Commit | Line | Data |
---|---|---|
495ae4b0 PH |
1 | New Features in Exim |
2 | -------------------- | |
3 | ||
38a0a95f PH |
4 | This file contains descriptions of new features that have been added to Exim. |
5 | Before a formal release, there may be quite a lot of detail so that people can | |
6 | test from the snapshots or the CVS before the documentation is updated. Once | |
7 | the documentation is updated, this file is reduced to a short list. | |
8 | ||
c1e794ba PP |
9 | Version 4.78 |
10 | ------------ | |
11 | ||
12 | 1. New authenticator driver, "gsasl". Server-only (at present). | |
13 | This is a SASL interface, licensed under GPL, which can be found at | |
14 | http://www.gnu.org/software/gsasl/. | |
15 | This system does not provide sources of data for authentication, so | |
16 | careful use needs to be made of the conditions in Exim. Note that | |
17 | this can not yet be used as a drop-in replacement for Cyrus SASL, as | |
18 | Exim is currently unable to construct strings with embedded NULs for | |
19 | use as keys in lookups against sasldb2. | |
20 | ||
97753960 PP |
21 | 2. New authenticator driver, "heimdal_gssapi". Server-only. |
22 | A replacement for using cyrus_sasl with Heimdal, now that $KRB5_KTNAME | |
23 | is no longer honoured for setuid programs by Heimdal. Use the | |
24 | "server_keytab" option to point to the keytab. | |
25 | ||
252e0c7b PP |
26 | 3. The "pkg-config" system can now be used when building Exim to reference |
27 | cflags and library information for lookups and authenticators, rather | |
28 | than having to update "CFLAGS", "AUTH_LIBS", "LOOKUP_INCLUDE" and | |
7e6a8985 PP |
29 | "LOOKUP_LIBS" directly. Similarly for handling the TLS library support |
30 | without adjusting "TLS_INCLUDE" and "TLS_LIBS". | |
252e0c7b | 31 | |
f1e05cc7 | 32 | 4. New expansion variable $tls_bits. |
20aa9dbd | 33 | |
4a6a987a PP |
34 | 5. New lookup type, "dbmjz". Key is an Exim list, the elements of which will |
35 | be joined together with ASCII NUL characters to construct the key to pass | |
36 | into the DBM library. | |
37 | ||
c1e794ba | 38 | |
3ce96ada TF |
39 | Version 4.77 |
40 | ------------ | |
41 | ||
42 | 1. New options for the ratelimit ACL condition: /count= and /unique=. | |
43 | The /noupdate option has been replaced by a /readonly option. | |
44 | ||
061b7ebd PP |
45 | 2. The SMTP transport's protocol option may now be set to "smtps", to |
46 | use SSL-on-connect outbound. | |
47 | ||
9e949f00 PP |
48 | 3. New variable $av_failed, set true if the AV scanner deferred; ie, when |
49 | there is a problem talking to the AV scanner, or the AV scanner running. | |
50 | ||
39257585 PP |
51 | 4. New expansion conditions, "inlist" and "inlisti", which take simple lists |
52 | and check if the search item is a member of the list. This does not | |
53 | support named lists, but does subject the list part to string expansion. | |
54 | ||
55 | 5. Unless the new EXPAND_LISTMATCH_RHS build option is set when Exim was | |
56 | built, Exim no longer performs string expansion on the second string of | |
57 | the match_* expansion conditions: "match_address", "match_domain", | |
58 | "match_ip" & "match_local_part". Named lists can still be used. | |
59 | ||
7c6d71af | 60 | |
e97d1f08 PP |
61 | Version 4.76 |
62 | ------------ | |
63 | ||
64 | 1. The global option "dns_use_edns0" may be set to coerce EDNS0 usage on | |
65 | or off in the resolver library. | |
66 | ||
67 | ||
bc19a55b PP |
68 | Version 4.75 |
69 | ------------ | |
70 | ||
71 | 1. In addition to the existing LDAP and LDAP/SSL ("ldaps") support, there | |
72 | is now LDAP/TLS support, given sufficiently modern OpenLDAP client | |
73 | libraries. The following global options have been added in support of | |
74 | this: ldap_ca_cert_dir, ldap_ca_cert_file, ldap_cert_file, ldap_cert_key, | |
75 | ldap_cipher_suite, ldap_require_cert, ldap_start_tls. | |
76 | ||
2fe76745 PP |
77 | 2. The pipe transport now takes a boolean option, "freeze_signal", default |
78 | false. When true, if the external delivery command exits on a signal then | |
79 | Exim will freeze the message in the queue, instead of generating a bounce. | |
80 | ||
f1e5fef5 PP |
81 | 3. Log filenames may now use %M as an escape, instead of %D (still available). |
82 | The %M pattern expands to yyyymm, providing month-level resolution. | |
83 | ||
332f5cf3 PP |
84 | 4. The $message_linecount variable is now updated for the maildir_tag option, |
85 | in the same way as $message_size, to reflect the real number of lines, | |
