doc/doc-txt/NewStuff

   1 $Cambridge: exim/doc/doc-txt/NewStuff,v 1.126 2007/01/15 15:59:22 ph10 Exp $
   2
   3 New Features in Exim
   4 --------------------
   5
   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
  11 Version 4.67
  12 ------------
  13
  14  1. There is a new log selector called smtp_no_mail, which is not included in
  15     the default setting. When it is set, a line is written to the main log
  16     whenever an accepted SMTP connection terminates without having issued a
  17     MAIL command. This includes both the case when the connection is dropped,
  18     and the case when QUIT is used. Note that it does not include cases where
  19     the connection is rejected right at the start (by an ACL, or because there
  20     are too many connections, or whatever). These cases already have their own
  21     log lines.
  22
  23     The log line that is written contains the identity of the client in the
  24     usual way, followed by D= and a time, which records the duration of the
  25     connection. If the connection was authenticated, this fact is logged
  26     exactly as it is for an incoming message, with an A= item. If the
  27     connection was encrypted, CV=, DN=, and X= items may appear as they do for
  28     an incoming message, controlled by the same logging options.
  29
  30     Finally, if any SMTP commands were issued during the connection, a C= item
  31     is added to the line, listing the commands that were used. For example,
  32
  33       C=EHLO,QUIT
  34
  35     shows that the client issued QUIT straight after EHLO. If there were fewer
  36     than 20 commands, they are all listed. If there were more than 20 commands,
  37     the last 20 are listed, preceded by "...". However, with the default
  38     setting of 10 for smtp_accep_max_nonmail, the connection will in any case
  39     be aborted before 20 non-mail commands are processed.
  40
  41
  42 Version 4.66
  43 ------------
  44
  45 No new features were added to 4.66.
  46
  47
  48 Version 4.65
  49 ------------
  50
  51 No new features were added to 4.65.
  52
  53
  54 Version 4.64
  55 ------------
  56
  57  1. ACL variables can now be given arbitrary names, as long as they start with
  58     "acl_c" or "acl_m" (for connection variables and message variables), are at
  59     least six characters long, with the sixth character being either a digit or
  60     an underscore.
  61
  62  2. There is a new ACL modifier called log_reject_target. It makes it possible
  63     to specify which logs are used for messages about ACL rejections.
  64
  65  3. There is a new authenticator called "dovecot". This is an interface to the
  66     authentication facility of the Dovecot POP/IMAP server, which can support a
  67     number of authentication methods.
  68
  69  4. The variable $message_headers_raw provides a concatenation of all the
  70     messages's headers without any decoding. This is in contrast to
  71     $message_headers, which does RFC2047 decoding on the header contents.
  72
  73  5. In a DNS black list, if two domain names, comma-separated, are given, the
  74     second is used first to do an initial check, making use of any IP value
  75     restrictions that are set. If there is a match, the first domain is used,
  76     without any IP value restrictions, to get the TXT record.
  77
  78  6. All authenticators now have a server_condition option.
  79
  80  7. There is a new command-line option called -Mset. It is useful only in
  81     conjunction with -be (that is, when testing string expansions). It must be
  82     followed by a message id; Exim loads the given message from its spool
  83     before doing the expansions.
  84
  85  8. Another similar new command-line option is called -bem. It operates like
  86     -be except that it must be followed by the name of a file that contains a
  87     message.
  88
  89  9. When an address is delayed because of a 4xx response to a RCPT command, it
  90     is now the combination of sender and recipient that is delayed in
  91     subsequent queue runs until its retry time is reached.
  92
  93 10. Unary negation and the bitwise logical operators and, or, xor, not, and
  94     shift, have been added to the eval: and eval10: expansion items.
  95
  96 11. The variables $interface_address and $interface_port have been renamed
  97     as $received_ip_address and $received_port, to make it clear that they
  98     relate to message reception rather than delivery. (The old names remain
  99     available for compatibility.)
 100
 101 12. The "message" modifier can now be used on "accept" and "discard" acl verbs
 102     to vary the message that is sent when an SMTP command is accepted.
