doc/doc-txt/NewStuff

   1 $Cambridge: exim/doc/doc-txt/NewStuff,v 1.125 2006/12/20 09:44:37 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
  12 Version 4.64
  13 ------------
  14
  15  1. ACL variables can now be given arbitrary names, as long as they start with
  16     "acl_c" or "acl_m" (for connection variables and message variables), are at
  17     least six characters long, with the sixth character being either a digit or
  18     an underscore.
  19
  20  2. There is a new ACL modifier called log_reject_target. It makes it possible
  21     to specify which logs are used for messages about ACL rejections.
  22
  23  3. There is a new authenticator called "dovecot". This is an interface to the
  24     authentication facility of the Dovecot POP/IMAP server, which can support a
  25     number of authentication methods.
  26
  27  4. The variable $message_headers_raw provides a concatenation of all the
  28     messages's headers without any decoding. This is in contrast to
  29     $message_headers, which does RFC2047 decoding on the header contents.
  30
  31  5. In a DNS black list, if two domain names, comma-separated, are given, the
  32     second is used first to do an initial check, making use of any IP value
  33     restrictions that are set. If there is a match, the first domain is used,
  34     without any IP value restrictions, to get the TXT record.
  35
  36  6. All authenticators now have a server_condition option.
  37
  38  7. There is a new command-line option called -Mset. It is useful only in
  39     conjunction with -be (that is, when testing string expansions). It must be
  40     followed by a message id; Exim loads the given message from its spool
  41     before doing the expansions.
  42
  43  8. Another similar new command-line option is called -bem. It operates like
  44     -be except that it must be followed by the name of a file that contains a
  45     message.
  46
  47  9. When an address is delayed because of a 4xx response to a RCPT command, it
  48     is now the combination of sender and recipient that is delayed in
  49     subsequent queue runs until its retry time is reached.
  50
  51 10. Unary negation and the bitwise logical operators and, or, xor, not, and
  52     shift, have been added to the eval: and eval10: expansion items.
  53
  54 11. The variables $interface_address and $interface_port have been renamed
  55     as $received_ip_address and $received_port, to make it clear that they
  56     relate to message reception rather than delivery. (The old names remain
  57     available for compatibility.)
  58
  59 12. The "message" modifier can now be used on "accept" and "discard" acl verbs
  60     to vary the message that is sent when an SMTP command is accepted.
  61
  62
  63 Version 4.63
  64 ------------
  65
  66 1. There is a new Boolean option called filter_prepend_home for the redirect
  67    router.
  68
  69 2. There is a new acl, set by acl_not_smtp_start, which is run right at the
  70    start of receiving a non-SMTP message, before any of the message has been
  71    read.
  72
  73 3. When an SMTP error message is specified in a "message" modifier in an ACL,
  74    or in a :fail: or :defer: message in a redirect router, Exim now checks the
  75    start of the message for an SMTP error code.
  76
  77 4. There is a new parameter for LDAP lookups called "referrals", which takes
  78    one of the settings "follow" (the default) or "nofollow".
  79
  80 5. Version 20070721.2 of exipick now included, offering these new options:
  81     --reverse
  82         After all other sorting options have bee processed, reverse order
  83         before displaying messages (-R is synonym).
  84     --random
  85         Randomize order of matching messages before displaying.
  86     --size
  87         Instead of displaying the matching messages, display the sum
  88         of their sizes.
  89     --sort <variable>[,<variable>...]
  90         Before displaying matching messages, sort the messages according to
  91         each messages value for each variable.
  92     --not
  93         Negate the value for every test (returns inverse output from the
  94         same criteria without --not).
  95
  96
  97 Version 4.62
  98 ------------
  99
 100 1. The ${readsocket expansion item now supports Internet domain sockets as well
 101    as Unix domain sockets. If the first argument begins "inet:", it must be of
 102    the form "inet:host:port". The port is mandatory; it may be a number or the
 103    name of a TCP port in /etc/services. The host may be a name, or it may be an
 104    IP address. An ip address may optionally be enclosed in square brackets.
 105    This is best for IPv6 addresses. For example:
 106
 107      ${readsocket{inet:[::1]:1234}{<request data>}...
 108
 109    Only a single host name may be given, but if looking it up yield more than
 110    one IP address, they are each tried in turn until a connection is made. Once
 111    a connection has been made, the behaviour is as for ${readsocket with a Unix
 112    domain socket.
 113
 114 2. If a redirect router sets up file or pipe deliveries for more than one
 115    incoming address, and the relevant transport has batch_max set greater than
 116    one, a batch delivery now occurs.
 117
 118 3. The appendfile transport has a new option called maildirfolder_create_regex.
 119    Its value is a regular expression. For a maildir delivery, this is matched
 120    against the maildir directory; if it matches, Exim ensures that a
 121    maildirfolder file is created alongside the new, cur, and tmp directories.
 122
 123
 124 Version 4.61
 125 ------------
 126
 127 The documentation is up-to-date for the 4.61 release. Major new features since
 128 the 4.60 release are:
 129
 130 . An option called disable_ipv6, to disable the use of IPv6 completely.
 131
 132 . An increase in the number of ACL variables to 20 of each type.
 133
 134 . A change to use $auth1, $auth2, and $auth3 in authenticators instead of $1,
 135   $2, $3, (though those are still set) because the numeric variables get used
 136   for other things in complicated expansions.
 137
 138 . The default for rfc1413_query_timeout has been changed from 30s to 5s.
 139
 140 . It is possible to use setclassresources() on some BSD OS to control the
 141   resources used in pipe deliveries.
 142
 143 . A new ACL modifier called add_header, which can be used with any verb.
 144
 145 . More errors are detectable in retry rules.
 146
 147 There are a number of other additions too.
 148
 149
 150 Version 4.60
 151 ------------
 152
 153 The documentation is up-to-date for the 4.60 release. Major new features since
 154 the 4.50 release are:
 155
 156 . Support for SQLite.
 157
 158 . Support for IGNOREQUOTA in LMTP.
 159
 160 . Extensions to the "submission mode" features.
 161
 162 . Support for Client SMTP Authorization (CSA).
 163
 164 . Support for ratelimiting hosts and users.
 165
 166 . New expansion items to help with the BATV "prvs" scheme.
 167
 168 . A "match_ip" condition, that matches an IP address against a list.
 169
 170 There are many more minor changes.
 171
 172 ****