86 | including any header additions or removals from transport. | |
87 | ||
29cfeb94 PP |
88 | 5. When contacting a pool of SpamAssassin servers configured in spamd_address, |
89 | Exim now selects entries randomly, to better scale in a cluster setup. | |
90 | ||
bc19a55b | 91 | |
a01ba081 PP |
92 | Version 4.74 |
93 | ------------ | |
94 | ||
1670ef10 PP |
95 | 1. SECURITY FIX: privilege escalation flaw fixed. On Linux (and only Linux) |
96 | the flaw permitted the Exim run-time user to cause root to append to | |
97 | arbitrary files of the attacker's choosing, with the content based | |
98 | on content supplied by the attacker. | |
99 | ||
100 | 2. Exim now supports loading some lookup types at run-time, using your | |
a01ba081 PP |
101 | platform's dlopen() functionality. This has limited platform support |
102 | and the intention is not to support every variant, it's limited to | |
103 | dlopen(). This permits the main Exim binary to not be linked against | |
104 | all the libraries needed for all the lookup types. | |
105 | ||
106 | ||
77bb000f PP |
107 | Version 4.73 |
108 | ------------ | |
109 | ||
2cfd3221 PP |
110 | NOTE: this version is not guaranteed backwards-compatible, please read the |
111 | items below carefully | |
112 | ||
77bb000f PP |
113 | 1. A new main configuration option, "openssl_options", is available if Exim |
114 | is built with SSL support provided by OpenSSL. The option allows | |
115 | administrators to specify OpenSSL options to be used on connections; | |
116 | typically this is to set bug compatibility features which the OpenSSL | |
117 | developers have not enabled by default. There may be security | |
118 | consequences for certain options, so these should not be changed | |
119 | frivolously. | |
120 | ||
a29e5231 PP |
121 | 2. A new pipe transport option, "permit_coredumps", may help with problem |
122 | diagnosis in some scenarios. Note that Exim is typically installed as | |
123 | a setuid binary, which on most OSes will inhibit coredumps by default, | |
43236f35 | 124 | so that safety mechanism would have to be overridden for this option to |
a29e5231 PP |
125 | be able to take effect. |
126 | ||
8544e77a PP |
127 | 3. ClamAV 0.95 is now required for ClamAV support in Exim, unless |
128 | Local/Makefile sets: WITH_OLD_CLAMAV_STREAM=yes | |
129 | Note that this switches Exim to use a new API ("INSTREAM") and a future | |
130 | release of ClamAV will remove support for the old API ("STREAM"). | |
131 | ||
132 | The av_scanner option, when set to "clamd", now takes an optional third | |
133 | part, "local", which causes Exim to pass a filename to ClamAV instead of | |
134 | the file content. This is the same behaviour as when clamd is pointed at | |
135 | a Unix-domain socket. For example: | |
136 | ||
137 | av_scanner = clamd:192.0.2.3 1234:local | |
138 | ||
491fab4c PP |
139 | ClamAV's ExtendedDetectionInfo response format is now handled. |
140 | ||
8544e77a PP |
141 | 4. There is now a -bmalware option, restricted to admin users. This option |
142 | takes one parameter, a filename, and scans that file with Exim's | |
143 | malware-scanning framework. This is intended purely as a debugging aid | |
144 | to ensure that Exim's scanning is working, not to replace other tools. | |
a9622bc6 PP |
145 | Note that the ACL framework is not invoked, so if av_scanner references |
146 | ACL variables without a fallback then this will fail. | |
8544e77a | 147 | |
83e029d5 PP |
148 | 5. There is a new expansion operator, "reverse_ip", which will reverse IP |
149 | addresses; IPv4 into dotted quad, IPv6 into dotted nibble. Examples: | |
150 | ||
151 | ${reverse_ip:192.0.2.4} | |
152 | -> 4.2.0.192 | |
153 | ${reverse_ip:2001:0db8:c42:9:1:abcd:192.0.2.3} | |
154 | -> 3.0.2.0.0.0.0.c.d.c.b.a.1.0.0.0.9.0.0.0.2.4.c.0.8.b.d.0.1.0.0.2 | |
155 | ||
ed7f7860 PP |
156 | 6. There is a new ACL control called "debug", to enable debug logging. |
157 | This allows selective logging of certain incoming transactions within | |
158 | production environments, with some care. It takes two options, "tag" | |
159 | and "opts"; "tag" is included in the filename of the log and "opts" | |
160 | is used as per the -d<options> command-line option. Examples, which | |
161 | don't all make sense in all contexts: | |
162 | ||
163 | control = debug | |
164 | control = debug/tag=.$sender_host_address | |
165 | control = debug/opts=+expand+acl | |
166 | control = debug/tag=.$message_exim_id/opts=+expand | |
167 | ||
10385c15 PP |
