doc/doc-txt/NewStuff

   1 $Cambridge: exim/doc/doc-txt/NewStuff,v 1.105 2006/07/13 13:53:32 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 but have not yet made it into the main manual (which is most conveniently
   8 updated when there is a relatively large batch of changes). The doc/ChangeLog
   9 file contains a listing of all changes, including bug fixes.
  10
  11 Version 4.63
  12 ------------
  13
  14 1. There is a new Boolean option called filter_prepend_home for the redirect
  15    router. It defaults true, for backward compatibility. If a "save" command in
  16    an Exim filter has a relative path for its argument, and $home is defined,
  17    it is automatically prepended to the relative path. This action can now be
  18    prevented by setting filter_prepend_home false.
  19
  20 2. There is a new acl, set by acl_not_smtp_start, which is run right at the
  21    start of receiving a non-SMTP message, before any of the message has been
  22    read. (This is the analogue of the acl_smtp_predata ACL for SMTP input.) The
  23    result of this ACL is ignored; it cannot be used to reject a message. If
  24    you really need to, you could set a value in an ACL variable here and reject
  25    based on that in the acl_not_smtp ACL. However, this ACL can be used to set
  26    controls, and in particular, it can be used to set control=suppress_local_
  27    fixups, which cannot be used in the acl_not_smtp ACL because by the time
  28    that ACL is run, it is too late. When the acl_not_smtp_start ACL is run, the
  29    sender and recipients are known, so the "senders" and "sender_domains"
  30    conditions and $sender_address and $recipients variables can be used.
  31    Variables such as $authenticated_ sender are also available. It is possible
  32    to specify added header lines in this ACL.
  33
  34 3. When an SMTP error message is specified in a "message" modifier in an ACL,
  35    or in a :fail: or :defer: message in a redirect router, Exim now checks the
  36    start of the message for an SMTP error code. This consists of three digits
  37    followed by a space, optionally followed by an extended code of the form
  38    n.n.n, also followed by a space. If this is the case and the very first
  39    digit is the same as the default error code, the code from the message is
  40    used instead. If the very first digit is incorrect, a panic error is logged,
  41    and the default code is used. This is an incompatible change, but it is not
  42    expected to affect many (if any) configurations. It is possible to suppress
  43    the use of the supplied code in a redirect router by setting the
  44    smtp_error_code option false. In this case, any SMTP code is quietly
  45    ignored.
  46
  47
  48 Version 4.62
  49 ------------
  50
  51 1. The ${readsocket expansion item now supports Internet domain sockets as well
  52    as Unix domain sockets. If the first argument begins "inet:", it must be of
  53    the form "inet:host:port". The port is mandatory; it may be a number or the
  54    name of a TCP port in /etc/services. The host may be a name, or it may be an
  55    IP address. An ip address may optionally be enclosed in square brackets.
  56    This is best for IPv6 addresses. For example:
  57
  58      ${readsocket{inet:[::1]:1234}{<request data>}...
  59
  60    Only a single host name may be given, but if looking it up yield more than
  61    one IP address, they are each tried in turn until a connection is made. Once
  62    a connection has been made, the behaviour is as for ${readsocket with a Unix
  63    domain socket.
  64
  65 2. If a redirect router sets up file or pipe deliveries for more than one
  66    incoming address, and the relevant transport has batch_max set greater than
  67    one, a batch delivery now occurs.
  68
  69 3. The appendfile transport has a new option called maildirfolder_create_regex.
  70    Its value is a regular expression. For a maildir delivery, this is matched
  71    against the maildir directory; if it matches, Exim ensures that a
  72    maildirfolder file is created alongside the new, cur, and tmp directories.
  73
  74
  75 Version 4.61
  76 ------------
  77
  78 The documentation is up-to-date for the 4.61 release. Major new features since
  79 the 4.60 release are:
  80
  81 . An option called disable_ipv6, to disable the use of IPv6 completely.
  82
  83 . An increase in the number of ACL variables to 20 of each type.
  84
  85 . A change to use $auth1, $auth2, and $auth3 in authenticators instead of $1,
  86   $2, $3, (though those are still set) because the numeric variables get used
  87   for other things in complicated expansions.
  88
  89 . The default for rfc1413_query_timeout has been changed from 30s to 5s.
  90
  91 . It is possible to use setclassresources() on some BSD OS to control the
  92   resources used in pipe deliveries.
  93
  94 . A new ACL modifier called add_header, which can be used with any verb.
  95
  96 . More errors are detectable in retry rules.
  97
  98 There are a number of other additions too.
  99
 100
 101 Version 4.60
 102 ------------
 103
 104 The documentation is up-to-date for the 4.60 release. Major new features since
 105 the 4.50 release are:
 106
 107 . Support for SQLite.
 108
 109 . Support for IGNOREQUOTA in LMTP.
 110
 111 . Extensions to the "submission mode" features.
 112
 113 . Support for Client SMTP Authorization (CSA).
 114
 115 . Support for ratelimiting hosts and users.
 116
 117 . New expansion items to help with the BATV "prvs" scheme.
 118
 119 . A "match_ip" condition, that matches an IP address against a list.
 120
 121 There are many more minor changes.
 122
 123 ****