
c206415f
TK
1149TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1150 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1151
2a4be8f9
PH
1152PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1153 without a domain if the check to <postmaster@domain> fails.
1154
1cba11c5
SC
1155SC/01 Eximstats: added -xls and the ability to specify output files
1156 (patch written by Frank Heydlauf).
1157
1158SC/02 Eximstats: use FileHandles for outputing results.
1159
1160SC/03 Eximstats: allow any combination of xls, txt, and html output.
1161
1162SC/04 Eximstats: fixed display of large numbers with -nvr option
1163
1164SC/05 Eximstats: fixed merging of reports with empty tables.
1165
1166SC/06 Eximstats: added the -include_original_destination flag
1167
1168SC/07 Eximstats: removed tabs and trailing whitespace.
1169
1005d00e
TK
1170TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1171
1172TK/06 MBOX spool code: Add real "From " MBOX separator line
1173 so the .eml file is really in mbox format (even though
1174 most programs do not really care). Patch from Alex Miller.
1175
1176TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1177 The latter is generated from $received_to and is only set if the
1178 message has one envelope recipient. SA can use these headers,
1179 obviously out-of-the-box. Patch from Alex Miller.
1180
9b4768fa
PH
1181PH/08 The ${def test on a variable was returning false if the variable's
1182 value was "0", contrary to what the specification has always said!
1183 The result should be true unless the variable is empty.
1184
1185PH/09 The syntax error of a character other than { following "${if
1186 def:variable_name" (after optional whitespace) was not being diagnosed.
1187 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1188 accidental colon was present, for example, could give incorrect results.
1189
0d7eb84a
PH
1190PH/10 Tidied the code in a number of places where the st_size field of a stat()
1191 result is used (not including appendfile, where other changes are about
1192 to be made).
1193
1194PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1195 This involved changing a lot of size variables from int to off_t. It
1196 should work with maildirs and everything.
1197
40727bee
TK
1198TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1199 spamd dying while we are connected to it.
1200
554d2369
TF
1201TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1202 <jgh@wizmail.org>
1203
1f922db1
PH
1204PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1205 function for BDB 4.3.
1206
ef213c3b
PH
1207PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1208
8ac170f3
PH
1209PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1210 the sources for PCRE have been re-arranged and more files are now
1211 involved.
1212
b1c749bb
PH
1213PH/15 The code I had for printing potentially long long variables in PH/11
1214 above was not the best (it lost precision). The length of off_t variables
1215 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1216 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1217 to be "long long int" or "long int". This is needed for the internal
1218 formatting function string_vformat().
b1c749bb 1219
4aac9b49
PH
1220PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1221 the configuration file to be ":syslog", then the script "guesses" where
1222 the logs files are, rather than using the compiled in default. In our
1223 case the guess is not the same as the compiled default, so the script
1224 suddenly stopped working when I started to use syslog. The patch checks
1225 to see if log_file_path is "". If so, it attempts to read it from exim
1226 with no configuration file to get the compiled in version, before it
1227 falls back to the previous guessing code."
1228
294520c8
TK
1229TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1230 implementing BATV in an Exim configuration. See NewStuff for the gory
1231 details.
1232
5bd022fe
PH
1233PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1234 Makefile that are specific to HP-UX.
1235
90e9ce59
PH
1236PH/18 If the "use_postmaster" option was set for a recipient callout together
1237 with the "random" option, the postmaster address was used as the MAIL
1238 FROM address for the random test, but not for the subsequent recipient
1239 test. It is now used for both.
1240
5ea81592
PH
1241PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1242 patch removes a few documentation additions to RFC 3028, because the
1243 latest draft now contains them. It adds the new en;ascii-case comparator
1244 and a new error check for 8bit text in MIME parts. Comparator and
1245 require names are now matched exactly. I enabled the subaddress
1246 extension, but it is not well tested yet (read: it works for me)."
1247
c6c2dc1d
PH
1248PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1249 rework some of the code of TK/09 above to avoid the hardwired use of
1250 "%lld" and "long long". Replaced the call to snprintf() with a call to
1251 string_vformat().
1252
fffffe4c
PH
1253PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1254 records point to non-existent hosts", "retry timeout exceeded", and
1255 "retry time not reached for any host after a long failure period".
ca02eafb 1256
9a26b6b2
PH
1257PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1258 experimental DomainKeys support:
1259
1260 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1261 (2) On an error such as an illegally used "control", the wrong name for
1262 the control was given.
1263
1264 These problems did NOT occur unless DomainKeys support was compiled.
1265
4aee0225
PH
1266PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1267
32d668a5
PH
1268PH/24 Added ${if match_ip condition.
1269
8187c3f3
PH
1270PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1271 databases so that it will be absolutely obvious if a crash occurs in the
1272 DB library. This is a regular occurrence (often caused by mis-matched
1273 db.h files).
1274
ff790e47 1275PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1276 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1277 picked up on a user's system that detects such things. There doesn't seem
1278 to be a gcc warning option for this - only an attribute that has to be
1279 put on the function's prototype. It seems that in Fedora Core 4 they have
1280 set this on a number of new functions. No doubt there will be more in due
1281 course.
ff790e47 1282
5417f6d1
PH
1283PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1284 specify a transport. However, if an address that was verified by such a
1285 router was the subject of a callout, Exim crashed because it tried to
1286 read the rcpt_include_affixes from the non-existent transport. Now it
1287 just assumes that the setting of that option is false. This bug was
1288 introduced by 4.51/PH/31.
1289
59cf8544
PH
1290PH/28 Changed -d+all to exclude +memory, because that information is very
1291 rarely of interest, but it makes the output a lot bigger. People tend to
1292 do -d+all out of habit.
1293
e7ad8a65
PH
1294PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1295 code in os-type was giving problems when libc.so lives in lib64, like on
1296 x86_64 Fedora Core.
1297
ade42478
PH
1298PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1299 aren't the modern standard, and it seems that some systems' include files
1300 don't always have them. Exim was already checking for some of the newer
1301 ones like T_AAAA, and defining it itself. I've added checks for all the
1302 record types that Exim uses.
1303
182ad5cf
PH
1304PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1305 not automatically generating a new one, as it is supposed to. This
1306 prevented TLS from working. If the file did exist, but contained invalid
1307 data, a new version was generated, as expected. It was only the case of a
1308 non-existent file that was broken.
1309
b0d9fc80
TK
1310TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1311 with a change in libdomainkeys > 0.64.
1312
1313TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1314 from DNS. If the selector record carries the flag, it now has
1315 precedence over the domain-wide flag.
1316
1317TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1318
47c7a64a
PH
1319PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1320 the use of a port name that isn't defined in /etc/services) occurred, the
1321 message was deferred as in a normal delivery, and thus remained on the
1322 spool, instead of being failed because of the mua_wrapper setting. This
1323 is now fixed, and I tidied up some of the mua_wrapper messages at the
1324 same time.
1325
a388bce4
SC
1326SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1327 the messages in a hash of arrays rather than using individual hashes.
1328 This is a bit cleaner and results in dramatic memory savings, albeit
1329 at a slight CPU cost.
1330
1331SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1332 as requested by Marc Sherman.
1333
1334SC/10 Eximstats: added histograms for user specified patterns as requested
1335 by Marc Sherman.
1336
0793e4ed
SC
1337SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1338
c58b88df
PH
1339PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1340 fopen() in the content-scanning modules that did not already have it.
1341
e7ad8a65 1342
7982096b
PH
1343Exim version 4.51
1344-----------------
1345
1a46a8c5
PH
1346TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1347 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1348
2f079f46 1349TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1350
1351TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1352
1353PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1354 to test Sieve filters that use "vacation".
1355
1356PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1357 that changes the way the GnuTLS parameters are stored in the cache file.
1358 The new format can be generated externally. For backward compatibility,
1359 if the data in the cache doesn't make sense, Exim assumes it has read an
1360 old-format file, and it generates new data and writes a new file. This
1361 means that you can't go back to an older release without removing the
1362 file.
1363
1364PH/03 A redirect router that has both "unseen" and "one_time" set does not
1365 work if there are any delivery delays because "one_time" forces the
1366 parent to be marked "delivered", so its unseen clone is never tried
1367 again. For this reason, Exim now forbids the simultaneous setting of
1368 these two options.
1369
1370PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1371 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1372 entry if you want to know the details. The fix, however, neglected to
1373 consider the case when local delivery batching is involved. The test for
1374 "previously delivered" was not happening when checking to see if an
1375 address could be batched with a previous (undelivered) one; under
1376 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1377 address.
1a46a8c5
PH
1378
1379PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1380 in its include files, and this causes problems building Exim.
1381
1382PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1383 header_syntax) but Exim was just ignoring anything given after a slash.
1384 In particular, this caused confusion with an attempt to use "verify =
1385 reverse_host_lookup/defer_ok". An error is now given when options are
1386 supplied for verify items that do not have them. (Maybe reverse_host_
1387 lookup should have a defer_ok option, but that's a different point.)
1388
1389PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1390 defined by RFC 821) to 2048, because there were problems with some AUTH
1391 commands, and RFC 1869 says the size should be increased for extended
1392 SMTP commands that take arguments.
1393
1394PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1395 Finch).
1396
1397PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1398 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1399
49c2d5ea
PH
1400PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1401 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1402 whatever). Otherwise the password may appear in the log. Following change
1403 PH/42 below, there is no longer a chance of it appearing in a bounce
1404 message.
49c2d5ea 1405
bf759a8b
PH
1406PH/11 Installed exipick version 20050225.0 from John Jetmore.
1407
83364d30
PH
1408PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1409 of its addresses was ever tried. (Bugzilla bug #2.)
1410
7999bbd7
PH
1411PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1412 the result incorrectly in the debug output. (It correctly added a newline
1413 to what was transported.)
1414
7dbf77c9
PH
1415TF/01 Added $received_time.
1416
74e0617f
PH
1417PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1418 commented out examples of how to interface to a virus scanner and to
1419 SpamAssassin. Also added commented examples of av_scanner and
1420 spamd_address settings.
1421
2f079f46
PH
1422PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1423 and controls are allowed in which ACLs. There were a couple of minor
1424 errors. Some of the entries in the conditions table (which is a table of
1425 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1426 negation of where the condition IS allowed.
1427
8c841523
PH
1428PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1429
7766a4f0
PH
1430PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1431 header file does not have a version number, so I've had to invent a new
1432 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1433 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1434 radiusclient), but it was contributed by a Radius user.
1435
8b417f2c
PH
1436PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1437 files or directories, for OpenSSL.
1438
901f42cb
PH
1439PH/19 When an Exim process that is running as root has to create an Exim log
1440 file, it does so in a subprocess that runs as exim:exim so as to get the
1441 ownership right at creation (otherwise, other Exim processes might see
1442 the file with the wrong ownership). There was no test for failure of this
1443 fork() call, which would lead to the process getting stuck as it waited
1444 for a non-existent subprocess. Forks do occasionally fail when resources
1445 run out. I reviewed all the other calls to fork(); they all seem to check
1446 for failure.
1447
f9b9210e
PH
1448PH/20 When checking for unexpected SMTP input at connect time (before writing
1449 the banner), Exim was not dealing correctly with a non-positive return
1450 from the read() function. If the client had disconnected by this time,
1451 the result was a log entry for a synchronization error with an empty
1452 string after "input=" when read() returned zero. If read() returned -1
1453 (an event I could not check), uninitialized data bytes were printed.
1454 There were reports of junk text (parts of files, etc) appearing after
1455 "input=".
1456
54cdb463
PH
1457PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1458
cf00dad6
PH
1459PH/22 Added support for macro redefinition, and (re)definition in between
1460 driver and ACL definitions.
1461
acb1b346
PH
1462PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1463 forgetting to use the resulting value; it was using the unexpanded value.
1464
c5ddb310
PH
1465PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1466 hadn't been configured. The fix is from Juergen Kreileder, who
1467 understands it better than I do:
1468
1469 "Here's what I see happening with three configured cyrus_sasl
1470 authenticators configured (plain, login, cram-md5):
1471
1472 On startup auth_cyrus_sasl_init() gets called for each of these.
1473 This means three calls to sasl_listmech() without a specified mech_list.
1474 => SASL tests which mechs of all available mechs actually work
1475 => three warnings about OTP not working
1476 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1477
1478 With the patch, sasl_listmech() also gets called three times. But now
1479 SASL's mech_list option is set to the server_mech specified in the the
1480 authenticator. Or in other words, the answer from sasl_listmech()
1481 gets limited to just the mech you're testing for (which is different
1482 for each call.)