168 | 7. It has always been implicit in the design and the documentation that |
169 | "the Exim user" is not root. src/EDITME said that using root was | |
170 | "very strongly discouraged". This is not enough to keep people from | |
171 | shooting themselves in the foot in days when many don't configure Exim | |
172 | themselves but via package build managers. The security consequences of | |
173 | running various bits of network code are severe if there should be bugs in | |
174 | them. As such, the Exim user may no longer be root. If configured | |
175 | statically, Exim will refuse to build. If configured as ref:user then Exim | |
176 | will exit shortly after start-up. If you must shoot yourself in the foot, | |
177 | then henceforth you will have to maintain your own local patches to strip | |
178 | the safeties off. | |
179 | ||
6a8de854 PP |
180 | 8. There is a new expansion operator, bool_lax{}. Where bool{} uses the ACL |
181 | condition logic to determine truth/failure and will fail to expand many | |
182 | strings, bool_lax{} uses the router condition logic, where most strings | |
183 | do evaluate true. | |
184 | Note: bool{00} is false, bool_lax{00} is true. | |
185 | ||
186 | 9. Routers now support multiple "condition" tests, | |
532be449 | 187 | |
5dc43717 JJ |
188 | 10. There is now a runtime configuration option "tcp_wrappers_daemon_name". |
189 | Setting this allows an admin to define which entry in the tcpwrappers | |
190 | config file will be used to control access to the daemon. This option | |
191 | is only available when Exim is built with USE_TCP_WRAPPERS. The | |
192 | default value is set at build time using the TCP_WRAPPERS_DAEMON_NAME | |
193 | build option. | |
194 | ||
79d4bc3d PP |
195 | 11. [POSSIBLE CONFIG BREAKAGE] The default value for system_filter_user is now |
196 | the Exim run-time user, instead of root. | |
197 | ||
2cfd3221 PP |
198 | 12. [POSSIBLE CONFIG BREAKAGE] ALT_CONFIG_ROOT_ONLY is no longer optional and |
199 | is forced on. This is mitigated by the new build option | |
90b6341f | 200 | TRUSTED_CONFIG_LIST which defines a list of configuration files which |
7f7f0545 DW |
201 | are trusted; one per line. If a config file is owned by root and matches |
202 | a pathname in the list, then it may be invoked by the Exim build-time | |
203 | user without Exim relinquishing root privileges. | |
2cfd3221 PP |
204 | |
205 | 13. [POSSIBLE CONFIG BREAKAGE] The Exim user is no longer automatically | |
206 | trusted to supply -D<Macro[=Value]> overrides on the command-line. Going | |
90b6341f DW |
207 | forward, we recommend using TRUSTED_CONFIG_LIST with shim configs that |
208 | include the main config. As a transition mechanism, we are temporarily | |
209 | providing a work-around: the new build option WHITELIST_D_MACROS provides | |
43236f35 | 210 | a colon-separated list of macro names which may be overridden by the Exim |
90b6341f DW |
211 | run-time user. The values of these macros are constrained to the regex |
212 | ^[A-Za-z0-9_/.-]*$ (which explicitly does allow for empty values). | |
2cfd3221 | 213 | |
77bb000f | 214 | |
3fc596e4 NM |
215 | Version 4.72 |
216 | ------------ | |
217 | ||
b26eacf1 PP |
218 | 1. TWO SECURITY FIXES: one relating to mail-spools which are globally |
219 | writable, the other to locking of MBX folders (not mbox). | |
220 | ||
221 | 2. MySQL stored procedures are now supported. | |
222 | ||
223 | 3. The dkim_domain transport option is now a list, not a single string, and | |
224 | messages will be signed for each element in the list (discarding | |
225 | duplicates). | |
226 | ||
227 | 4. The 4.70 release unexpectedly changed the behaviour of dnsdb TXT lookups | |
228 | in the presence of multiple character strings within the RR. Prior to 4.70, | |
229 | only the first string would be returned. The dnsdb lookup now, by default, | |
230 | preserves the pre-4.70 semantics, but also now takes an extended output | |
8f425947 PP |
231 | separator specification. The separator can be followed by a semicolon, to |
232 | concatenate the individual text strings together with no join character, | |
233 | or by a comma and a second separator character, in which case the text | |
234 | strings within a TXT record are joined on that second character. | |
235 | Administrators are reminded that DNS provides no ordering guarantees | |
236 | between multiple records in an RRset. For example: | |
b26eacf1 PP |
237 | |
238 | foo.example. IN TXT "a" "b" "c" | |
239 | foo.example. IN TXT "d" "e" "f" | |
240 | ||
