doc/doc-txt/NewStuff

   1 $Cambridge: exim/doc/doc-txt/NewStuff,v 1.109 2006/09/19 11:28:44 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) and are
  17    at least 6 characters long. However, only alphanumeric characters and
  18    underscores are allowed. This is a compatible change because the old set of
  19    variables such as acl_m12 are a subset of the allowed names. There may now
  20    be any number of ACL variables. For example:
  21
  22      set acl_c_foo = something
  23      set acl_ccc   = thingsome
  24      set acl_m13   = value for original ACL variable
  25      set acl_m13b  = whatever
  26
  27    What happens if an undefined ACL variable is referenced depends on the
  28    setting of the strict_acl_vars option. If it is false (the default), an
  29    empty string is substituted; if it is true, an error is generated. This
  30    affects all ACL variables, including the "old" ones such as acl_c4.
  31    (Previously there wasn't the concept of an undefined ACL variable.)
  32
  33    The implementation has been done in such a way that spool files containing
  34    ACL variable settings written by previous releases of Exim are compatible
  35    and can be read by the new release. If only the original numeric names are
  36    used, spool files written by the new release can be read by earlier
  37    releases.
  38
  39
  40 Version 4.63
  41 ------------
  42
  43 1. There is a new Boolean option called filter_prepend_home for the redirect
  44    router.
  45
  46 2. There is a new acl, set by acl_not_smtp_start, which is run right at the
  47    start of receiving a non-SMTP message, before any of the message has been
  48    read.
  49
  50 3. When an SMTP error message is specified in a "message" modifier in an ACL,
  51    or in a :fail: or :defer: message in a redirect router, Exim now checks the
  52    start of the message for an SMTP error code.
  53
  54 4. There is a new parameter for LDAP lookups called "referrals", which takes
  55    one of the settings "follow" (the default) or "nofollow".
  56
  57 5. Version 20070721.2 of exipick now included, offering these new options:
  58     --reverse
  59         After all other sorting options have bee processed, reverse order
  60         before displaying messages (-R is synonym).
  61     --random
  62         Randomize order of matching messages before displaying.
  63     --size
  64         Instead of displaying the matching messages, display the sum
  65         of their sizes.
  66     --sort <variable>[,<variable>...]
  67         Before displaying matching messages, sort the messages according to
  68         each messages value for each variable.
  69     --not
  70         Negate the value for every test (returns inverse output from the
  71         same criteria without --not).
  72
  73
  74 Version 4.62
  75 ------------
  76
  77 1. The ${readsocket expansion item now supports Internet domain sockets as well
  78    as Unix domain sockets. If the first argument begins "inet:", it must be of
  79    the form "inet:host:port". The port is mandatory; it may be a number or the
  80    name of a TCP port in /etc/services. The host may be a name, or it may be an
  81    IP address. An ip address may optionally be enclosed in square brackets.
  82    This is best for IPv6 addresses. For example:
  83
  84      ${readsocket{inet:[::1]:1234}{<request data>}...
  85
  86    Only a single host name may be given, but if looking it up yield more than
  87    one IP address, they are each tried in turn until a connection is made. Once
  88    a connection has been made, the behaviour is as for ${readsocket with a Unix
  89    domain socket.
  90
  91 2. If a redirect router sets up file or pipe deliveries for more than one
  92    incoming address, and the relevant transport has batch_max set greater than
  93    one, a batch delivery now occurs.
  94
  95 3. The appendfile transport has a new option called maildirfolder_create_regex.
  96    Its value is a regular expression. For a maildir delivery, this is matched
  97    against the maildir directory; if it matches, Exim ensures that a
  98    maildirfolder file is created alongside the new, cur, and tmp directories.
  99
 100
 101 Version 4.61
 102 ------------
 103
 104 The documentation is up-to-date for the 4.61 release. Major new features since
 105 the 4.60 release are:
 106
 107 . An option called disable_ipv6, to disable the use of IPv6 completely.
 108
 109 . An increase in the number of ACL variables to 20 of each type.
 110
 111 . A change to use $auth1, $auth2, and $auth3 in authenticators instead of $1,
 112   $2, $3, (though those are still set) because the numeric variables get used
 113   for other things in complicated expansions.
 114
 115 . The default for rfc1413_query_timeout has been changed from 30s to 5s.
 116
 117 . It is possible to use setclassresources() on some BSD OS to control the
 118   resources used in pipe deliveries.
 119
 120 . A new ACL modifier called add_header, which can be used with any verb.
 121
 122 . More errors are detectable in retry rules.
 123
 124 There are a number of other additions too.
 125
 126
 127 Version 4.60
 128 ------------
 129
 130 The documentation is up-to-date for the 4.60 release. Major new features since
 131 the 4.50 release are:
 132
 133 . Support for SQLite.
 134
 135 . Support for IGNOREQUOTA in LMTP.
 136
 137 . Extensions to the "submission mode" features.
 138
 139 . Support for Client SMTP Authorization (CSA).
 140
 141 . Support for ratelimiting hosts and users.
 142
 143 . New expansion items to help with the BATV "prvs" scheme.
 144
 145 . A "match_ip" condition, that matches an IP address against a list.
 146
 147 There are many more minor changes.
 148
 149 ****