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a96603a0 | 1 | $Cambridge: exim/doc/doc-txt/NewStuff,v 1.150 2007/06/19 14:41:31 ph10 Exp $ |
495ae4b0 PH |
2 | |
3 | New Features in Exim | |
4 | -------------------- | |
5 | ||
38a0a95f PH |
6 | This file contains descriptions of new features that have been added to Exim. |
7 | Before a formal release, there may be quite a lot of detail so that people can | |
8 | test from the snapshots or the CVS before the documentation is updated. Once | |
9 | the documentation is updated, this file is reduced to a short list. | |
10 | ||
2b85bce7 PH |
11 | Version 4.68 |
12 | ------------ | |
13 | ||
14 | 1. The body_linecount and body_zerocount C variables are now exported in the | |
15 | local_scan API. | |
16 | ||
93655c46 PH |
17 | 2. When a dnslists lookup succeeds, the key that was looked up is now placed |
18 | in $dnslist_matched. When the key is an IP address, it is not reversed in | |
19 | this variable (though it is, of course, in the actual lookup). In simple | |
20 | cases, for example: | |
21 | ||
22 | deny dnslists = spamhaus.example | |
23 | ||
24 | the key is also available in another variable (in this case, | |
25 | $sender_host_address). In more complicated cases, however, this is not | |
26 | true. For example, using a data lookup might generate a dnslists lookup | |
27 | like this: | |
28 | ||
29 | deny dnslists = spamhaus.example/<|192.168.1.2|192.168.6.7|... | |
30 | ||
31 | If this condition succeeds, the value in $dnslist_matched might be | |
32 | 192.168.6.7 (for example). | |
33 | ||
6c512171 PH |
34 | 3. Authenticators now have a client_condition option. When Exim is running as |
35 | a client, it skips an authenticator whose client_condition expansion yields | |
36 | "0", "no", or "false". This can be used, for example, to skip plain text | |
37 | authenticators when the connection is not encrypted by a setting such as: | |
38 | ||
39 | client_condition = ${if !eq{$tls_cipher}{}} | |
40 | ||
41 | Note that the 4.67 documentation states that $tls_cipher contains the | |
42 | cipher used for incoming messages. In fact, during SMTP delivery, it | |
43 | contains the cipher used for the delivery. The same is true for | |
44 | $tls_peerdn. | |
45 | ||
a96603a0 PH |
46 | 4. There is now a -Mvc <message-id> option, which outputs a copy of the |
47 | message to the standard output, in RFC 2822 format. The option can be used | |
48 | only by an admin user. | |
49 | ||
2b85bce7 | 50 | |
b4ed4da0 PH |
51 | Version 4.67 |
52 | ------------ | |
53 | ||
54 | 1. There is a new log selector called smtp_no_mail, which is not included in | |
55 | the default setting. When it is set, a line is written to the main log | |
56 | whenever an accepted SMTP connection terminates without having issued a | |
4aa45c31 | 57 | MAIL command. |
b4ed4da0 | 58 | |
431b7361 | 59 | 2. When an item in a dnslists list is followed by = and & and a list of IP |
4aa45c31 PH |
60 | addresses, the behaviour was not clear when the lookup returned more than |
61 | one IP address. This has been solved by the addition of == and =& for "all" | |
93655c46 | 62 | rather than the default "any" matching. |
431b7361 | 63 | |
4aa45c31 PH |
64 | 3. Up till now, the only control over which cipher suites GnuTLS uses has been |
65 | for the cipher algorithms. New options have been added to allow some of the | |
66 | other parameters to be varied. | |
431b7361 | 67 | |
4aa45c31 PH |
68 | 4. There is a new compile-time option called ENABLE_DISABLE_FSYNC. When it is |
69 | set, Exim compiles a runtime option called disable_fsync. | |
431b7361 | 70 | |
4aa45c31 | 71 | 5. There is a new variable called $smtp_count_at_connection_start. |
431b7361 | 72 | |
4aa45c31 | 73 | 6. There's a new control called no_pipelining. |
cf8b11a5 | 74 | |