241 | ${lookup dnsdb{>/ txt=foo.example}} -> "a/d" | |
242 | ${lookup dnsdb{>/; txt=foo.example}} -> "def/abc" | |
8f425947 | 243 | ${lookup dnsdb{>/,+ txt=foo.example}} -> "a+b+c/d+e+f" |
b26eacf1 | 244 | |
3fc596e4 | 245 | |
f33253cc NM |
246 | Version 4.70 / 4.71 |
247 | ------------------- | |
65a7d8c3 | 248 | |
7c6d71af | 249 | 1. Native DKIM support without an external library. |
a8c8d6b5 JJ |
250 | (Note that if no action to prevent it is taken, a straight upgrade will |
251 | result in DKIM verification of all signed incoming emails. See spec | |
252 | for details on conditionally disabling) | |
7c6d71af NM |
253 | |
254 | 2. Experimental DCC support via dccifd (contributed by Wolfgang Breyha). | |
65a7d8c3 | 255 | |
f33253cc | 256 | 3. There is now a bool{} expansion condition which maps certain strings to |
7d9f747b | 257 | true/false condition values (most likely of use in conjunction with the |
f33253cc NM |
258 | and{} expansion operator). |
259 | ||
260 | 4. The $spam_score, $spam_bar and $spam_report variables are now available | |
261 | at delivery time. | |
262 | ||
263 | 5. exim -bP now supports "macros", "macro_list" or "macro MACRO_NAME" as | |
264 | options, provided that Exim is invoked by an admin_user. | |
265 | ||
266 | 6. There is a new option gnutls_compat_mode, when linked against GnuTLS, | |
267 | which increases compatibility with older clients at the cost of decreased | |
268 | security. Don't set this unless you need to support such clients. | |
269 | ||
270 | 7. There is a new expansion operator, ${randint:...} which will produce a | |
271 | "random" number less than the supplied integer. This randomness is | |
272 | not guaranteed to be cryptographically strong, but depending upon how | |
273 | Exim was built may be better than the most naive schemes. | |
274 | ||
275 | 8. Exim now explicitly ensures that SHA256 is available when linked against | |
276 | OpenSSL. | |
277 | ||
278 | 9. The transport_filter_timeout option now applies to SMTP transports too. | |
279 | ||
65a7d8c3 | 280 | |
7d9f747b PP |
281 | Version 4.69 |
282 | ------------ | |
283 | ||
284 | 1. Preliminary DKIM support in Experimental. | |
285 | ||
286 | ||
2b85bce7 PH |
287 | Version 4.68 |
288 | ------------ | |
289 | ||
290 | 1. The body_linecount and body_zerocount C variables are now exported in the | |
291 | local_scan API. | |
292 | ||
93655c46 PH |
293 | 2. When a dnslists lookup succeeds, the key that was looked up is now placed |
294 | in $dnslist_matched. When the key is an IP address, it is not reversed in | |
295 | this variable (though it is, of course, in the actual lookup). In simple | |
296 | cases, for example: | |
297 | ||
298 | deny dnslists = spamhaus.example | |
299 | ||
300 | the key is also available in another variable (in this case, | |
301 | $sender_host_address). In more complicated cases, however, this is not | |
302 | true. For example, using a data lookup might generate a dnslists lookup | |
303 | like this: | |
304 | ||
305 | deny dnslists = spamhaus.example/<|192.168.1.2|192.168.6.7|... | |
306 | ||
307 | If this condition succeeds, the value in $dnslist_matched might be | |
308 | 192.168.6.7 (for example). | |
309 | ||
6c512171 PH |
310 | 3. Authenticators now have a client_condition option. When Exim is running as |
311 | a client, it skips an authenticator whose client_condition expansion yields | |
312 | "0", "no", or "false". This can be used, for example, to skip plain text | |
313 | authenticators when the connection is not encrypted by a setting such as: | |
314 | ||
315 | client_condition = ${if !eq{$tls_cipher}{}} | |
316 | ||
317 | Note that the 4.67 documentation states that $tls_cipher contains the | |
318 | cipher used for incoming messages. In fact, during SMTP delivery, it | |
319 | contains the cipher used for the delivery. The same is true for | |
320 | $tls_peerdn. | |
321 | ||
a96603a0 PH |
322 | 4. There is now a -Mvc <message-id> option, which outputs a copy of the |
323 | message to the standard output, in RFC 2822 format. The option can be used | |
324 | only by an admin user. | |
325 | ||
8f240103 PH |
326 | 5. There is now a /noupdate option for the ratelimit ACL condition. It |
327 | computes the rate and checks the limit as normal, but it does not update | |
328 | the saved data. This means that, in relevant ACLs, it is possible to lookup | |
329 | the existence of a specified (or auto-generated) ratelimit key without | |
330 | incrementing the ratelimit counter for that key. | |
331 | ||
332 | In order for this to be useful, another ACL entry must set the rate | |
