doc/doc-txt/NewStuff

   1 $Cambridge: exim/doc/doc-txt/NewStuff,v 1.110 2006/09/19 14:31:06 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
  17    at least six characters long, with the sixth character being either a digit
  18    or an underscore. The rest of the name can contain alphanumeric characters
  19    and underscores. This is a compatible change because the old set of
  20    variables such as acl_m12 are a subset of the allowed names. There may now
  21    be any number of ACL variables. For example:
  22
  23      set acl_c13   = value for original ACL variable
  24      set acl_c13b  = whatever
  25      set acl_m_foo = something
  26
  27    What happens if a syntactically valid but undefined ACL variable is
  28    referenced depends on the setting of the strict_acl_vars option. If it is
  29    false (the default), an empty string is substituted; if it is true, an error
  30    is generated. This affects all ACL variables, including the "old" ones such
  31    as acl_c4. (Previously there wasn't the concept of an undefined ACL
  32    variable.)
  33
  34    The implementation has been done in such a way that spool files containing
  35    ACL variable settings written by previous releases of Exim are compatible
  36    and can be read by the new release. If only the original numeric names are
  37    used, spool files written by the new release can be read by earlier
  38    releases.
  39
  40
  41 Version 4.63
  42 ------------
  43
  44 1. There is a new Boolean option called filter_prepend_home for the redirect
  45    router.
  46
  47 2. There is a new acl, set by acl_not_smtp_start, which is run right at the
  48    start of receiving a non-SMTP message, before any of the message has been
  49    read.
  50
  51 3. When an SMTP error message is specified in a "message" modifier in an ACL,
  52    or in a :fail: or :defer: message in a redirect router, Exim now checks the
  53    start of the message for an SMTP error code.
  54
  55 4. There is a new parameter for LDAP lookups called "referrals", which takes
  56    one of the settings "follow" (the default) or "nofollow".
  57
  58 5. Version 20070721.2 of exipick now included, offering these new options:
  59     --reverse
  60         After all other sorting options have bee processed, reverse order
  61         before displaying messages (-R is synonym).
  62     --random
  63         Randomize order of matching messages before displaying.
  64     --size
  65         Instead of displaying the matching messages, display the sum
  66         of their sizes.
  67     --sort <variable>[,<variable>...]
  68         Before displaying matching messages, sort the messages according to
  69         each messages value for each variable.
  70     --not
  71         Negate the value for every test (returns inverse output from the
  72         same criteria without --not).
  73
  74
  75 Version 4.62
  76 ------------
  77
  78 1. The ${readsocket expansion item now supports Internet domain sockets as well
  79    as Unix domain sockets. If the first argument begins "inet:", it must be of
  80    the form "inet:host:port". The port is mandatory; it may be a number or the
  81    name of a TCP port in /etc/services. The host may be a name, or it may be an
  82    IP address. An ip address may optionally be enclosed in square brackets.
  83    This is best for IPv6 addresses. For example:
  84
  85      ${readsocket{inet:[::1]:1234}{<request data>}...
  86
  87    Only a single host name may be given, but if looking it up yield more than
  88    one IP address, they are each tried in turn until a connection is made. Once
  89    a connection has been made, the behaviour is as for ${readsocket with a Unix
  90    domain socket.
  91
  92 2. If a redirect router sets up file or pipe deliveries for more than one
  93    incoming address, and the relevant transport has batch_max set greater than
  94    one, a batch delivery now occurs.
  95
  96 3. The appendfile transport has a new option called maildirfolder_create_regex.
  97    Its value is a regular expression. For a maildir delivery, this is matched
  98    against the maildir directory; if it matches, Exim ensures that a
  99    maildirfolder file is created alongside the new, cur, and tmp directories.
 100
 101
 102 Version 4.61
 103 ------------
 104
 105 The documentation is up-to-date for the 4.61 release. Major new features since
 106 the 4.60 release are:
 107
 108 . An option called disable_ipv6, to disable the use of IPv6 completely.
 109
 110 . An increase in the number of ACL variables to 20 of each type.
 111
 112 . A change to use $auth1, $auth2, and $auth3 in authenticators instead of $1,
 113   $2, $3, (though those are still set) because the numeric variables get used
 114   for other things in complicated expansions.
 115
 116 . The default for rfc1413_query_timeout has been changed from 30s to 5s.
 117
 118 . It is possible to use setclassresources() on some BSD OS to control the
 119   resources used in pipe deliveries.
 120
 121 . A new ACL modifier called add_header, which can be used with any verb.
 122
 123 . More errors are detectable in retry rules.
 124
 125 There are a number of other additions too.
 126
 127
 128 Version 4.60
 129 ------------
 130
 131 The documentation is up-to-date for the 4.60 release. Major new features since
 132 the 4.50 release are:
 133
 134 . Support for SQLite.
 135
 136 . Support for IGNOREQUOTA in LMTP.
 137
 138 . Extensions to the "submission mode" features.
 139
 140 . Support for Client SMTP Authorization (CSA).
 141
 142 . Support for ratelimiting hosts and users.
 143
 144 . New expansion items to help with the BATV "prvs" scheme.
 145
 146 . A "match_ip" condition, that matches an IP address against a list.
 147
 148 There are many more minor changes.
 149
 150 ****