1483 => the return list contains just 'plain' or 'login', 'cram-md5' or
1484 nothing depending on the value of ob->server_mech.
1485
1486 I've just tested the patch: Authentication still works fine,
1487 unavailable mechs specified in the exim configuration are still
1488 caught, and the auth.log warnings about OTP are gone."
1489
31619da6
PH
1490PH/25 When debugging is enabled, the contents of the command line are added
1491 to the debugging output, even when log_selector=+arguments is not
1492 specified.
1493
bebaf0fc
PH
1494PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1495 answer is "GNU", and only if the return is "GNU/something" is the answer
1496 "Linux".
1497
475fe28a
PH
1498PH/27 $acl_verify_message is now set immediately after the failure of a
1499 verification in an ACL, and so is available in subsequent modifiers. In
1500 particular, the message can be preserved by coding like this:
1501
1502 warn !verify = sender
1503 set acl_m0 = $acl_verify_message
1504
1505 Previously, $acl_verify_message was set only while expanding "message"
1506 and "log_message" when a very denied access.
1507
7e8bec7a
PH
1508PH/28 Modified OS/os.c-Linux with
1509
1510 -#ifndef OS_LOAD_AVERAGE
1511 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1512
1513 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1514 nomenclature these days.)
1515
e4a89c47
PH
1516PH/29 Installed patch from the Sieve maintainer that adds the options
1517 sieve_useraddress and sieve_subaddress to the redirect router.
1518
5ca2a9a1
PH
1519PH/30 In these circumstances:
1520 . Two addresses routed to the same list of hosts;
1521 . First host does not offer TLS;
1522 . First host accepts first address;
1523 . First host gives temporary error to second address;
1524 . Second host offers TLS and a TLS session is established;
1525 . Second host accepts second address.
1526 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1527 and peerdn, if requested) that were in fact used only for the second
1528 address.
7e8bec7a 1529
c688b954
PH
1530PH/31 When doing a callout as part of verifying an address, Exim was not paying
1531 attention to any local part prefix or suffix that was matched by the
1532 router that accepted the address. It now behaves in the same way as it
1533 does for delivery: the affixes are removed from the local part unless
1534 rcpt_include_affixes is set on the transport.
1535
fed77020
PH
1536PH/32 Add the sender address, as F=<...>, to the log line when logging a
1537 timeout during the DATA phase of an incoming message.
1538
7fe1560f
PH
1539PH/33 Sieve envelope tests were broken for match types other than :is. I have
1540 applied a patch sanctioned by the Sieve maintainer.
c688b954 1541
ebb6e6d5
PH
1542PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1543 the uid or gid is negative. A case of a negative gid caused this to be
1544 noticed. The fix allows for either to be negative.
1545
9c4e8f60
PH
1546PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1547 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1548 overlooked.
1549
1550PH/36 The change PH/12 above was broken. Fixed it.
1551
d7174846
PH
1552PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1553 the grounds that routing the same address twice would always produce the
1554 same answer. This might have been true once, but it is certainly no
1555 longer true now. Routing a child address may depend on the previous
1556 routing that produced that child. Some complicated redirection strategies
1557 went wrong when messages had multiple recipients, and made Exim's
1558 behaviour dependent on the order in which the addresses were given.
1559
1560 I have moved the duplicate checking until after the routing is complete.
1561 Exim scans the addresses that are assigned to local and remote
1562 transports, and removes any duplicates. This means that more work will be
1563 done, as duplicates will always all be routed, but duplicates are
1564 presumably rare, so I don't expect this is of any significance.
1565
1566 For deliveries to pipes, files, and autoreplies, the duplicate checking
1567 still happens during the routing process, since they are not going to be
1568 routed further.
1569
cfe75fc3
PH
1570PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1571 It corrects a timeout issue with spamd. This is Ian's comment: "The
1572 background is that sometimes spamd either never reads data from a
1573 connection it has accepted, or it never writes response data. The exiscan
1574 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1575 blindly assumes that writes won't block so it may never time out."
1576
be22d70e
PH
1577PH/39 Allow G after quota size as well as K and M.
1578
0612b098
PH
1579PH/40 The value set for $authenticated_id in an authenticator may not contain
1580 binary zeroes or newlines because the value is written to log lines and
1581 to spool files. There was no check on this. Now the value is run through
1582 the string_printing() function so that such characters are converted to
1583 printable escape sequences.
1584
2e0c1448
PH
1585PH/41 $message_linecount is a new variable that contains the total number of
1586 lines in the message. Compare $body_linecount, which is the count for the
1587 body only.
1588
447d236c
PH
1589PH/42 Exim no longer gives details of delivery errors for specific addresses in
1590 bounce and delay warning messages, except in certain special cases, which
1591 are as follows:
1592
1593 (a) An SMTP error message from a remote host;
1594 (b) A message specified in a :fail: redirection;
1595 (c) A message specified in a "fail" command in a system filter;
1596 (d) A message specified in a FAIL return from the queryprogram router;
1597 (e) A message specified by the cannot_route_message router option.
1598
1599 In these cases only, Exim does include the error details in bounce and
1600 warning messages. There are also a few cases where bland messages such
1601 as "unrouteable address" or "local delivery error" are given.
1602
d20976dc
PH
1603PH/43 $value is now also set for the "else" part of a ${run expansion.
1604
f656d135
PH
1605PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1606 being worked on, but at least Exim now implements the latest version to
1607 play with."
1608
2e2a30b4
PH
1609PH/45 In a pipe transport, although a timeout while waiting for the pipe
1610 process to complete was treated as a delivery failure, a timeout while
1611 writing the message to the pipe was logged, but erroneously treated as a
1612 successful delivery. Such timeouts include transport filter timeouts. For
1613 consistency with the overall process timeout, these timeouts are now
1614 treated as errors, giving rise to delivery failures by default. However,
1615 there is now a new Boolean option for the pipe transport called
1616 timeout_defer, which, if set TRUE, converts the failures into defers for
1617 both kinds of timeout. A transport filter timeout is now identified in
1618 the log output.
1619
9176e9f0
PH
1620PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1621 systems where "make" and "gmake" are different, calling "gmake" at top
1622 level broke things. I've arranged for the value of $(MAKE) to be passed
1623 from the Makefile to this script so that it can call the same version of
1624 "make".
1625
7982096b 1626
bbe902f0
PH
1627A note about Exim versions 4.44 and 4.50
1628----------------------------------------
1629
1630Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1631changes of various kinds. As a consequence, a big documentation update was
1632needed. This delayed the release for rather longer than seemed good, especially
1633in the light of a couple of (minor) security issues. Therefore, the changes
1634that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1635release. So 4.44 and 4.50 are in effect two different branches that both start
1636from 4.43.
1637
1638I have left the 4.50 change log unchanged; it contains all the changes since
16394.43. The change log for 4.44 is below; many of its items are identical to
1640those for 4.50. This seems to be the most sensible way to preserve the
1641historical information.
1642
1643
f7b63901 1644Exim version 4.50
495ae4b0
PH
1645-----------------
1646
5fe762f6
PH
1647 1. Minor wording change to the doc/README.SIEVE file.
1648
139059f6 1649 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1650 computation of the current number of files was incorrect.
495ae4b0 1651
7086e875
PH
1652 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1653 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1654 place.
1655
35af9f61
PH
1656 4. Give more explanation in the error message when the command for a transport
1657 filter fails to execute.
1658
b668c215
PH
1659 5. There are several places where Exim runs a non-Exim command in a
1660 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1661 was being done only for the command run by the queryprogram router. It is
1662 now done for all such subprocesses. The other cases are: ${run, transport
1663 filters, and the commands run by the lmtp and pipe transports.
1664
a494b1e1
PH
1665 6. Added CONFIGURE_GROUP build-time option.
1666
1667 7. Some older OS have a limit of 256 on the maximum number of file
1668 descriptors. Exim was using setrlimit() to set 1000 as a large value
1669 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1670 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1671
c5fcb476
PH
1672 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1673 was an oversight, and furthermore, ever since the addition of extra
1674 controls (e.g. 4.43/32), the checks on when to allow different forms of
1675 "control" were broken. There should now be diagnostics for all cases when a
1676 control that does not make sense is encountered.
1677
69358f02
PH
1678 9. Added the /retain_sender option to "control=submission".
1679
5be20824
PH
168010. $recipients is now available in the predata ACL (oversight).
1681
eb2c0248
PH
168211. Tidy the search cache before the fork to do a delivery from a message
1683 received from the command line. Otherwise the child will trigger a lookup
1684 failure and thereby defer the delivery if it tries to use (for example) a
1685 cached ldap connection that the parent has called unbind on.
1686
2a3eea10
PH
168712. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1688 of $address_data from the recipient verification was clobbered by the
1689 sender verification.
1690
169113. The value of address_data from a sender verification is now available in
1692 $sender_address_data in subsequent conditions in the ACL statement.
1693
23c7ff99
PH
169414. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1695
4deaf07d
PH
169615. Added a new option "connect=<time>" to callout options, to set a different
1697 connection timeout.
1698
926e1192
PH
169916. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1700 was its contents. (It was OK if the option was not defined at all.)
1701
650edc6f
PH
170217. A "Completed" log line is now written for messages that are removed from
1703 the spool by the -Mrm option.
1704
2c7db3f5
PH
170518. New variables $sender_verify_failure and $recipient_verify_failure contain
1706 information about exactly what failed.
1707
3d235903
PH
170819. Added -dd to debug only the daemon process.
1709
7c7ad977
PH
171020. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1711 handles timeouts, both on the server side and network timeouts. Renamed the
1712 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1713
981756db
PH
171421. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1715 It is now set to "smtps".
1716
d4eb88df
PH
171722. $host_address is now set to the target address during the checking of
1718 ignore_target_hosts.
1719
172023. When checking ignore_target_hosts for an ipliteral router, no host name was
1721 being passed; this would have caused $sender_host_name to have been used if
1722 matching the list had actually called for a host name (not very likely,
1723 since this list is usually IP addresses). A host name is now passed as
1724 "[x.x.x.x]".
1725
7d468ab8
PH
172624. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1727 code that specifies a non-restarting handler (typically sigaction() in
1728 modern systems) in an attempt to fix a rare and obscure crash bug.
1729
173025. Narrowed the window for a race in the daemon that could cause it to ignore
1731 SIGCHLD signals. This is not a major problem, because they are used only to
1732 wake it up if nothing else does.
1733
62c0818f
PH
173426. A malformed maildirsize file could cause Exim to calculate negative values
1735 for the mailbox size or file count. Odd effects could occur as a result.
1736 The maildirsize information is now recalculated if the size or filecount
1737 end up negative.
1738
26034054
PH
173927. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1740 support for a long time. Removed HAVE_SYS_VFS_H.
1741
af66f652
PH
174228. Installed the latest version of exipick from John Jetmore.
1743
90af77f4
PH
174429. In an address list, if the pattern was not a regular expression, an empty
1745 subject address (from a bounce message) matched only if the pattern was an
1746 empty string. Non-empty patterns were not even tested. This was the wrong
1747 because it is perfectly reasonable to use an empty address as part of a
1748 database query. An empty address is now tested by patterns that are
1749 lookups. However, all the other forms of pattern expect the subject to
1750 contain a local part and a domain, and therefore, for them, an empty
1751 address still always fails if the pattern is not itself empty.
1752
d8ef3577
PH
175330. Exim went into a mad DNS loop when attempting to do a callout where the
1754 host was specified on an smtp transport, and looking it up yielded more
1755 than one IP address.
1756
5cb8cbc6
PH
175731. Re-factored the code for checking spool and log partition space into a
1758 function that finds that data and another that does the check. The former
1759 is then used to implement four new variables: $spool_space, $log_space,
1760 $spool_inodes, and $log_inodes.
1761
14702f5b
PH
176232. The RFC2047 encoding function was originally intended for short strings
1763 such as real names; it was not keeping to the 75-character limit for
1764 encoded words that the RFC imposes. It now respects the limit, and
1765 generates multiple encoded words if necessary. To be on the safe side, I
1766 have increased the buffer size for the ${rfc2047: expansion operator from
1767 1024 to 2048 bytes.