333 | for the same key somewhere (otherwise it will always be zero). | |
334 | ||
335 | Example: | |
336 | ||
337 | acl_check_connect: | |
338 | # Read the rate; if it doesn't exist or is below the maximum | |
339 | # we update it below | |
340 | deny ratelimit = 100 / 5m / strict / noupdate | |
341 | log_message = RATE: $sender_rate / $sender_rate_period \ | |
342 | (max $sender_rate_limit) | |
343 | ||
344 | [... some other logic and tests...] | |
345 | ||
346 | warn ratelimit = 100 / 5m / strict / per_cmd | |
347 | log_message = RATE UPDATE: $sender_rate / $sender_rate_period \ | |
348 | (max $sender_rate_limit) | |
349 | condition = ${if le{$sender_rate}{$sender_rate_limit}} | |
350 | ||
351 | accept | |
352 | ||
d677b2f2 PH |
353 | 6. The variable $max_received_linelength contains the number of bytes in the |
354 | longest line that was received as part of the message, not counting the | |
355 | line termination character(s). | |
356 | ||
d52120f2 PH |
357 | 7. Host lists can now include +ignore_defer and +include_defer, analagous to |
358 | +ignore_unknown and +include_unknown. These options should be used with | |
359 | care, probably only in non-critical host lists such as whitelists. | |
360 | ||
8669f003 PH |
361 | 8. There's a new option called queue_only_load_latch, which defaults true. |
362 | If set false when queue_only_load is greater than zero, Exim re-evaluates | |
363 | the load for each incoming message in an SMTP session. Otherwise, once one | |
364 | message is queued, the remainder are also. | |
365 | ||
4f054c63 | 366 | 9. There is a new ACL, specified by acl_smtp_notquit, which is run in most |
8f128379 PH |
367 | cases when an SMTP session ends without sending QUIT. However, when Exim |
368 | itself is is bad trouble, such as being unable to write to its log files, | |
369 | this ACL is not run, because it might try to do things (such as write to | |
370 | log files) that make the situation even worse. | |
371 | ||
372 | Like the QUIT ACL, this new ACL is provided to make it possible to gather | |
373 | statistics. Whatever it returns (accept or deny) is immaterial. The "delay" | |
374 | modifier is forbidden in this ACL. | |
375 | ||
376 | When the NOTQUIT ACL is running, the variable $smtp_notquit_reason is set | |
377 | to a string that indicates the reason for the termination of the SMTP | |
378 | connection. The possible values are: | |
379 | ||
380 | acl-drop Another ACL issued a "drop" command | |
381 | bad-commands Too many unknown or non-mail commands | |
382 | command-timeout Timeout while reading SMTP commands | |
383 | connection-lost The SMTP connection has been lost | |
384 | data-timeout Timeout while reading message data | |
385 | local-scan-error The local_scan() function crashed | |
386 | local-scan-timeout The local_scan() function timed out | |
387 | signal-exit SIGTERM or SIGINT | |
388 | synchronization-error SMTP synchronization error | |
389 | tls-failed TLS failed to start | |
390 | ||
391 | In most cases when an SMTP connection is closed without having received | |
392 | QUIT, Exim sends an SMTP response message before actually closing the | |
393 | connection. With the exception of acl-drop, the default message can be | |
394 | overridden by the "message" modifier in the NOTQUIT ACL. In the case of a | |
395 | "drop" verb in another ACL, it is the message from the other ACL that is | |
396 | used. | |
397 | ||
b7670459 PH |
398 | 10. For MySQL and PostgreSQL lookups, it is now possible to specify a list of |
399 | servers with individual queries. This is done by starting the query with | |
400 | "servers=x:y:z;", where each item in the list may take one of two forms: | |
401 | ||
402 | (1) If it is just a host name, the appropriate global option (mysql_servers | |
403 | or pgsql_servers) is searched for a host of the same name, and the | |
404 | remaining parameters (database, user, password) are taken from there. | |
405 | ||
406 | (2) If it contains any slashes, it is taken as a complete parameter set. | |
407 | ||
408 | The list of servers is used in exactly the same was as the global list. | |
409 | Once a connection to a server has happened and a query has been | |
410 | successfully executed, processing of the lookup ceases. | |
411 | ||
412 | This feature is intended for use in master/slave situations where updates | |
413 | are occurring, and one wants to update a master rather than a slave. If the | |
414 | masters are in the list for reading, you might have: | |