 103
 104
 105 Version 4.63
 106 ------------
 107
 108 1. There is a new Boolean option called filter_prepend_home for the redirect
 109    router.
 110
 111 2. There is a new acl, set by acl_not_smtp_start, which is run right at the
 112    start of receiving a non-SMTP message, before any of the message has been
 113    read.
 114
 115 3. When an SMTP error message is specified in a "message" modifier in an ACL,
 116    or in a :fail: or :defer: message in a redirect router, Exim now checks the
 117    start of the message for an SMTP error code.
 118
 119 4. There is a new parameter for LDAP lookups called "referrals", which takes
 120    one of the settings "follow" (the default) or "nofollow".
 121
 122 5. Version 20070721.2 of exipick now included, offering these new options:
 123     --reverse
 124         After all other sorting options have bee processed, reverse order
 125         before displaying messages (-R is synonym).
 126     --random
 127         Randomize order of matching messages before displaying.
 128     --size
 129         Instead of displaying the matching messages, display the sum
 130         of their sizes.
 131     --sort <variable>[,<variable>...]
 132         Before displaying matching messages, sort the messages according to
 133         each messages value for each variable.
 134     --not
 135         Negate the value for every test (returns inverse output from the
 136         same criteria without --not).
 137
 138
 139 Version 4.62
 140 ------------
 141
 142 1. The ${readsocket expansion item now supports Internet domain sockets as well
 143    as Unix domain sockets. If the first argument begins "inet:", it must be of
 144    the form "inet:host:port". The port is mandatory; it may be a number or the
 145    name of a TCP port in /etc/services. The host may be a name, or it may be an
 146    IP address. An ip address may optionally be enclosed in square brackets.
 147    This is best for IPv6 addresses. For example:
 148
 149      ${readsocket{inet:[::1]:1234}{<request data>}...
 150
 151    Only a single host name may be given, but if looking it up yield more than
 152    one IP address, they are each tried in turn until a connection is made. Once
 153    a connection has been made, the behaviour is as for ${readsocket with a Unix
 154    domain socket.
 155
 156 2. If a redirect router sets up file or pipe deliveries for more than one
 157    incoming address, and the relevant transport has batch_max set greater than
 158    one, a batch delivery now occurs.
 159
 160 3. The appendfile transport has a new option called maildirfolder_create_regex.
 161    Its value is a regular expression. For a maildir delivery, this is matched
 162    against the maildir directory; if it matches, Exim ensures that a
 163    maildirfolder file is created alongside the new, cur, and tmp directories.
 164
 165
 166 Version 4.61
 167 ------------
 168
 169 The documentation is up-to-date for the 4.61 release. Major new features since
 170 the 4.60 release are:
 171
 172 . An option called disable_ipv6, to disable the use of IPv6 completely.
 173
 174 . An increase in the number of ACL variables to 20 of each type.
 175
 176 . A change to use $auth1, $auth2, and $auth3 in authenticators instead of $1,
 177   $2, $3, (though those are still set) because the numeric variables get used
 178   for other things in complicated expansions.
 179
 180 . The default for rfc1413_query_timeout has been changed from 30s to 5s.
 181
 182 . It is possible to use setclassresources() on some BSD OS to control the
 183   resources used in pipe deliveries.
 184
 185 . A new ACL modifier called add_header, which can be used with any verb.
 186
 187 . More errors are detectable in retry rules.
 188
 189 There are a number of other additions too.
 190
 191
 192 Version 4.60
 193 ------------
 194
 195 The documentation is up-to-date for the 4.60 release. Major new features since
 196 the 4.50 release are:
 197
 198 . Support for SQLite.
 199
 200 . Support for IGNOREQUOTA in LMTP.
 201
 202 . Extensions to the "submission mode" features.
 203
 204 . Support for Client SMTP Authorization (CSA).
 205
 206 . Support for ratelimiting hosts and users.
 207
 208 . New expansion items to help with the BATV "prvs" scheme.
 209
 210 . A "match_ip" condition, that matches an IP address against a list.
 211
 212 There are many more minor changes.
 213
 214 ****