1768
063b1e99
PH
176933. It is now permitted to omit both strings after an "if" condition; if the
1770 condition is true, the result is "true". As before, when the second string
1771 is omitted, a false condition yields an empty string. This makes it less
1772 cumbersome to write custom ACL and router conditions.
1773
652e1b65
PH
177434. Failure to deliver a bounce message always caused it to be frozen, even if
1775 there was an errors_to setting on the router. The errors_to setting is now
1776 respected.
1777
6f0c9a4f
PH
177835. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1779 canonical form (fully expanded) before being placed in
1780 $sender_host_address.
1781
33397d19
PH
178236. The table in the code that translates DNS record types into text (T_A to
1783 "A" for instance) was missing entries for NS and CNAME. It is just possible
1784 that this could have caused confusion if both these types were looked up
1785 for the same domain, because the text type is used as part of Exim's
1786 per-process caching. But the chance of anyone hitting this buglet seems
1787 very small.
1788
7bb56e1f
PH
178937. The dnsdb lookup has been extended in a number of ways.
1790
1791 (1) There is a new type, "zns", which walks up the domain tree until it
1792 finds some nameserver records. It should be used with care.
1793
ea3bc19b
PH
1794 (2) There is a new type, "mxh", which is like "mx" except that it returns
1795 just the host names, not the priorities.
1796
1797 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1798 looked up. The behaviour when one of the lookups defers can be
1799 controlled by a keyword.
7bb56e1f 1800
ea3bc19b 1801 (4) It is now possible to specify the separator character for use when
7bb56e1f 1802 multiple records are returned.
33397d19 1803
0bcb2a0e
PH
180438. The dnslists ACL condition has been extended: it is now possible to supply
1805 a list of IP addresses and/or domains to be looked up in a particular DNS
1806 domain.
1807
2ac0e484
PH
180839. Added log_selector=+queue_time_overall.
1809
4e1fde53
PH
181040. When running the queue in the test harness, wait just a tad after forking a
1811 delivery process, to get repeatability of debugging output.
1812
de365ded
PH
181341. Include certificate and key file names in error message when GnuTLS fails
1814 to set them up, because the GnuTLS error message doesn't include the name
1815 of the failing file when there is a problem reading it.
1816
f05da2e8
PH
181742. Allow both -bf and -bF in the same test run.
1818
d6453af2
PH
181943. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1820
f7b63901
PH
182144. The "Exiscan patch" is now merged into the mainline Exim source.
1822
182345. Sometimes the final signoff response after QUIT could fail to get
1824 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1825 < 0 before doing a fflush(). This bug looks as though it goes back to the
1826 introduction of TLS in release 3.20, but "sometimes" must have been rare
1827 because the tests only now provoked it.
1828
a444213a
PH
182946. Reset the locale to "C" after calling embedded Perl, in case it was changed
1830 (this can affect the format of dates).
1831
0ec020ea
PH
183247. exim_tidydb, when checking for the continued existence of a message for
1833 which it has found a message-specific retry record, was not finding
1834 messages that were in split spool directories. Consequently, it was
1835 deleting retry records that should have stayed in existence.
1836
b1206957
PH
183748. Steve fixed some bugs in eximstats.
1838
183949. The SPA authentication driver was not abandoning authentication and moving
1840 on to the next authenticator when an expansion was forced to fail,
1841 contradicting the general specification for all authenticators. Instead it
1842 was generating a temporary error. It now behaves as specified.
1843
26dd5a95
PH
184450. The default ordering of permitted cipher suites for GnuTLS was pessimal
1845 (the order specifies the preference for clients). The order is now AES256,
1846 AES128, 3DES, ARCFOUR128.
1847
343b2385
PH
184851. Small patch to Sieve code - explicitly set From: when generating an
1849 autoreply.
1850
1c5466b9
PH
185152. Exim crashed if a remote delivery caused a very long error message to be
1852 recorded - for instance if somebody sent an entire SpamAssassin report back
1853 as a large number of 550 error lines. This bug was coincidentally fixed by
1854 increasing the size of one of Exim's internal buffers (big_buffer) that
1855 happened as part of the Exiscan merge. However, to be on the safe side, I
1856 have made the code more robust (and fixed the comments that describe what
1857 is going on).
1858
55ee9ee3
PH
185953. Now that there can be additional text after "Completed" in log lines (if
1860 the queue_time_overall log selector is set), a one-byte patch to exigrep
1861 was needed to allow it to recognize "Completed" as not the last thing in
1862 the line.
1863
d38f8232
PH
186454. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1865 patch that reportedly fixes this has been added. I am not expert enough to
1866 create a test for it. This is what the patch creator wrote:
1867
1868 "I found a little strange behaviour of ldap code when working with
1869 Windows 2003 AD Domain, where users was placed in more than one
1870 Organization Units. When I tried to give exim partial DN, the exit code
1871 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1872 But simultaneously result of request was absolutely normal ldap result,
1873 so I produce this patch..."
1874
3295e65b
PH
1875 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1876 REFERENCE, so I have modified the code to exclude the patch when that macro
1877 is not defined.
1878
7102e136
PH
187955. Some experimental protocols are using DNS PTR records for new purposes. The
1880 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1881 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1882 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1883 CAN-2005-0021
7102e136 1884
3ca0ba97
PH
188556. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1886
c2bcbe20
PH
188757. Double the size of the debug message buffer (to 2048) so that more of very
1888 long debug lines gets shown.
1889
18ce445d
PH
189058. The exicyclog utility now does better if the number of log files to keep
1891 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1892
1f5b4c3d
PH
189359. Two changes related to the smtp_active_hostname option:
1894
1895 (1) $smtp_active_hostname is now available as a variable.
1896 (2) The default for smtp_banner uses $smtp_active_hostname instead
1897 of $primary_hostname.
1898
b975ba52
PH
189960. The host_aton() function is supposed to be passed a string that is known
1900 to be a valid IP address. However, in the case of IPv6 addresses, it was
1901 not checking this. This is a hostage to fortune. Exim now panics and dies
1902 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1903 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1904 components; fortuitously, this particular loophole had already been fixed
1905 by change 4.50/55 above.
1906
1907 If there are any other similar loopholes, the new check in host_aton()
1908 itself should stop them being exploited. The report I received stated that
1909 data on the command line could provoke the exploit when Exim was running as
1910 exim, but did not say which command line option was involved. All I could
1911 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1912 running as the user.
ea3a6f44 1913 CAN-2005-0021
85b87bc2
PH
1914
191561. There was a buffer overflow vulnerability in the SPA authentication code
1916 (which came originally from the Samba project). I have added a test to the
1917 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1918 CAN-2005-0022
b975ba52 1919
17ffcae7
PH
192062. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1921 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1922
d95f9fdb
PH
192363. The daemon start-up calls getloadavg() while still root for those OS that
1924 need the first call to be done as root, but it missed one case: when
1925 deliver_queue_load_max is set with deliver_drop_privilege. This is
1926 necessary for the benefit of the queue runner, because there is no re-exec
1927 when deliver_drop_privilege is set.
1928
86b8287f
PH
192964. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1930 This has been fixed.
1931
60dc5e56
PH
193265. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1933 was in use, was not putting the data itself into the right store pool;
1934 consequently, it could be overwritten for a subsequent message in the same
1935 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1936 the caching.)
1937
533244af
PH
193866. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1939
a5a28604
PH
194067. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1941 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1942 the function were treating the return as a boolean value, which happened to
1943 work because 0=false and not-0=true, but is not correct code.
1944
7e634d24
PH
194568. The host_aton() function was not handling scoped IPv6 addresses (those
1946 with, for example, "%eth0" on the end) correctly.
1947
3e11c26b
PH
194869. Fixed some compiler warnings in acl.c for the bitmaps specified with
1949 negated items (that is, ~something) in unsigned ints. Some compilers
1950 apparently mutter when there is no cast.
1951
6729cf78
PH
195270. If an address verification called from an ACL failed, and did not produce a
1953 user-specific message (i.e. there was only a "system" message), nothing was
1954 put in $acl_verify_message. In this situation, it now puts the system
1955 message there.
1956
00f00ca5
PH
195771. Change 4.23/11 added synchronization checking at the start of an SMTP
1958 session; change 4.31/43 added the unwanted input to the log line - except
1959 that it did not do this in the start of session case. It now does.
1960
c9bdd01c
PH
196172. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1962 This is wrong and can cause the other end to generate a synchronization
1963 error if it is another Exim or anything else that does the synchronization
1964 check. A QUIT command is no longer sent after a timeout.
1965
d43194df
PH
196673. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1967 during host lookups.
1968
fe5b5d0b
PH
196974. The defer_ok option of callout verification was not working if it was used
1970 when verifying addresses in header lines, that is, for this case:
1971
1972 verify = header_sender/callout=defer_ok
1973
76a2d7ba
PH
197475. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1975 those file descriptors could be used for SMTP connections. If anything
1976 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1977 could be sent to the SMTP client, causing chaos. The daemon now opens
1978 stdin, stdout, and stderr to /dev/null when it puts itself into the
1979 background.
1980
198176. Arrange for output from Perl's "warn" command to be written to Exim's main
1982 log by default. The user can override this with suitable Perl magic.
1983
04f7d5b9
PH
198477. The use of log_message on a "discard" ACL verb, which is supposed to add to
1985 the log message when discard triggers, was not working for the DATA ACL or
1986 for the non-SMTP ACL.
1987
bc60667e
PH
198878. Error message wording change in sieve.c.
1989
bb6e88ff
PH
199079. If smtp_accept_max_per_host was set, the number of connections could be
1991 restricted to fewer than expected, because the daemon was trying to set up
1992 a new connection before checking whether the processes handling previous
1993 connections had finished. The check for completed processes is now done
1994 earlier. On busy systems, this bug wouldn't be noticed because something
1995 else would have woken the daemon, and it would have reaped the completed
1996 process earlier.
1997
1e70f85b
PH
199880. If a message was submitted locally by a user whose login name contained one
1999 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2000 It caused a spool format error. I have fixed the spool reading code. A
2001 related problem was that the "from" clause in the Received: line became
2002 illegal because of the space(s). It is now covered by ${quote_local_part.
2003
200481. Included the latest eximstats from Steve (adds average sizes to HTML Top
2005 tables).
2006
4e01f9d6
PH
200782. Updated OS/Makefile-AIX as per message from Mike Meredith.
2008
1ee1cef2
PH
200983. Patch from Sieve maintainer to fix unterminated string problem in
2010 "vacation" handling.
2011
6e2b4ccc
PH
201284. Some minor changes to the Linux configuration files to help with other
2013 OS variants using glibc.
2014
8e669ac1
PH
201585. One more patch for Sieve to update vacation handling to latest spec.
2016
495ae4b0 2017
bbe902f0
PH
2018----------------------------------------------------
2019See the note above about the 4.44 and 4.50 releases.
2020----------------------------------------------------
2021
2022
2023Exim version 4.44
2024-----------------
2025
2026 1. Change 4.43/35 introduced a bug that caused file counts to be
2027 incorrectly computed when quota_filecount was set in an appendfile
2028 transport
2029
2030 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2031 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2032 place.
2033
2034 3. Give more explanation in the error message when the command for a transport
2035 filter fails to execute.
2036
2037 4. There are several places where Exim runs a non-Exim command in a
2038 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2039 was being done only for the command run by the queryprogram router. It is
2040 now done for all such subprocesses. The other cases are: ${run, transport
2041 filters, and the commands run by the lmtp and pipe transports.
2042
2043 5. Some older OS have a limit of 256 on the maximum number of file
2044 descriptors. Exim was using setrlimit() to set 1000 as a large value
2045 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2046 systems. I've change it so that if it can't get 1000, it tries for 256.
2047
2048 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2049 was an oversight, and furthermore, ever since the addition of extra
2050 controls (e.g. 4.43/32), the checks on when to allow different forms of
2051 "control" were broken. There should now be diagnostics for all cases when a
2052 control that does not make sense is encountered.
2053
2054 7. $recipients is now available in the predata ACL (oversight).
2055
2056 8. Tidy the search cache before the fork to do a delivery from a message
2057 received from the command line. Otherwise the child will trigger a lookup
2058 failure and thereby defer the delivery if it tries to use (for example) a
2059 cached ldap connection that the parent has called unbind on.