415 | ||
416 | mysql_servers = slave1/db/name/pw:slave2/db/name/pw:master/db/name/pw | |
417 | ||
418 | In an updating lookup, you could then write | |
419 | ||
420 | ${lookup mysql{servers=master; UPDATE ...} | |
421 | ||
422 | If, on the other hand, the master is not to be used for reading lookups: | |
423 | ||
424 | pgsql_servers = slave1/db/name/pw:slave2/db/name/pw | |
425 | ||
426 | you can still update the master by | |
427 | ||
428 | ${lookup pgsql{servers=master/db/name/pw; UPDATE ...} | |
429 | ||
ddea74fa PH |
430 | 11. The message_body_newlines option (default FALSE, for backwards |
431 | compatibility) can be used to control whether newlines are present in | |
432 | $message_body and $message_body_end. If it is FALSE, they are replaced by | |
433 | spaces. | |
434 | ||
2b85bce7 | 435 | |
b4ed4da0 PH |
436 | Version 4.67 |
437 | ------------ | |
438 | ||
439 | 1. There is a new log selector called smtp_no_mail, which is not included in | |
440 | the default setting. When it is set, a line is written to the main log | |
441 | whenever an accepted SMTP connection terminates without having issued a | |
4aa45c31 | 442 | MAIL command. |
b4ed4da0 | 443 | |
431b7361 | 444 | 2. When an item in a dnslists list is followed by = and & and a list of IP |
4aa45c31 PH |
445 | addresses, the behaviour was not clear when the lookup returned more than |
446 | one IP address. This has been solved by the addition of == and =& for "all" | |
93655c46 | 447 | rather than the default "any" matching. |
431b7361 | 448 | |
4aa45c31 PH |
449 | 3. Up till now, the only control over which cipher suites GnuTLS uses has been |
450 | for the cipher algorithms. New options have been added to allow some of the | |
451 | other parameters to be varied. | |
431b7361 | 452 | |
4aa45c31 PH |
453 | 4. There is a new compile-time option called ENABLE_DISABLE_FSYNC. When it is |
454 | set, Exim compiles a runtime option called disable_fsync. | |
431b7361 | 455 | |
4aa45c31 | 456 | 5. There is a new variable called $smtp_count_at_connection_start. |
431b7361 | 457 | |
4aa45c31 | 458 | 6. There's a new control called no_pipelining. |
cf8b11a5 | 459 | |
41c7c167 | 460 | 7. There are two new variables called $sending_ip_address and $sending_port. |
4aa45c31 | 461 | These are set whenever an SMTP connection to another host has been set up. |
41c7c167 PH |
462 | |
463 | 8. The expansion of the helo_data option in the smtp transport now happens | |
4aa45c31 | 464 | after the connection to the server has been made. |
41c7c167 | 465 | |
9c57cbc0 | 466 | 9. There is a new expansion operator ${rfc2047d: that decodes strings that |
4aa45c31 | 467 | are encoded as per RFC 2047. |
9c57cbc0 | 468 | |
f3f065bb PH |
469 | 10. There is a new log selector called "pid", which causes the current process |
470 | id to be added to every log line, in square brackets, immediately after the | |
471 | time and date. | |
472 | ||
047bdd8c | 473 | 11. Exim has been modified so that it flushes SMTP output before implementing |
4c590bd1 PH |
474 | a delay in an ACL. It also flushes the output before performing a callout, |
475 | as this can take a substantial time. These behaviours can be disabled by | |
476 | obeying control = no_delay_flush or control = no_callout_flush, | |
4aa45c31 | 477 | respectively, at some earlier stage of the connection. |
047bdd8c | 478 | |
0ce9abe6 | 479 | 12. There are two new expansion conditions that iterate over a list. They are |
4aa45c31 | 480 | called forany and forall. |
0ce9abe6 | 481 | |
0e22dfd1 PH |
482 | 13. There's a new global option called dsn_from that can be used to vary the |
483 | contents of From: lines in bounces and other automatically generated | |
484 | messages ("delivery status notifications" - hence the name of the option). | |
0e22dfd1 | 485 | |
4aa45c31 | 486 | 14. The smtp transport has a new option called hosts_avoid_pipelining. |
c51b8e75 | 487 | |
75b1493f | 488 | 15. By default, exigrep does case-insensitive matches. There is now a -I option |
4aa45c31 | 489 | that makes it case-sensitive. |
29f89cad | 490 | |
4aa45c31 PH |
491 | 16. A number of new features ("addresses", "map", "filter", and "reduce") have |
492 | been added to string expansions to make it easier to process lists of | |
493 | items, typically addresses. | |
29f89cad | 494 | |
c3611384 PH |
495 | 17. There's a new ACL modifier called "continue". It does nothing of itself, |
496 | and processing of the ACL always continues with the next condition or | |