41c7c167 | 75 | 7. There are two new variables called $sending_ip_address and $sending_port. |
4aa45c31 | 76 | These are set whenever an SMTP connection to another host has been set up. |
41c7c167 PH |
77 | |
78 | 8. The expansion of the helo_data option in the smtp transport now happens | |
4aa45c31 | 79 | after the connection to the server has been made. |
41c7c167 | 80 | |
9c57cbc0 | 81 | 9. There is a new expansion operator ${rfc2047d: that decodes strings that |
4aa45c31 | 82 | are encoded as per RFC 2047. |
9c57cbc0 | 83 | |
f3f065bb PH |
84 | 10. There is a new log selector called "pid", which causes the current process |
85 | id to be added to every log line, in square brackets, immediately after the | |
86 | time and date. | |
87 | ||
047bdd8c | 88 | 11. Exim has been modified so that it flushes SMTP output before implementing |
4c590bd1 PH |
89 | a delay in an ACL. It also flushes the output before performing a callout, |
90 | as this can take a substantial time. These behaviours can be disabled by | |
91 | obeying control = no_delay_flush or control = no_callout_flush, | |
4aa45c31 | 92 | respectively, at some earlier stage of the connection. |
047bdd8c | 93 | |
0ce9abe6 | 94 | 12. There are two new expansion conditions that iterate over a list. They are |
4aa45c31 | 95 | called forany and forall. |
0ce9abe6 | 96 | |
0e22dfd1 PH |
97 | 13. There's a new global option called dsn_from that can be used to vary the |
98 | contents of From: lines in bounces and other automatically generated | |
99 | messages ("delivery status notifications" - hence the name of the option). | |
0e22dfd1 | 100 | |
4aa45c31 | 101 | 14. The smtp transport has a new option called hosts_avoid_pipelining. |
c51b8e75 | 102 | |
75b1493f | 103 | 15. By default, exigrep does case-insensitive matches. There is now a -I option |
4aa45c31 | 104 | that makes it case-sensitive. |
29f89cad | 105 | |
4aa45c31 PH |
106 | 16. A number of new features ("addresses", "map", "filter", and "reduce") have |
107 | been added to string expansions to make it easier to process lists of | |
108 | items, typically addresses. | |
29f89cad | 109 | |
c3611384 PH |
110 | 17. There's a new ACL modifier called "continue". It does nothing of itself, |
111 | and processing of the ACL always continues with the next condition or | |
112 | modifier. It is provided so that the side effects of expanding its argument | |
4aa45c31 | 113 | can be used. |
c3611384 | 114 | |
ec95d1a6 | 115 | 18. It is now possible to use newline and other control characters (those with |
4aa45c31 | 116 | values less than 32, plus DEL) as separators in lists. |
ec95d1a6 | 117 | |
b2d5182b PH |
118 | 19. The exigrep utility now has a -v option, which inverts the matching |
119 | condition. | |
120 | ||
c456d9bb | 121 | 20. The host_find_failed option in the manualroute router can now be set to |
4aa45c31 | 122 | "ignore". |
c456d9bb | 123 | |
b4ed4da0 PH |
124 | |
125 | Version 4.66 | |
126 | ------------ | |
127 | ||
128 | No new features were added to 4.66. | |
129 | ||
130 | ||
131 | Version 4.65 | |
132 | ------------ | |
133 | ||
134 | No new features were added to 4.65. | |
135 | ||
38a0a95f PH |
136 | |
137 | Version 4.64 | |
138 | ------------ | |
139 | ||
af561417 PH |
140 | 1. ACL variables can now be given arbitrary names, as long as they start with |
141 | "acl_c" or "acl_m" (for connection variables and message variables), are at | |
142 | least six characters long, with the sixth character being either a digit or | |
883335dc | 143 | an underscore. |
af561417 PH |
144 | |
145 | 2. There is a new ACL modifier called log_reject_target. It makes it possible | |
883335dc | 146 | to specify which logs are used for messages about ACL rejections. |
af561417 PH |
147 | |
148 | 3. There is a new authenticator called "dovecot". This is an interface to the | |