2060
2061 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2062 of $address_data from the recipient verification was clobbered by the
2063 sender verification.
2064
206510. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2066 was its contents. (It was OK if the option was not defined at all.)
2067
206811. A "Completed" log line is now written for messages that are removed from
2069 the spool by the -Mrm option.
2070
207112. $host_address is now set to the target address during the checking of
2072 ignore_target_hosts.
2073
207413. When checking ignore_target_hosts for an ipliteral router, no host name was
2075 being passed; this would have caused $sender_host_name to have been used if
2076 matching the list had actually called for a host name (not very likely,
2077 since this list is usually IP addresses). A host name is now passed as
2078 "[x.x.x.x]".
2079
208014. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2081 code that specifies a non-restarting handler (typically sigaction() in
2082 modern systems) in an attempt to fix a rare and obscure crash bug.
2083
208415. Narrowed the window for a race in the daemon that could cause it to ignore
2085 SIGCHLD signals. This is not a major problem, because they are used only to
2086 wake it up if nothing else does.
2087
208816. A malformed maildirsize file could cause Exim to calculate negative values
2089 for the mailbox size or file count. Odd effects could occur as a result.
2090 The maildirsize information is now recalculated if the size or filecount
2091 end up negative.
2092
209317. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2094 support for a long time. Removed HAVE_SYS_VFS_H.
2095
ea3a6f44 209618. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2097
209819. Allow an empty sender to be matched against a lookup in an address list.
2099 Previously the only cases considered were a regular expression, or an
2100 empty pattern.
2101
210220. Exim went into a mad DNS lookup loop when doing a callout where the
2103 host was specified on the transport, if the DNS lookup yielded more than
2104 one IP address.
2105
ea3a6f44
NM
210621. The RFC2047 encoding function was originally intended for short strings
2107 such as real names; it was not keeping to the 75-character limit for
2108 encoded words that the RFC imposes. It now respects the limit, and
2109 generates multiple encoded words if necessary. To be on the safe side, I
2110 have increased the buffer size for the ${rfc2047: expansion operator from
2111 1024 to 2048 bytes.
bbe902f0 2112
ea3a6f44
NM
211322. Failure to deliver a bounce message always caused it to be frozen, even if
2114 there was an errors_to setting on the router. The errors_to setting is now
2115 respected.
bbe902f0
PH
2116
211723. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2118 canonical form (fully expanded) before being placed in
2119 $sender_host_address.
2120
212124. Updated eximstats to version 1.33
2122
ea3a6f44
NM
212325. Include certificate and key file names in error message when GnuTLS fails
2124 to set them up, because the GnuTLS error message doesn't include the name
2125 of the failing file when there is a problem reading it.
bbe902f0
PH
2126
212726. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2128 As per change 25.
bbe902f0 2129
ea3a6f44
NM
213027. Reset the locale to "C" after calling embedded Perl, in case it was changed
2131 (this can affect the format of dates).
bbe902f0 2132
ea3a6f44
NM
213328. exim_tidydb, when checking for the continued existence of a message for
2134 which it has found a message-specific retry record, was not finding
2135 messages that were in split spool directories. Consequently, it was
2136 deleting retry records that should have stayed in existence.
bbe902f0
PH
2137
213829. eximstats updated to version 1.35
2139 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2140 1.35 - bugfix such that pie charts by volume are generated correctly
2141
ea3a6f44
NM
214230. The SPA authentication driver was not abandoning authentication and moving
2143 on to the next authenticator when an expansion was forced to fail,
2144 contradicting the general specification for all authenticators. Instead it
2145 was generating a temporary error. It now behaves as specified.
bbe902f0 2146
ea3a6f44
NM
214731. The default ordering of permitted cipher suites for GnuTLS was pessimal
2148 (the order specifies the preference for clients). The order is now AES256,
2149 AES128, 3DES, ARCFOUR128.
bbe902f0 2150
ea3a6f44
NM
215131. Small patch to Sieve code - explicitly set From: when generating an
2152 autoreply.
bbe902f0 2153
ea3a6f44
NM
215432. Exim crashed if a remote delivery caused a very long error message to be
2155 recorded - for instance if somebody sent an entire SpamAssassin report back
2156 as a large number of 550 error lines. This bug was coincidentally fixed by
2157 increasing the size of one of Exim's internal buffers (big_buffer) that
2158 happened as part of the Exiscan merge. However, to be on the safe side, I
2159 have made the code more robust (and fixed the comments that describe what
2160 is going on).
bbe902f0 2161
ea3a6f44
NM
216233. Some experimental protocols are using DNS PTR records for new purposes. The
2163 keys for these records are domain names, not reversed IP addresses. The
2164 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2165 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2166 CAN-2005-0021
2167
ea3a6f44
NM
216834. The host_aton() function is supposed to be passed a string that is known
2169 to be a valid IP address. However, in the case of IPv6 addresses, it was
2170 not checking this. This is a hostage to fortune. Exim now panics and dies
2171 if the condition is not met. A case was found where this could be provoked
2172 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2173 components; fortuitously, this particular loophole had already been fixed
2174 by change 4.50/55 or 4.44/33 above.
2175
2176 If there are any other similar loopholes, the new check in host_aton()
2177 itself should stop them being exploited. The report I received stated that
2178 data on the command line could provoke the exploit when Exim was running as
2179 exim, but did not say which command line option was involved. All I could
2180 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2181 running as the user.
bbe902f0
PH
2182 CAN-2005-0021
2183
ea3a6f44
NM
218435. There was a buffer overflow vulnerability in the SPA authentication code
2185 (which came originally from the Samba project). I have added a test to the
2186 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2187 CAN-2005-0022
2188
ea3a6f44
NM
218936. The daemon start-up calls getloadavg() while still root for those OS that
2190 need the first call to be done as root, but it missed one case: when
2191 deliver_queue_load_max is set with deliver_drop_privilege. This is
2192 necessary for the benefit of the queue runner, because there is no re-exec
2193 when deliver_drop_privilege is set.
bbe902f0 2194
ea3a6f44
NM
219537. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2196 was in use, was not putting the data itself into the right store pool;
2197 consequently, it could be overwritten for a subsequent message in the same
2198 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2199 the caching.)
bbe902f0 2200
ea3a6f44
NM
220138. Sometimes the final signoff response after QUIT could fail to get
2202 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2203 < 0 before doing a fflush(). This bug looks as though it goes back to the
2204 introduction of TLS in release 3.20, but "sometimes" must have been rare
2205 because the tests only now provoked it.
bbe902f0
PH
2206
2207
495ae4b0
PH
2208Exim version 4.43
2209-----------------
2210
2211 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2212 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2213 Now it returns an integer. A number of calls were still expecting a T/F
2214 return. Fortuitously, in all cases, the tests worked in OK situations,
2215 which is the norm. However, things would have gone wrong on any write
2216 failures on the smtp file descriptor. This function is used when sending
2217 messages over SMTP and also when doing verify callouts.
2218
2219 2. When Exim is called to do synchronous delivery of a locally submitted
2220 message (the -odf or -odi options), it no longer closes stderr before doing
2221 the delivery.
2222
2223 3. Implemented the mua_wrapper option.
2224
2225 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2226
2227 5. Implemented the functions header_remove(), header_testname(),
2228 header_add_at_position(), and receive_remove_recipient(), and exported them
2229 to local_scan().
2230
2231 6. If an ACL "warn" statement specified the addition of headers, Exim already
2232 inserted X-ACL-Warn: at the start if there was no header name. However, it
2233 was not making this test for the second and subsequent header lines if
2234 there were newlines in the string. This meant that an invalid header could
2235 be inserted if Exim was badly configured.
2236
2237 7. Allow an ACL "warn" statement to add header lines at the start or after all
2238 the Received: headers, as well as at the end.
2239
2240 8. Added the rcpt_4xx retry error code.
2241
2242 9. Added postmaster_mailfrom=xxx to callout verification option.
2243
224410. Added mailfrom=xxxx to the callout verification option, for verify=
2245 header_sender only.
2246
224711. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2248 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2249
225012. Inserted some casts to stop certain compilers warning when using pointer
2251 differences as field lengths or precisions in printf-type calls (mostly
2252 affecting debugging statements).
2253
225413. Added optional readline() support for -be (dynamically loaded).
2255
225614. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2257 same clock tick as a message's arrival, so that its received time was the
2258 same as the "first fail" time on the retry record, and that message
2259 remained on the queue past the ultimate address timeout, every queue runner
2260 would try a delivery (because it was past the ultimate address timeout) but
2261 after another failure, the ultimate address timeout, which should have then
2262 bounced the address, did not kick in. This was a "< instead of <=" error;
2263 in most cases the first failure would have been in the next clock tick
2264 after the received time, and all would be well.
2265
226615. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2267 being recognized when the domain list was tested by the match_domain
2268 condition in an expansion string.
2269
227016. Added the ${str2b64: operator.
2271
227217. Exim was always calling setrlimit() to set a large limit for the number of
2273 processes, without checking whether the existing limit was already
2274 adequate. (It did check for the limit on file descriptors.) Furthermore,
2275 errors from getrlimit() and setrlimit() were being ignored. Now they are
2276 logged to the main and panic logs, but Exim does carry on, to try to do its
2277 job under whatever limits there are.
2278
227918. Imported PCRE 5.0.
2280
228119. Trivial typo in log message " temporarily refused connection" (the leading
2282 space).
2283
228420. If the log selector return_path_on_delivery was set and an address was
2285 redirected to /dev/null, the delivery process crashed because it assumed
2286 that a return path would always be set for a "successful" delivery. In this
2287 case, the whole delivery is bypassed as an optimization, and therefore no
2288 return path is set.
2289
229021. Internal re-arrangement: the function for sending a challenge and reading
2291 a response while authentication was assuming a zero-terminated challenge
2292 string. It's now changed to take a pointer and a length, to allow for
2293 binary data in such strings.
2294
229522. Added the cyrus_sasl authenticator (code supplied by MBM).
2296
229723. Exim was not respecting finduser_retries when seeking the login of the
2298 uid under which it was called; it was always trying 10 times. (The default
2299 setting of finduser_retries is zero.) Also, it was sleeping after the final
2300 failure, which is pointless.
2301
230224. Implemented tls_on_connect_ports.
2303
230425. Implemented acl_smtp_predata.
2305
230626. If the domain in control=submission is set empty, Exim assumes that the
2307 authenticated id is a complete email address when it generates From: or
2308 Sender: header lines.
2309
231027. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2311 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2312 chown and chgrp in /bin and hostname in /usr/bin.
2313
231428. Exim was keeping the "process log" file open after each use, just as it
2315 does for the main log. This opens the possibility of it remaining open for
2316 long periods when the USR1 signal hits a daemon. Occasional processlog
2317 errors were reported, that could have been caused by this. Anyway, it seems
2318 much more sensible not to leave this file open at all, so that is what now
2319 happens.
2320
232129. The long-running daemon process does not normally write to the log once it
2322 has entered its main loop, and it closes the log before doing so. This is
2323 so that log files can straightforwardly be renamed and moved. However,
2324 there are a couple of unusual error situations where the daemon does write
2325 log entries, and I had neglected to close the log afterwards.
2326
232730. The text of an SMTP error response that was received during a remote
2328 delivery was being truncated at 512 bytes. This is too short for some of
2329 the long messages that one sometimes sees. I've increased the limit to
2330 1024.
2331
233231. It is now possible to make retry rules that apply only when a message has a
2333 specific sender, in particular, an empty sender.
2334
233532. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2336 it possible to be selective about when SMTP synchronization is enforced.
2337
233833. Added "control = caseful_local_part" and "control = "caselower_local_part".
2339
234032. Implemented hosts_connection_nolog.
2341
234233. Added an ACL for QUIT.
2343
234434. Setting "delay_warning=" to disable warnings was not working; it gave a
2345 syntax error.
2346
234735. Added mailbox_size and mailbox_filecount to appendfile.
2348
234936. Added control = no_multiline_responses to ACLs.
2350
235137. There was a bug in the logic of the code that waits for the clock to tick
2352 in the case where the clock went backwards by a substantial amount such
2353 that the microsecond fraction of "now" was more than the microsecond
2354 fraction of "then" (but the whole seconds number was less).