497 | modifier. It is provided so that the side effects of expanding its argument | |
4aa45c31 | 498 | can be used. |
c3611384 | 499 | |
ec95d1a6 | 500 | 18. It is now possible to use newline and other control characters (those with |
4aa45c31 | 501 | values less than 32, plus DEL) as separators in lists. |
ec95d1a6 | 502 | |
b2d5182b PH |
503 | 19. The exigrep utility now has a -v option, which inverts the matching |
504 | condition. | |
505 | ||
c456d9bb | 506 | 20. The host_find_failed option in the manualroute router can now be set to |
4aa45c31 | 507 | "ignore". |
c456d9bb | 508 | |
b4ed4da0 PH |
509 | |
510 | Version 4.66 | |
511 | ------------ | |
512 | ||
513 | No new features were added to 4.66. | |
514 | ||
515 | ||
516 | Version 4.65 | |
517 | ------------ | |
518 | ||
519 | No new features were added to 4.65. | |
520 | ||
38a0a95f PH |
521 | |
522 | Version 4.64 | |
523 | ------------ | |
524 | ||
af561417 PH |
525 | 1. ACL variables can now be given arbitrary names, as long as they start with |
526 | "acl_c" or "acl_m" (for connection variables and message variables), are at | |
527 | least six characters long, with the sixth character being either a digit or | |
883335dc | 528 | an underscore. |
af561417 PH |
529 | |
530 | 2. There is a new ACL modifier called log_reject_target. It makes it possible | |
883335dc | 531 | to specify which logs are used for messages about ACL rejections. |
af561417 PH |
532 | |
533 | 3. There is a new authenticator called "dovecot". This is an interface to the | |
534 | authentication facility of the Dovecot POP/IMAP server, which can support a | |
883335dc | 535 | number of authentication methods. |
af561417 PH |
536 | |
537 | 4. The variable $message_headers_raw provides a concatenation of all the | |
538 | messages's headers without any decoding. This is in contrast to | |
539 | $message_headers, which does RFC2047 decoding on the header contents. | |
540 | ||
883335dc PH |
541 | 5. In a DNS black list, if two domain names, comma-separated, are given, the |
542 | second is used first to do an initial check, making use of any IP value | |
543 | restrictions that are set. If there is a match, the first domain is used, | |
544 | without any IP value restrictions, to get the TXT record. | |
af561417 | 545 | |
883335dc | 546 | 6. All authenticators now have a server_condition option. |
af561417 PH |
547 | |
548 | 7. There is a new command-line option called -Mset. It is useful only in | |
549 | conjunction with -be (that is, when testing string expansions). It must be | |
550 | followed by a message id; Exim loads the given message from its spool | |
883335dc | 551 | before doing the expansions. |
af561417 PH |
552 | |
553 | 8. Another similar new command-line option is called -bem. It operates like | |
883335dc PH |
554 | -be except that it must be followed by the name of a file that contains a |
555 | message. | |
af561417 PH |
556 | |
557 | 9. When an address is delayed because of a 4xx response to a RCPT command, it | |
558 | is now the combination of sender and recipient that is delayed in | |
883335dc | 559 | subsequent queue runs until its retry time is reached. |
af561417 PH |
560 | |
561 | 10. Unary negation and the bitwise logical operators and, or, xor, not, and | |
883335dc | 562 | shift, have been added to the eval: and eval10: expansion items. |
48c7f9e2 | 563 | |
194cc0e4 PH |
564 | 11. The variables $interface_address and $interface_port have been renamed |
565 | as $received_ip_address and $received_port, to make it clear that they | |
566 | relate to message reception rather than delivery. (The old names remain | |
567 | available for compatibility.) | |
568 | ||
883335dc PH |
569 | 12. The "message" modifier can now be used on "accept" and "discard" acl verbs |
570 | to vary the message that is sent when an SMTP command is accepted. | |
4e88a19f | 571 | |
495ae4b0 | 572 | |
4608d683 PH |
573 | Version 4.63 |
574 | ------------ | |
575 | ||
576 | 1. There is a new Boolean option called filter_prepend_home for the redirect | |
38a0a95f | 577 | router. |
4608d683 | 578 | |
45b91596 PH |
579 | 2. There is a new acl, set by acl_not_smtp_start, which is run right at the |
580 | start of receiving a non-SMTP message, before any of the message has been | |
38a0a95f | 581 | read. |
45b91596 | 582 | |
a5bd321b PH |
583 | 3. When an SMTP error message is specified in a "message" modifier in an ACL, |
584 | or in a :fail: or :defer: message in a redirect router, Exim now checks the | |
38a0a95f | 585 | start of the message for an SMTP error code. |