149 | authentication facility of the Dovecot POP/IMAP server, which can support a | |
883335dc | 150 | number of authentication methods. |
af561417 PH |
151 | |
152 | 4. The variable $message_headers_raw provides a concatenation of all the | |
153 | messages's headers without any decoding. This is in contrast to | |
154 | $message_headers, which does RFC2047 decoding on the header contents. | |
155 | ||
883335dc PH |
156 | 5. In a DNS black list, if two domain names, comma-separated, are given, the |
157 | second is used first to do an initial check, making use of any IP value | |
158 | restrictions that are set. If there is a match, the first domain is used, | |
159 | without any IP value restrictions, to get the TXT record. | |
af561417 | 160 | |
883335dc | 161 | 6. All authenticators now have a server_condition option. |
af561417 PH |
162 | |
163 | 7. There is a new command-line option called -Mset. It is useful only in | |
164 | conjunction with -be (that is, when testing string expansions). It must be | |
165 | followed by a message id; Exim loads the given message from its spool | |
883335dc | 166 | before doing the expansions. |
af561417 PH |
167 | |
168 | 8. Another similar new command-line option is called -bem. It operates like | |
883335dc PH |
169 | -be except that it must be followed by the name of a file that contains a |
170 | message. | |
af561417 PH |
171 | |
172 | 9. When an address is delayed because of a 4xx response to a RCPT command, it | |
173 | is now the combination of sender and recipient that is delayed in | |
883335dc | 174 | subsequent queue runs until its retry time is reached. |
af561417 PH |
175 | |
176 | 10. Unary negation and the bitwise logical operators and, or, xor, not, and | |
883335dc | 177 | shift, have been added to the eval: and eval10: expansion items. |
48c7f9e2 | 178 | |
194cc0e4 PH |
179 | 11. The variables $interface_address and $interface_port have been renamed |
180 | as $received_ip_address and $received_port, to make it clear that they | |
181 | relate to message reception rather than delivery. (The old names remain | |
182 | available for compatibility.) | |
183 | ||
883335dc PH |
184 | 12. The "message" modifier can now be used on "accept" and "discard" acl verbs |
185 | to vary the message that is sent when an SMTP command is accepted. | |
4e88a19f | 186 | |
495ae4b0 | 187 | |
4608d683 PH |
188 | Version 4.63 |
189 | ------------ | |
190 | ||
191 | 1. There is a new Boolean option called filter_prepend_home for the redirect | |
38a0a95f | 192 | router. |
4608d683 | 193 | |
45b91596 PH |
194 | 2. There is a new acl, set by acl_not_smtp_start, which is run right at the |
195 | start of receiving a non-SMTP message, before any of the message has been | |
38a0a95f | 196 | read. |
45b91596 | 197 | |
a5bd321b PH |
198 | 3. When an SMTP error message is specified in a "message" modifier in an ACL, |
199 | or in a :fail: or :defer: message in a redirect router, Exim now checks the | |
38a0a95f | 200 | start of the message for an SMTP error code. |
a5bd321b | 201 | |
6ec97b1b | 202 | 4. There is a new parameter for LDAP lookups called "referrals", which takes |
38a0a95f | 203 | one of the settings "follow" (the default) or "nofollow". |
6ec97b1b | 204 | |
e22ca4ac JJ |
205 | 5. Version 20070721.2 of exipick now included, offering these new options: |
206 | --reverse | |
207 | After all other sorting options have bee processed, reverse order | |
208 | before displaying messages (-R is synonym). | |
209 | --random | |
210 | Randomize order of matching messages before displaying. | |
211 | --size | |
212 | Instead of displaying the matching messages, display the sum | |
213 | of their sizes. | |
214 | --sort <variable>[,<variable>...] | |