2355
235638. Added support for the libradius Radius client library this is found on
2357 FreeBSD (previously only the radiusclient library was supported).
2358
2359
2360Exim version 4.42
2361-----------------
2362
2363 1. When certain lookups returned multiple values in the form name=value, the
2364 quoting of the values was not always being done properly. Specifically:
2365 (a) If the value started with a double quote, but contained no whitespace,
2366 it was not quoted.
2367 (b) If the value contained whitespace other than a space character (i.e.
2368 tabs or newlines or carriage returns) it was not quoted.
2369 This fix has been applied to the mysql and pgsql lookups by writing a
2370 separate quoting function and calling it from the lookup code. The fix
2371 should probably also be applied to nisplus, ibase and oracle lookups, but
2372 since I cannot test any of those, I have not disturbed their existing code.
2373
2374 2. A hit in the callout cache for a specific address caused a log line with no
2375 reason for rejecting RCPT. Now it says "Previous (cached) callout
2376 verification failure".
2377
2378 3. There was an off-by-one bug in the queryprogram router. An over-long
2379 return line was truncated at 256 instead of 255 characters, thereby
2380 overflowing its buffer with the terminating zero. As well as fixing this, I
2381 have increased the buffer size to 1024 (and made a note to document this).
2382
2383 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2384 when Exim is waiting for an SMTP response from a remote server, Exim
2385 restarts its select() call on the socket, thereby resetting its timeout.
2386 This is not a problem when such interrupts are rare. Somebody set up a cron
2387 job to run exiwhat every 2 minutes, which is less than the normal select()
2388 timeout (5 or 10 minutes). This meant that the select() timeout never
2389 kicked in because it was always reset. I have fixed this by comparing the
2390 time when an interrupt arrives with the time at the start of the first call
2391 to select(). If more time than the timeout has elapsed, the interrupt is
2392 treated as a timeout.
2393
2394 5. Some internal re-factoring in preparation for the addition of Sieve
2395 extensions (by MH). In particular, the "personal" test is moved to a
2396 separate function, and given an option for scanning Cc: and Bcc: (which is
2397 not set for Exim filters).
2398
2399 6. When Exim created an email address using the login of the caller as the
2400 local part (e.g. when creating a From: or Sender: header line), it was not
2401 quoting the local part when it contained special characters such as @.
2402
2403 7. Installed new OpenBSD configuration files.
2404
2405 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2406 try to make them clearer.
2407
2408 9. Callout options, other than the timeout value, were being ignored when
2409 verifying sender addresses in header lines. For example, when using
2410
2411 verify = header_sender/callout=no_cache
2412
2413 the cache was (incorrectly) being used.
2414
241510. Added a missing instance of ${EXE} to the exim_install script; this affects
2416 only the Cygwin environment.
2417
241811. When return_path_on_delivery was set as a log selector, if different remote
2419 addresses in the same message used different return paths and parallel
2420 remote delivery occurred, the wrong values would sometimes be logged.
2421 (Whenever a remote delivery process finished, the return path value from
2422 the most recently started remote delivery process was logged.)
2423
242412. RFC 3848 specifies standard names for the "with" phrase in Received: header
2425 lines when AUTH and/or TLS are in use. This is the "received protocol"
2426 field. Exim used to use "asmtp" for authenticated SMTP, without any
2427 indication (in the protocol name) for TLS use. Now it follows the RFC and
2428 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2429 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2430 names appear in log lines as well as in Received: header lines.
2431
243213. Installed MH's patches for Sieve to add the "copy" and "vacation"
2433 extensions, and comparison tests, and to fix some bugs.
2434
243514. Changes to the "personal" filter test:
2436
2437 (1) The test was buggy in that it was just doing the equivalent of
2438 "contains" tests on header lines. For example, if a user's address was
2439 anne@some.where, the "personal" test would incorrectly be true for
2440
2441 To: susanne@some.where
2442
2443 This test is now done by extracting each address from the header in turn,
2444 and checking the entire address. Other tests that are part of "personal"
2445 are now done using regular expressions (for example, to check local parts
2446 of addresses in From: header lines).
2447
2448 (2) The list of non-personal local parts in From: addresses has been
2449 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2450 taken from the Sieve specification recommendations.
2451
2452 (3) If the message contains any header line starting with "List-" it is
2453 treated as non-personal.
2454
2455 (4) The test for "circular" in the Subject: header line has been removed
2456 because it now seems ill-conceived.
2457
245815. Minor typos in src/EDITME comments corrected.
2459
246016. Installed latest exipick from John Jetmore.
2461
246217. If headers_add on a router specified a text string that was too long for
2463 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2464 of string_sprintf() is now avoided.
2465
246618. $message_body_size was not set (it was always zero) when running the DATA
2467 ACL and the local_scan() function.
2468
246919. For the "mail" command in an Exim filter, no default was being set for
2470 the once_repeat time, causing a random time value to be used if "once" was
2471 specified. (If the value happened to be <= 0, no repeat happened.) The
2472 default is now 0s, meaning "never repeat". The "vacation" command was OK
2473 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2474 (I found it when inspecting the code).
2475
247620. There is now an overall timeout for performing a callout verification. It
2477 defaults to 4 times the callout timeout, which applies to individual SMTP
2478 commands during the callout. The overall timeout applies when there is more
2479 than one host that can be tried. The timeout is checked before trying the
2480 next host. This prevents very long delays if there are a large number of
2481 hosts and all are timing out (e.g. when the network connections are timing
2482 out). The value of the overall timeout can be changed by specifying an
2483 additional sub-option for "callout", called "maxwait". For example:
2484
2485 verify = sender/callout=5s,maxwait=20s
2486
248721. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2488 to the end before writing, but this should make it even safer).
2489
249022. Exim was forgetting that it had advertised PIPELINING for the second and
2491 subsequent messages on an SMTP connection. It was also not resetting its
2492 memory on STARTTLS and an internal HELO.
2493
249423. When Exim logs an SMTP synchronization error within a session, it now
2495 records whether PIPELINING has been advertised or not.
2496
249724. Added 3 instances of "(long int)" casts to time_t variables that were being
2498 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2499 rather than long int.
2500
250125. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2502
250326. Added the never_mail option to autoreply.
2504
2505
2506Exim version 4.41
2507-----------------
2508
2509 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2510 crash if the getsockname() call failed; this can happen if a connection is
2511 closed very soon after it is established. The problem was simply in the
2512 order in which certain operations were done, causing Exim to try to write
2513 to the SMTP stream before it had set up the file descriptor. The bug has
2514 been fixed by making things happen in the correct order.
2515
2516
2517Exim version 4.40
2518-----------------
2519
2520 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2521 before the connection was closed, thus losing the rejection response.
2522
2523 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2524 some early Solaris releases, but causes trouble in current releases where
2525 socklen_t is defined.
2526
2527 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2528 always exist.
2529
2530 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2531 configured.
2532
2533 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2534 that releasing the top of it at the end releases what was used for sub-
2535 expansions (unless the block got too big). However, discard this block if
2536 the first thing is a variable or header, so that we can use its block when
2537 it is dynamic (useful for very large $message_headers, for example).
2538
2539 6. Lookups now cache *every* query, not just the most recent. A new, separate
2540 store pool is used for this. It can be recovered when all lookup caches are
2541 flushed. Lookups now release memory at the end of their result strings.
2542 This has involved some general refactoring of the lookup sources.
2543
2544 7. Some code has been added to the store_xxx() functions to reduce the amount
2545 of flapping under certain conditions.
2546
2547 8. log_incoming_interface used to affect only the <= reception log lines. Now
2548 it causes the local interface and port to be added to several more SMTP log
2549 lines, for example "SMTP connection from", and rejection lines.
2550
2551 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2552
255310. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2554
255511. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2556 could be overwritten at the end of the current message (or the start of a
2557 new message if it was set in a HELO ACL). The value is now preserved for
2558 the duration of the SMTP connection.
2559
256012. If a transport had a headers_rewrite setting, and a matching header line
2561 contained an unqualified address, that address was qualified, even if it
2562 did not match any rewriting rules. The underlying bug was that the values
2563 of the flags that permit the existence of unqualified sender and recipient
2564 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2565 non-local messages, and by -bnq for local messages) were not being
2566 preserved with the message after it was received.
2567
256813. When Exim was logging an SMTP synchronization error, it could sometimes log
2569 "next input=" as part of the text comprising the host identity instead of
2570 the correct text. The code was using the same buffer for two different
2571 strings. However, depending on which order the printing function evaluated
2572 its arguments, the bug did not always show up. Under Linux, for example, my
2573 test suite worked just fine.
2574
257514. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2576 doesn't work with some older versions of Perl. It has been changed to "my",
2577 which in any case is probably the better facility to use.
2578
257915. A really picky compiler found some instances of statements for creating
2580 error messages that either had too many or two few arguments for the format
2581 string.
2582
258316. The size of the buffer for calls to the DNS resolver has been increased
2584 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2585 for addresses that have a lot of PTR records. This alleviates a problem; it
2586 does not fully solve it.
2587
258817. A dnsdb lookup for PTR records that receives more data than will fit in the
2589 buffer now truncates the list and logs the incident, which is the same
2590 action as happens when Exim is looking up a host name and its aliases.
2591 Previously in this situation something unpredictable would happen;
2592 sometimes it was "internal error: store_reset failed".
2593
259418. If a server dropped the connection unexpectedly when an Exim client was
2595 using GnuTLS and trying to read a response, the client delivery process
2596 crashed while trying to generate an error log message.
2597
259819. If a "warn" verb in an ACL added multiple headers to a message in a single
2599 string, for example:
2600
2601 warn message = H1: something\nH2: something
2602
2603 the text was added as a single header line from Exim's point of view
2604 though it ended up OK in the delivered message. However, searching for the
2605 second and subsequent header lines using $h_h2: did not work. This has been
2606 fixed. Similarly, if a system filter added multiple headers in this way,
2607 the routers could not see them.
2608
260920. Expanded the error message when iplsearch is called with an invalid key to
2610 suggest using net-iplsearch in a host list.
2611
261221. When running tests using -bh, any delays imposed by "delay" modifiers in
2613 ACLs are no longer actually imposed (and a message to that effect is
2614 output).
2615
261622. If a "gecos" field in a passwd entry contained escaped characters, in
2617 particular, if it contained a \" sequence, Exim got it wrong when building
2618 a From: or a Sender: header from that name. A second bug also caused
2619 incorrect handling when an unquoted " was present following a character
2620 that needed quoting.
2621
262223. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2623 was not being matched caselessly.
2624
262524. Arranged for all hyphens in the exim.8 source to be escaped with
2626 backslashes.
2627
262825. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2629 properly. Recipient callout cache records were still being keyed to include
2630 the sender, even when use_sender was set false. This led to far more
2631 callouts that were necessary. The sender is no longer included in the key
2632 when use_sender is false.
2633
263426. Added "control = submission" modifier to ACLs.
2635
263627. Added the ${base62d: operator to decode base 62 numbers.
2637
263828. dnsdb lookups can now access SRV records.
2639
264029. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2641 the configuration file.
2642
264330. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2644 (-v) mode. This makes the output for a verbose queue run more intelligible.
2645
264631. Added a use_postmaster feature to recipient callouts.
2647
264832. Added the $body_zerocount variable, containing the number of binary zero
2649 bytes in the message body.
2650
265133. The time of last modification of the "new" subdirectory is now used as the
2652 "mailbox time last read" when there is a quota error for a maildir
2653 delivery.
2654
265534. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2656
265735. Added +ignore_unknown as a special item in host lists.
2658
265936. Code for decoding IPv6 addresses in host lists is now included, even if
2660 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2661 address was recognized as an IP address, but was then not correctly decoded
2662 into binary, causing unexpected and incorrect effects when compared with
2663 another IP address.
2664
2665
2666Exim version 4.34
2667-----------------
2668
2669 1. Very minor rewording of debugging text in manualroute to say "list of
2670 hosts" instead of "hostlist".
2671
2672 2. If verify=header_syntax was set, and a header line with an unqualified
2673 address (no domain) and a large number of spaces between the end of the
2674 name and the colon was received, the reception process suffered a buffer
2675 overflow, and (when I tested it) crashed. This was caused by some obsolete
2676 code that should have been removed. The fix is to remove it!
2677
2678 3. When running in the test harness, delay a bit after writing a bounce
2679 message to get a bit more predictability in the log output.