a5bd321b | 586 | |
6ec97b1b | 587 | 4. There is a new parameter for LDAP lookups called "referrals", which takes |
38a0a95f | 588 | one of the settings "follow" (the default) or "nofollow". |
6ec97b1b | 589 | |
e22ca4ac JJ |
590 | 5. Version 20070721.2 of exipick now included, offering these new options: |
591 | --reverse | |
592 | After all other sorting options have bee processed, reverse order | |
593 | before displaying messages (-R is synonym). | |
594 | --random | |
595 | Randomize order of matching messages before displaying. | |
596 | --size | |
597 | Instead of displaying the matching messages, display the sum | |
598 | of their sizes. | |
599 | --sort <variable>[,<variable>...] | |
600 | Before displaying matching messages, sort the messages according to | |
601 | each messages value for each variable. | |
602 | --not | |
603 | Negate the value for every test (returns inverse output from the | |
604 | same criteria without --not). | |
605 | ||
4608d683 | 606 | |
1cce3af8 PH |
607 | Version 4.62 |
608 | ------------ | |
609 | ||
610 | 1. The ${readsocket expansion item now supports Internet domain sockets as well | |
611 | as Unix domain sockets. If the first argument begins "inet:", it must be of | |
612 | the form "inet:host:port". The port is mandatory; it may be a number or the | |
613 | name of a TCP port in /etc/services. The host may be a name, or it may be an | |
614 | IP address. An ip address may optionally be enclosed in square brackets. | |
615 | This is best for IPv6 addresses. For example: | |
616 | ||
617 | ${readsocket{inet:[::1]:1234}{<request data>}... | |
618 | ||
619 | Only a single host name may be given, but if looking it up yield more than | |
620 | one IP address, they are each tried in turn until a connection is made. Once | |
621 | a connection has been made, the behaviour is as for ${readsocket with a Unix | |
622 | domain socket. | |
623 | ||
f7fd3850 PH |
624 | 2. If a redirect router sets up file or pipe deliveries for more than one |
625 | incoming address, and the relevant transport has batch_max set greater than | |
626 | one, a batch delivery now occurs. | |
627 | ||
d6629cdc PH |
628 | 3. The appendfile transport has a new option called maildirfolder_create_regex. |
629 | Its value is a regular expression. For a maildir delivery, this is matched | |
630 | against the maildir directory; if it matches, Exim ensures that a | |
631 | maildirfolder file is created alongside the new, cur, and tmp directories. | |
632 | ||
1cce3af8 | 633 | |
7e66e54d PH |
634 | Version 4.61 |
635 | ------------ | |
636 | ||
4f578862 PH |
637 | The documentation is up-to-date for the 4.61 release. Major new features since |
638 | the 4.60 release are: | |
639 | ||
640 | . An option called disable_ipv6, to disable the use of IPv6 completely. | |
641 | ||
642 | . An increase in the number of ACL variables to 20 of each type. | |
643 | ||
644 | . A change to use $auth1, $auth2, and $auth3 in authenticators instead of $1, | |
645 | $2, $3, (though those are still set) because the numeric variables get used | |
646 | for other things in complicated expansions. | |
647 | ||
843a41e8 | 648 | . The default for rfc1413_query_timeout has been changed from 30s to 5s. |
4f578862 PH |
649 | |
650 | . It is possible to use setclassresources() on some BSD OS to control the | |
651 | resources used in pipe deliveries. | |
652 | ||
653 | . A new ACL modifier called add_header, which can be used with any verb. | |
654 | ||
655 | . More errors are detectable in retry rules. | |
656 | ||
657 | There are a number of other additions too. | |
71fafd95 | 658 | |
7e66e54d | 659 | |
425ae40f | 660 | Version 4.60 |
b5aea5e1 PH |
661 | ------------ |
662 | ||
425ae40f PH |
663 | The documentation is up-to-date for the 4.60 release. Major new features since |
664 | the 4.50 release are: | |
1a46a8c5 | 665 | |
425ae40f | 666 | . Support for SQLite. |
1a46a8c5 | 667 | |
425ae40f | 668 | . Support for IGNOREQUOTA in LMTP. |
1a46a8c5 | 669 | |
425ae40f | 670 | . Extensions to the "submission mode" features. |
1a46a8c5 | 671 | |
425ae40f | 672 | . Support for Client SMTP Authorization (CSA). |
1a46a8c5 | 673 | |
425ae40f | 674 | . Support for ratelimiting hosts and users. |
b5aea5e1 | 675 | |
425ae40f | 676 | . New expansion items to help with the BATV "prvs" scheme. |
b5aea5e1 | 677 | |
425ae40f | 678 | . A "match_ip" condition, that matches an IP address against a list. |
35edf2ff | 679 | |
425ae40f | 680 | There are many more minor changes. |
495ae4b0 PH |
681 | |
682 | **** |