215 | Before displaying matching messages, sort the messages according to | |
216 | each messages value for each variable. | |
217 | --not | |
218 | Negate the value for every test (returns inverse output from the | |
219 | same criteria without --not). | |
220 | ||
4608d683 | 221 | |
1cce3af8 PH |
222 | Version 4.62 |
223 | ------------ | |
224 | ||
225 | 1. The ${readsocket expansion item now supports Internet domain sockets as well | |
226 | as Unix domain sockets. If the first argument begins "inet:", it must be of | |
227 | the form "inet:host:port". The port is mandatory; it may be a number or the | |
228 | name of a TCP port in /etc/services. The host may be a name, or it may be an | |
229 | IP address. An ip address may optionally be enclosed in square brackets. | |
230 | This is best for IPv6 addresses. For example: | |
231 | ||
232 | ${readsocket{inet:[::1]:1234}{<request data>}... | |
233 | ||
234 | Only a single host name may be given, but if looking it up yield more than | |
235 | one IP address, they are each tried in turn until a connection is made. Once | |
236 | a connection has been made, the behaviour is as for ${readsocket with a Unix | |
237 | domain socket. | |
238 | ||
f7fd3850 PH |
239 | 2. If a redirect router sets up file or pipe deliveries for more than one |
240 | incoming address, and the relevant transport has batch_max set greater than | |
241 | one, a batch delivery now occurs. | |
242 | ||
d6629cdc PH |
243 | 3. The appendfile transport has a new option called maildirfolder_create_regex. |
244 | Its value is a regular expression. For a maildir delivery, this is matched | |
245 | against the maildir directory; if it matches, Exim ensures that a | |
246 | maildirfolder file is created alongside the new, cur, and tmp directories. | |
247 | ||
1cce3af8 | 248 | |
7e66e54d PH |
249 | Version 4.61 |
250 | ------------ | |
251 | ||
4f578862 PH |
252 | The documentation is up-to-date for the 4.61 release. Major new features since |
253 | the 4.60 release are: | |
254 | ||
255 | . An option called disable_ipv6, to disable the use of IPv6 completely. | |
256 | ||
257 | . An increase in the number of ACL variables to 20 of each type. | |
258 | ||
259 | . A change to use $auth1, $auth2, and $auth3 in authenticators instead of $1, | |
260 | $2, $3, (though those are still set) because the numeric variables get used | |
261 | for other things in complicated expansions. | |
262 | ||
843a41e8 | 263 | . The default for rfc1413_query_timeout has been changed from 30s to 5s. |
4f578862 PH |
264 | |
265 | . It is possible to use setclassresources() on some BSD OS to control the | |
266 | resources used in pipe deliveries. | |
267 | ||
268 | . A new ACL modifier called add_header, which can be used with any verb. | |
269 | ||
270 | . More errors are detectable in retry rules. | |
271 | ||
272 | There are a number of other additions too. | |
71fafd95 | 273 | |
7e66e54d | 274 | |
425ae40f | 275 | Version 4.60 |
b5aea5e1 PH |
276 | ------------ |
277 | ||
425ae40f PH |
278 | The documentation is up-to-date for the 4.60 release. Major new features since |
279 | the 4.50 release are: | |
1a46a8c5 | 280 | |
425ae40f | 281 | . Support for SQLite. |
1a46a8c5 | 282 | |
425ae40f | 283 | . Support for IGNOREQUOTA in LMTP. |
1a46a8c5 | 284 | |
425ae40f | 285 | . Extensions to the "submission mode" features. |
1a46a8c5 | 286 | |
425ae40f | 287 | . Support for Client SMTP Authorization (CSA). |
1a46a8c5 | 288 | |
425ae40f | 289 | . Support for ratelimiting hosts and users. |
b5aea5e1 | 290 | |
425ae40f | 291 | . New expansion items to help with the BATV "prvs" scheme. |
b5aea5e1 | 292 | |
425ae40f | 293 | . A "match_ip" condition, that matches an IP address against a list. |
35edf2ff | 294 | |
425ae40f | 295 | There are many more minor changes. |
495ae4b0 PH |
296 | |
297 | **** |