2680
2681 4. Added a call to search_tidyup() just before forking a reception process. In
2682 theory, someone could use a lookup in the expansion of smtp_accept_max_
2683 per_host which, without the tidyup, could leave open a database connection.
2684
2685 5. Added the variables $recipient_data and $sender_data which get set from a
2686 lookup success in an ACL "recipients" or "senders" condition, or a router
2687 "senders" option, similar to $domain_data and $local_part_data.
2688
2689 6. Moved the writing of debug_print from before to after the "senders" test
2690 for routers.
2691
2692 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2693 problems for message scanning, either using a data ACL, or using
2694 local_scan() because the Received: header was not generated till after they
2695 were called (in order to set the time as the time of reception completion).
2696 I have revised the way this works. The header is now generated after the
2697 body is received, but before the ACL or local_scan() are called. After they
2698 are run, the timestamp in the header is updated.
2699
2700
2701Exim version 4.33
2702-----------------
2703
2704 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2705 before starting a queue runner without re-exec. This happened only when
2706 deliver_drop_privilege was set or when the Exim user was set to root. The
2707 effect of the bug was that timeouts during subsequent deliveries caused
2708 crashes instead of being properly handled. The handler is now left at its
2709 default (and expected) setting.
2710
2711 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2712 message, again when deliver_drop_privilege is set or Exim is run as root.
2713 The bug described in (1) was not present in this case, but the tidying up
2714 of the other signals was missing. I have made the two cases consistent.
2715
2716 3. The ignore_target_hosts setting on a manualroute router was being ignored
2717 for hosts that were looked up using the /MX notation.
2718
2719 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2720 in domain lists.
2721
2722 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2723 operated on the sender address. After changing the $sender_address to <>
2724 for the sender address verify, Exim was re-instated it as the original
2725 (before rewriting) address, but remembering that it had rewritten it, so it
2726 wasn't rewriting it again. This bug also had the effect of breaking the
2727 sender address verification caching when the sender address was rewritten.
2728
2729 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2730 This has been changed so that if the ip literal address matches
2731 ignore_target_hosts, the router declines.
2732
2733 7. Added expansion conditions match_domain, match_address, and match_local_
2734 part (NOT match_host).
2735
2736 8. The placeholder for the Received: header didn't have a length field set.
2737
2738 9. Added code to Exim itself and to exim_lock to test for a specific race
2739 condition that could lead to file corruption when using MBX delivery. The
2740 issue is with the lockfile that is created in /tmp. If this file is removed
2741 after a process has opened it but before that process has acquired a lock,
2742 there is the potential for a second process to recreate the file and also
2743 acquire a lock. This could lead to two Exim processes writing to the file
2744 at the same time. The added code performs the same test as UW imapd; it
2745 checks after acquiring the lock that its file descriptor still refers to
2746 the same named file.
2747
274810. The buffer for building added header lines was of fixed size, 8192 bytes.
2749 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2750 when Exim is built.
2751
275211. Added the smtp_active_hostname option. If used, this will typically be made
2753 to depend on the incoming interface address. Because $interface_address is
2754 not set up until the daemon has forked a reception process, error responses
2755 that can happen earlier (such as "too many connections") no longer contain
2756 a host name.
2757
275812. If an expansion in a condition on a "warn" statement fails because a lookup
2759 defers, the "warn" statement is abandoned, and the next ACL statement is
2760 processed. Previously this caused the whole ACL to be aborted.
2761
276213. Added the iplsearch lookup type.
2763
276414. Added ident_timeout as a log selector.
2765
276615. Added tls_certificate_verified as a log selector.
2767
276816. Added a global option tls_require_ciphers (compare the smtp transport
2769 option of the same name). This controls incoming TLS connections.
2770
277117. I finally figured out how to make tls_require_ciphers do a similar thing
2772 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2773 before starting the TLS session.
2774
277518. Tabs are now shown as \t in -bP output.
2776
277719. If the log selector return_path_on_delivery was set, Exim crashed when
2778 bouncing a message because it had too many Received: header lines.
2779
278020. If two routers both had headers_remove settings, and the first one included
2781 a superfluous trailing colon, the final name in the first list and the
2782 first name in the second list were incorrectly joined into one item (with a
2783 colon in the middle).
2784
2785
2786Exim version 4.32
2787-----------------
2788
2789 1. Added -C and -D options to the exinext utility, mainly to make it easier
2790 to include in the automated testing, but these could be helpful when
2791 multiple configurations are in use.
2792
2793 2. The exinext utility was not formatting the output nicely when there was
2794 an alternate port involved in the retry record key, nor when there was a
2795 message id as well (for retries that were specific to a specific message
2796 and a specific host). It was also confused by IPv6 addresses, because of
2797 the additional colons they contain. I have fixed the IPv4 problem, and
2798 patched it up to do a reasonable job for IPv6.
2799
2800 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2801 delivery, the log line now contains "pipelined" if PIPELINING was used.
2802
2803 4. An SMTP transport process used to panic and die if the bind() call to set
2804 an explicit outgoing interface failed. This has been changed; it is now
2805 treated in the same way as a connect() failure.
2806
2807 5. A reference to $sender_host_name in the part of a conditional expansion
2808 that was being skipped was still causing a DNS lookup. This no longer
2809 occurs.
2810
2811 6. The def: expansion condition was not recognizing references to header lines
2812 that used bh_ and bheader_.
2813
2814 7. Added the _cache feature to named lists.
2815
2816 8. The code for checking quota_filecount in the appendfile transport was
2817 allowing one more file than it should have been.
2818
2819 9. For compatibility with Sendmail, the command line option
2820
2821 -prval:sval
2822
2823 is equivalent to
2824
2825 -oMr rval -oMs sval
2826
2827 and sets the incoming protocol and host name (for trusted callers). The
2828 host name and its colon can be omitted when only the protocol is to be set.
2829 Note the Exim already has two private options, -pd and -ps, that refer to
2830 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2831 "s", but I don't think that's a major issue.
2832
283310. A number of refactoring changes to the code, none of which should affect
2834 Exim's behaviour:
2835
2836 (a) The number of logging options was getting close to filling up the
2837 32-bit word that was used as a bit map. I have split them into two classes:
2838 those that are passed in the argument to log_write(), and those that are
2839 only ever tested independently outside of that function. These are now in
2840 separate 32-bit words, so there is plenty of room for expansion again.
2841 There is no change in the user interface or the logging behaviour.
2842
2843 (b) When building, for example, log lines, the code previously used a
2844 macro that called string_cat() twice, in order to add two strings. This is
2845 not really sufficiently general. Furthermore, there was one instance where
2846 it was actually wrong because one of the argument was used twice, and in
2847 one call a function was used. (As it happened, calling the function twice
2848 did not affect the overall behaviour.) The macro has been replaced by a
2849 function that can join an arbitrary number of extra strings onto a growing
2850 string.
2851
2852 (c) The code for expansion conditions now uses a table and a binary chop
2853 instead of a serial search (which was left over from when there were very
2854 few conditions). Also, it now recognizes conditions like "pam" even when
2855 the relevant support is not compiled in: a suitably worded error message is
2856 given if an attempt is made to use such a condition.
2857
285811. Added ${time_interval:xxxxx}.
2859
286012. A bug was causing one of the ddress fields not to be passed back correctly
2861 from remote delivery subprocesses. The field in question was not being
2862 subsequently used, so this caused to problems in practice.
2863
286413. Added new log selectors queue_time and deliver_time.
2865
286614. Might have fixed a bug in maildirsizefile handling that threw up
2867 "unexpected character" debug warnings, and recalculated the data
2868 unnecessarily. In any case, I expanded the warning message to give more
2869 information.
2870
287115. Added the message "Restricted characters in address" to the statements in
2872 the default ACL that block characters like @ and % in local parts.
2873
287416. Change 71 for release 4.31 proved to be much less benign that I imagined.
2875 Three changes have been made:
2876
2877 (a) There was a serious bug; a negative response to MAIL caused the whole
2878 recipient domain to be cached as invalid, thereby blocking all messages
2879 to all local parts at the same domain, from all senders. This bug has
2880 been fixed. The domain is no longer cached after a negative response to
2881 MAIL if the sender used is not empty.
2882
2883 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2884 been restored.
2885
2886 (c) A new callout option, "use_sender" has been added for people who want
2887 the modified behaviour.
2888
2889
2890Exim version 4.31
2891-----------------
2892
2893 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2894 Larry Rosenman.
2895
2896 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2897 indeed breaks things for older releases.
2898
2899 3. Added additional logging to the case where there is a problem reading data
2900 from a filter that is running in a subprocess using a pipe, in order to
2901 try to track down a specific problem.
2902
2903 4. Testing facility fudge: when running in the test harness and attempting
2904 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2905 getting "No route to host". Convert this to a timeout.
2906
2907 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2908 warning.
2909
2910 6. Some OS don't have socklen_t but use size_t instead. This affects the
2911 fifth argument of getsockopt() amongst other things. This is now
2912 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2913 can be set for individual OS. I have set it for SunOS5, OSF1, and
2914 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2915 some earlier ones do not.
2916
2917 7. Change 4.30/15 was not doing the test caselessly.
2918
2919 8. The standard form for an IPv6 address literal was being rejected by address
2920 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2921 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2922 this, as well as the form without the "IPv6" on the front (but only when
2923 address literals are enabled, of course).
2924
2925 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2926
292710. Exim crashed if a message with an empty sender address specified by -f
2928 encountered a router with an errors_to setting. This could be provoked only
2929 by a command such as
2930
2931 exim -f "" ...
2932
2933 where an empty string was supplied; "<>" did not hit this bug.
2934
293511. Installed PCRE release 4.5.
2936
293712. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2938 remained set. It is now erased.
2939
294013. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2941 times from message ids (which are base 36 rather than the normal 62).
2942
294314. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2944 were being counted as actual protocol errors, and logged if the log
2945 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2946 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2947 and DATA following a set of rejected RCPTs do not count as protocol errors.
2948 In other words, Exim assumes they were pipelined, though this may not
2949 actually be the case. Of course, in all cases the client gets an
2950 appropriate error code.
2951
295215. If a lookup fails in an ACL condition, a message about the failure may
2953 be available; it is used if testing the ACL cannot continue, because most
2954 such messages specify what the cause of the deferral is. However, some
2955 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2956 that caused an old message to be retained and used if a later statement
2957 caused a defer, replacing the real cause of the deferral.
2958
295916. If an IP address had so many PTR records that the DNS lookup buffer
2960 was not large enough to hold them, Exim could crash while trying to process
2961 the truncated data. It now detects and logs this case.
2962
296317. Further to 4.21/58, another change has been made: if (and only if) the
2964 first line of a message (the first header line) ends with CRLF, a bare LF
2965 in a subsequent header line has a space inserted after it, so as not to
2966 terminate the header.
2967
296818. Refactoring: tidied an ugly bit of code in appendfile that copied data
2969 unnecessarily, used atoi() instead of strtol(), and didn't check the
2970 termination when getting file sizes from file names by regex.
2971
297219. Completely re-implemented the support for maildirsize files, in the light
2973 of a number of problems with the previous contributed implementation
2974 (4.30/29). In particular:
2975
2976 . If the quota is zero, the maildirsize file is maintained, but no quota is
2977 imposed.
2978
2979 . If the maildir directory does not exist, it is created before any attempt
2980 to write a maildirsize file.
2981
2982 . The quota value in the file is just a cache; if the quota is changed in
2983 the transport, the new value overrides.
2984
2985 . A regular expression is available for excluding directories from the
2986 count.
2987
298820. The autoreply transport checks the characters in options that define the
2989 message's headers; it allows continued headers, but it was checking with
2990 isspace() after an embedded newline instead of explicitly looking for a
2991 space or a tab.
2992
299321. If all the "regular" hosts to which an address was routed had passed their
2994 expiry times, and had not reached their retry times, the address was
2995 bounced, even if fallback hosts were defined. Now Exim should go on to try
2996 the fallback hosts.
2997
299822. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2999 equivalent code in the SMTP transport. Some hosts send humungous responses
3000 to HELO/EHLO, more than 1024 it seems.
3001
300223. Refactoring: code in filter.c used (void *) for "any old type" but this
3003 gives compiler warnings in some environments. I've now done it "properly",
3004 using a union.
3005
300624. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3007 (because of problems with the built-in one) was declared to return uschar *
3008 instead of char *, causing compiler failure.
3009
301025. Fixed a file descriptor leak when processing alias/forward files.
3011
301226. Fixed a minor format string issue in dbfn.c.
3013
301427. Typo in exim.c: ("dmbnz" for "dbmnz").
3015
301628. If a filter file refered to $h_xxx or $message_headers, and the headers
3017 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3018 become corrupted.
3019
302029. When a sender address is verified, it is cached, to save repeating the test
3021 when there is more than one recipient in a message. However, when the
3022 verification involves a callout, it is possible for different callout
3023 options to be set for different recipients. It is too complicated to keep
3024 track of this in the cache, so now Exim always runs a verification when a
3025 callout is required, relying on the callout cache for the optimization.
3026 The overhead is duplication of the address routing, but this should not be
3027 too great.
3028
302930. Fixed a bug in callout caching. If a RCPT command caused the sender address
3030 to be verified with callout=postmaster, and the main callout worked but the
3031 postmaster check failed, the verification correctly failed. However, if a
3032 subsequent RCPT command asked for sender verification *without* the
3033 postmaster check, incorrect caching caused this verification also to fail,
3034 incorrectly.
3035
303631. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3037 it was not caching the DNS options (qualify_single, search_parents) that
3038 were used when the lookup failed. A subsequent lookup with different
3039 options therefore always gave the same answer, though there were cases
3040 where it should not have. (Example: a "domains = !$mx_any" option on a
3041 dnslookup router: the "domains" option is always processed without any
3042 widening, but the router might have qualify_single set.) Now Exim uses the
3043 cached value only when the same options are set.
3044
304532. Added John Jetmore's "exipick" utility to the distribution.
3046
304733. GnuTLS: When an attempt to start a TLS session fails for any reason other
3048 than a timeout (e.g. a certificate is required, and is not provided), an
3049 Exim server now closes the connection immediately. Previously it waited for
3050 the client to close - but if the client is SSL, it seems that they each
3051 wait for each other, leading to a delay before one of them times out.
3052
305334: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3054 maintained 0.8.x compatibility because I don't think many are using it, and
3055 it is clearly obsolete.
3056
305735. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3058 transport.
3059
306036. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3061 client certificate was expired. A simple patch fixes this, though I don't
3062 understand the full logic of why the verify callback is called multiple
3063 times.
3064
306537. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3066 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3067 which causes problems with some clients (such as the Certicom SSL Plus
3068 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3069 disables the coutermeasure allowing Eudora to connect."
3070
307138. Exim was not checking that a write() to a log file succeeded. This could
3072 lead to Bad Things if a log got too big, in particular if it hit a file
3073 size limit. Exim now panics and dies if it cannot write to a log file, just
3074 as it does if it cannot open a log file.
3075
307639. Modified OS/Makefile-Linux so that it now contains
3077
3078 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3079
3080 The two -D definitions ensure that Exim is compiled with large file
3081 support, which makes it possible to handle log files that are bigger than
3082 2^31.
3083
308440. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3085 instance) a domain was checked against a named list that involved a lookup,
3086 causing $domain_data to be set, then another domain was checked against the
3087 same list, then the first domain was re-checked, the value of $domain_data
3088 after the final check could be wrong. In particular, if the second check
3089 failed, it could be set empty. This bug probably also applied to
3090 $localpart_data.
3091
309241. The strip_trailing_dot option was not being applied to the address given
3093 with the -f command-line option.
3094
309542. The code for reading a message's header from the spool was incrementing
3096 $received_count, but never initializing it. This meant that the value was
3097 incorrect (doubled) while delivering a message in the same process in which
3098 it was received. In the most common configuration of Exim, this never
3099 happens - a fresh exec is done - but it can happen when
3100 deliver_drop_privilege is set.
3101
310243. When Exim logs an SMTP synchronization error - client data sent too soon -
3103 it now includes up to 150 characters of the unexpected data in the log
3104 line.
3105
310644. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3107 and building data strings. The size of both of these buffers was 10 000
3108 bytes - far larger than anybody would *ever* want, thought I. Needless to
3109 say, somebody hit the limit. I have increased the maximum line length to
3110 20 000 and the maximum data length of concatenated lines to 100 000. I have
3111 also fixed two bugs, because there was no checking on these buffers. Tsk,
3112 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3113 buffer is too small.
3114
311545. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3116 lsearch lookups. Now it does.
3117
311846. When parsing a route_list item in a manualroute router, a fixed-length
3119 buffer was used for the list of hosts. I made this 1024 bytes long,
3120 thinking that nobody would ever have a list of hosts that long. Wrong.
3121 Somebody had a whole pile of complicated expansion conditions, and the
3122 string was silently truncated, leading to an expansion error. It turns out
3123 that it is easier to change to an unlimited length (owing to other changes
3124 that have happened since this code was originally written) than to build
3125 structure for giving a limitation error. The length of the item that
3126 expands into the list of hosts is now unlimited.
3127
312847. The lsearch lookup could not handle data where the length of text line was
3129 more than 4095 characters. Such lines were truncated, leading to shortened
3130 data being returned. It should now handle lines of any length.
3131
313248. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3133 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3134 ACL").
3135
313649. Cosmetic tidy to scripts like exicyclog that are generated by globally
3137 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3138 no longer happens in comment lines. A list of replacements is now placed
3139 at the head of all of the source files, except those whose only change is
3140 to replace PERL_COMMAND in the very first #! line.
3141
314250. Replaced the slow insertion sort in queue.c, for sorting the list of
3143 messages on the queue, with a bottom-up merge sort, using code contributed
3144 by Michael Haardt. This should make operations like -bp somewhat faster on
3145 large queues. It won't affect queue runners, except when queue_run_in_order
3146 is set.
3147
314851. Installed eximstats 1.31 in the distribution.
3149
315052. Added support for SRV lookups to the dnslookup router.
3151
315253. If an ACL referred to $message_body or $message_body_end, the value was not
3153 reset for any messages that followed in the same SMTP session.
3154
315554. The store-handling optimization for building very long strings was not
3156 differentiating between the different store pools. I don't think this
3157 actually made any difference in practice, but I've tidied it.
3158
315955. While running the routers to verify a sender address, $sender_address
3160 was still set to the sender address. This is wrong, because when routing to
3161 send a bounce to the sender, it would be empty. Therefore, I have changed
3162 it so that, while verifying a sender address, $sender_address is set to <>.
3163 (There is no change to what happens when verifying a recipient address.)
3164
316556. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3166 target A or AAAA records (if not already returned) without resetting the
3167 qualify_single or search_parents options of the DNS resolver. These are
3168 inappropriate in this case because the targets of MX and SRV records must
3169 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3170 target that, when qualified, matched something in the local domain. These
3171 two options are now turned off when doing these lookups.
3172
317357. It seems that at least some releases of Reiserfs (which does not have the
3174 concept of a fixed number of inodes) returns zero and not -1 for the
3175 number of available inodes. This interacted badly with check_spool_inodes,
3176 which assumed that -1 was the "no such thing" setting. What I have done is
3177 to check that the total number of inodes is greater than zero before doing
3178 the test of how many are available.
3179
318058. When a "warn" ACL statement has a log_message modifier, the message is
3181 remembered, and not repeated. This is to avoid a lot of repetition when a
3182 message has many recipients that cause the same warning to be written.
3183 Howewer, Exim was preserving the list of already written lines for an
3184 entire SMTP session, which doesn't seem right. The memory is now reset if a
3185 new message is started.
3186
318759. The "rewrite" debugging flag was not showing the result of rewriting in the
3188 debugging output unless log_rewrite was also set.
3189
319060. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3191 of (int)(handle) when we know that handle contains (void *)(-1).
3192
319361. The Exim daemon panic-logs an error return when it closes the incoming
3194 connection. However "connection reset by peer" seems to be common, and
3195 isn't really an error worthy of noting specially, so that particular error
3196 is no long logged.
3197
319862. When Exim is trying to find all the local interfaces, it used to panic and
3199 die if the ioctl to get the interface flags failed. However, it seems that
3200 on at least one OS (Solaris 9) it is possible to have an interface that is
3201 included in the list of interfaces, but for which you get a failure error
3202 for this call. This happens when the interface is not "plumbed" into a
3203 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3204 failure of the "get flags" call assumes that the interface is down.
3205
320663. Added a ${eval10: operator, which assumes all numbers are decimal. This
3207 makes life easier for people who are doing arithmetic on fields extracted
3208 from dates, where you often get leading zeros that should not be
3209 interpreted as octal.
3210
321164. Added qualify_domain to the redirect router, to override the global
3212 setting.
3213
321465. If a pathologically long header line contained very many addresses (the
3215 report of this problem mentioned 10 000) and each of them was rewritten,
3216 Exim could use up a very large amount of memory. (It kept on making new
3217 copies of the header line as it rewrote, and never released the old ones.)
3218 At the expense of a bit more processing, the header rewriting function has
3219 been changed so that it no longer eats memory in this way.
3220
322166. The generation of the Received: header has been moved from the time that a
3222 message starts to be received, to the time that it finishes. The timestamp
3223 in the Received: header should now be very close to that of the <= log
3224 line. There are two side-effects of this change:
3225
3226 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3227 logged header lines no longer include the local Received: line, because
3228 it has not yet been created. The same applies to a copy of the message
3229 that is returned to a non-SMTP sender when a message is rejected.
3230
3231 (b) When a filter file is tested using -bf, no additional Received: header
3232 is added to the test message. After some thought, I decided that this
3233 is a bug fix.
3234
3235 This change does not affect the value of $received_for. It is still set
3236 after address rewriting, but before local_scan() is called.
3237
323867. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3239
324068. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3241 gave an unhelpful panic error message, and a defer error. I have managed to
3242 change this behaviour so that it now rejects any supplied certificate,
3243 which seems right, as the list of acceptable certificates is empty.
3244
324569. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3246 gave an unhelpful defer error. I have not managed to make this reject any
3247 supplied certificates, but the error message it gives is "no certificate
3248 supplied", which is not helpful.
3249
325070. exigrep's output now also includes lines that are not associated with any
3251 message, but which match the given pattern. Implemented by a patch from
3252 Martin Sluka, which also tidied up the Perl a bit.
3253
325471. Recipient callout verification, like sender verification, was using <> in
3255 the MAIL FROM command. This isn't really the right thing, since the actual
3256 sender may affect whether the remote host accepts the recipient or not. I
3257 have changed it to use the actual sender in the callout; this means that
3258 the cache record is now keyed on a recipient/sender pair, not just the
3259 recipient address. There doesn't seem to be a real danger of callout loops,
3260 since a callout by the remote host to check the sender would use <>.
3261 [SEE ABOVE: changed after hitting problems.]
3262
326372. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3264 temporary errors. However, in the case of such a code being given after
3265 the end of a data transmission (i.e. after ".") Exim was failing to write
3266 a retry record for the message. (Yes, there was some broken host that was
3267 actually sending 8xx at this point.)
3268
326973. An unknown lookup type in a host list could cause Exim to panic-die when
3270 the list was checked. (An example that provoked this was putting <; in the
3271 middle of a list instead of at the start.) If this happened during a DATA
3272 ACL check, a -D file could be left lying around. This kind of configuration
3273 error no longer causes Exim to die; instead it causes a defer errror. The
3274 incident is still logged to the main and panic logs.
3275
327674. Buglet left over from Exim 3 conversion. The message "too many messages
3277 in one connection" was written to the rejectlog but not the mainlog, except
3278 when address rewriting (yes!) was being logged.
3279
328075. Added write_rejectlog option.
3281
328276. When a system filter was run not as root (that is, when system_filter_user
3283 was set), the values of the $n variables were not being returned to the
3284 main process; thus, they were not subsequently available in the $sn
3285 variables.
3286
328777. Added +return_path_on_delivery log selector.
3288
328978. A connection timeout was being treated differently from recipients deferred
3290 when testing hosts_max_try with a message that was older than the host's
3291 retry timeout. (The host should not be counted, thus allowing all hosts to
3292 be tried at least once before bouncing.) This may have been the cause of an
3293 occasionally reported bug whereby a message would remain on the queue
3294 longer than the retry timeout, but would be bounced if a delivery was
3295 forced. I say "may" because I never totally pinned down the problem;
3296 setting up timeout/retry tests is difficult. See also the next item.
3297
329879. The ultimate address timeout was not being applied to errors that involved
3299 a combination of host plus message (for example, a timeout on a MAIL
3300 command). When an address resolved to a number of possible hosts, and they
3301 were not all tried for each delivery (e.g. because of hosts_max_try), a
3302 message could remain on the queue longer than the retry timeout.
3303
330480. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3305 Haardt.
3306
330781. Fixed an obscure SMTP outgoing bug which required at least the following
3308 conditions: (a) there was another message waiting for the same server;
3309 (b) the server returned 5xx to all RCPT commands in the first message so
3310 that the message was not completed; (c) the server dropped the connection
3311 or gave a negative response to the RSET that Exim sends to abort the
3312 transaction. The observed case was a dropped connection after DATA that had
3313 been sent in pipelining mode. That is, the server had advertised PIPELINING
3314 but was not implementing it correctly. The effect of the bug was incorrect
3315 behaviour, such as trying another host, and this could lead to a crash.
3316
3317
3318Exim version 4.30
3319-----------------
3320
3321 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3322 and daemon.c were passed as pointers to ints; they should have been
3323 pointers to socklen_t variables (which are typically unsigned ints).
3324
3325 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3326 fixed.
3327
3328 3. Fixed a really odd bug that affected only the testing scheme; patching a
3329 certain fixed string in the binary changed the value of another string that
3330 happened to be identical to the end of the original first string.
3331
3332 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3333 name", it returns that address as the IP address. On some operating
3334 systems (e.g. Solaris), it also passes back the IP address string as the
3335 "host name". However, on others (e.g. Linux), it passes back an empty
3336 string. Exim wasn't checking for this, and was changing the host name to an
3337 empty string, assuming it had been canonicized.
3338
3339 5. Although rare, it is permitted to have more than one PTR record for a given
3340 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3341 all the names associated with an address, because they do in Solaris.
3342 However, it seems that they do not in Linux for data that comes from the
3343 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3344 I found this out when I moved to a new Linux workstation and tried to run
3345 the Exim test suite.
3346
3347 To get round this problem I have changed the code so that it now does its
3348 own call to the DNS to look up PTR records when searching for a host name.
3349 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3350 addresses that are only in /etc/hosts are still found.
3351
3352 This behaviour is, however, controlled by an option called host_lookup_
3353 order, which defaults to "bydns:byaddr". If people want to use the other
3354 order, or indeed, just use one or the other means of lookup, they can
3355 specify it in this variable.
3356
3357 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3358 some operating systems, this comes back from gethostbyaddr() as an empty
3359 string, and this is what Exim used to test for. However, it seems that in
3360 other systems, "." is yielded. Exim now tests for this case too.
3361
3362 7. The values of check_spool_space and check_log_space are now held internally
3363 as a number of kilobytes instead of an absolute number of bytes. If a
3364 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3365 kilobyte. This means that much larger values can be stored.
3366
3367 8. Exim monitor: an attempt to get the action menu when not actually pointing
3368 at a message produces an empty menu entitled "No message selected". This
3369 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3370 no entries in it ("Shell widget menu has zero width and/or height"). So I
3371 have added a single, blank menu entry in this case.
3372
3373 9. Added ${quote_local_part.
3374
337510. MIME decoding is now applied to the contents of Subject: header lines when
3376 they are logged.
3377
337811. Now that a reference to $sender_host_address automatically causes a reverse
3379 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3380 host lookup before query-style lookups in lists that might use this
3381 variable. This has therefore been abolished, and the "net-" prefix is no
3382 longer necessary for query-style lookups.
3383
338412. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3385 have been a typo for LFLAGS, so it has been changed.
3386
338713. The install script calls Exim with "-C /dev/null" in order to find the
3388 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3389 to be output. Howeve, since Exim outputs its version number before the
3390 error, it didn't break the script. It just looked ugly. I fixed this by
3391 always allowing "-C /dev/null" if the caller is root.
3392
339314. Ignore overlarge ACL variable number when reading spool file - insurance
3394 against a later release with more variables having written the file.
3395
339615. The standard form for an IPv6 address literal was being rejected by EHLO.
3397 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3398 this, as well as the form without the "IPv6" on the front.
3399
340016. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3401 OS/Makefile-Darwin file.
3402
340317. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3404 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3405
340618. After change 4.21/52, "%ld" was used to format the contents of the $inode
3407 variable. However, some OS use ints for inodes. I've added cast to long int
3408 to get rid of the compiler warning.
3409
341019. I had forgotten to lock out "/../" in configuration file names when
3411 ALT_CONFIG_PREFIX was set.
3412
341320. Routers used for verification do not need to specify transports. However,
3414 if such a router generated a host list, and callout was configured, Exim
3415 crashed, because it could not find a port number from the (non-existent)
3416 transport. It now assumes port 25 in this circumstance.
3417
341821. Added the -t option to exigrep.
3419
342022. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3421 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3422 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3423 them is set, LOOKUP_LSEARCH is forced.
3424
342523. "exim -bV" now outputs a list of lookups that are included in the binary.
3426
342724. Added sender and host information to the "rejected by local_scan()" log
3428 line; previously there was no indication of these.
3429
343025. Added .include_if_exists.
3431
343226. Change 3.952/11 added an explicit directory sync on top of a file sync for
3433 Linux. It turns out that not all file systems support this. Apparently some
3434 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3435 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3436 not supported on the file descriptor, is now ignored when Exim is trying to
3437 sync a directory. This applies only to Linux.
3438
343927. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3440
344128. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3442 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3443 this.
3444
344529. Added support for maildirsize files from supplied patch (modified a bit).
3446
344730. The use of :fail: followed by an empty string could lead Exim to respond to
3448 sender verification failures with (e.g.):
3449
3450 550 Verification failed for <xxx>
3451 550 Sender verify failed
3452
3453 where the first response line was missing the '-' that indicates it is not
3454 the final line of the response.
3455
345631. The loop for finding the name of the user that called Exim had a hardwired
3457 limit of 10; it now uses the value of finduser_retries, which is used for
3458 all other user lookups.
3459
346032. Added $received_count variable, available in data and not_smtp ACLs, and at
3461 delivery time.
3462
346333. Exim was neglecting to zero errno before one call of strtol() when
3464 expanding a string and expecting an integer value. On some systems this
3465 resulted in spurious "integer overflow" errors. Also, it was casting the
3466 result into an int without checking.
3467
346834. Testing for a connection timeout using "timeout_connect" in the retry rules
3469 did not work. The code looks as if it has *never* worked, though it appears
3470 to have been documented since at least releast 1.62. I have made it work.
3471
347235. The "timeout_DNS" error in retry rules, also documented since at least
3473 1.62, also never worked. As it isn't clear exactly what this means, and
3474 clearly it isn't a major issue, I have abolished the feature by treating it
3475 as "timeout", and writing a warning to the main and panic logs.
3476
347736. The display of retry rules for -brt wasn't always showing the error code
3478 correctly.
3479
348037. Added new error conditions to retry rules: timeout_A, timeout_MX,
3481 timeout_connect_A, timeout_connect_MX.
3482
348338. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3484 to the empty sender.
3485
348639. The daemon was not analysing the content of -oX till after it had closed
3487 stderr and disconnected from the controlling terminal. This meant that any
3488 syntax errors were only noted on the panic log, and the return code from
3489 the command was 0. By re-arranging the code a little, I've made the
3490 decoding happen first, so such errors now appear on stderr, and the return
3491 code is 1. However, the actual setting up of the sockets still happens in
3492 the disconnected process, so errors there are still only recorded on the
3493 panic log.
3494
349540. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3496 connections (as happens on some IP stacks) was logged at start up time as
3497 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3498 it from "IPv6 and IPv4", which means that two separate sockets are being
3499 used.
3500
350141. The debug output for gethostbyname2() or getipnodebyname() failures now
3502 says whether AF_INET or AF_INET6 was passed as an argument.
3503
350442. Exiwhat output was messed up when time zones were included in log
3505 timestamps.
3506
350743. Exiwhat now gives more information about the daemon's listening ports,
3508 and whether -tls-on-connect was used.
3509
351044. The "port" option of the smtp transport is now expanded.
3511
351245. A "message" modifier in a "warn" statement in a non-message ACL was being
3513 silently ignored. Now an error message is written to the main and panic
3514 logs.
3515
351646. There's a new ACL modifier called "logwrite" which writes to a log file
3517 as soon as it is encountered.
3518
351947. Added $local_user_uid and $local_user_gid at routing time.
3520
352148. Exim crashed when trying to verify a sender address that was being
3522 rewritten to "<>".
3523
352449. Exim was recognizing only a space character after ".include". It now also
3525 recognizes a tab character.
3526
352750. Fixed several bugs in the Perl script that creates the exim.8 man page by
3528 extracting the relevant information from the specification. The man page no
3529 longer contains scrambled data for the -d option, and I've added a section
3530 at the front about calling Exim under different names.
3531
353251. Added "extra_headers" argument to the "mail" command in filter files.
3533
353452. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3535 crash.
3536
353753. Installed eximstats 1.29.
3538
353954. Added transport_filter_timeout as a generic transport option.
3540
354155. Exim no longer adds an empty Bcc: header to messages that have no To: or
3542 Cc: header lines. This was required by RFC 822, but it not required by RFC
3543 2822.
3544
354556. Exim used to add From:, Date:, and Message-Id: header lines to any
3546 incoming messages that did not have them. Now it does so only if the
3547 message originates locally, that is, if there is no associated remote host
3548 address. When Resent- header lines are present, this applies to the Resent-
3549 lines rather than the non-Resent- lines.
3550
355157. Drop incoming SMTP connection after too many syntax or protocol errors. The
3552 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3553
355458. Messages for configuration errors now include the name of the main
3555 configuration file - useful now that there may be more than one file in a
3556 list (.included file names were always shown).
3557
355859. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3559 for those rare installations that do not start the daemon as root or run it
3560 setuid root. I've cut out the call to initgroups() if the daemon is not
3561 root at that time.
3562
356360. The Exim user and group can now be bound into the binary as text strings
3564 that are looked up at the start of Exim's processing.
3565
356661. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3567
356862. Added $mailstore_basename variable.
3569
357063. Installed patch to sieve.c from Michael Haardt.
3571
357264. When Exim failed to open the panic log after failing to open the main log,
3573 the original message it was trying to log was written to stderr and debug
3574 output, but if they were not available (the usual case in production), it
3575 was lost. Now it is written to syslog before the two lines that record the
3576 failures to open the logs.
3577
357865. Users' Exim filters run in subprocesses under the user's uid. It is
3579 possible for a "deliver" command or an alias in a "personal" command to
3580 provoke an address rewrite. If logging of address rewriting is configured,
3581 this fails because the process is not running as root or exim. There may be
3582 a better way of dealing with this, but for the moment (because 4.30 needs
3583 to be released), I have disabled address rewrite logging when running a
3584 filter in a non-root, non-exim process.
3585
3586
3587Exim version 4.24
3588-----------------
3589
3590 1. The buildconfig auxiliary program wasn't quoting the value set for
3591 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3592 not defined. This bug was masked in 4.22 by the effect that was fixed in
3593 change 4.23/1.
3594
3595 2. Some messages that were rejected after a message id was allocated were
3596 shown as "incomplete" by exigrep. It no longer does this for messages that
3597 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3598
3599 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3600 have allow_domain_literals set, the ID did not get logged in the <= line.
3601 Domain literals are now always recognized in Message-ID: header lines.
3602
3603 4. The first argument for a ${extract expansion item is the key name or field
3604 number. Leading and trailing spaces in this item were not being ignored,
3605 causing some misleading effects.
3606
3607 5. When deliver_drop_privilege was set, single queue runner processes started
3608 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3609 same command in the process it spins off) were not dropping privilege.
3610
3611 6. When the daemon running as "exim" started a queue runner, it always
3612 re-executed Exim in the spun-off process. This is a waste of effort when
3613 deliver_drop_privilege is set. The new process now just calls the
3614 queue-runner function directly.
3615
3616
3617Exim version 4.23
3618-----------------
3619
3620 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3621 HEADERS_CHARSET.
3622
3623 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3624 ignored. Though the use of -oP was forcing the writing of a pid file, it
3625 was always written to the default place.
3626
3627 3. If the message "no IP address found for host xxxx" is generated during
3628 incoming verification, it is now followed by identification of the incoming
3629