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$Cambridge: exim/doc/doc-txt/NewStuff,v 1.126 2007/01/15 15:59:22 ph10 Exp $
New Features in Exim
--------------------
This file contains descriptions of new features that have been added to Exim.
Before a formal release, there may be quite a lot of detail so that people can
test from the snapshots or the CVS before the documentation is updated. Once
the documentation is updated, this file is reduced to a short list.
Version 4.67
------------
1. There is a new log selector called smtp_no_mail, which is not included in
the default setting. When it is set, a line is written to the main log
whenever an accepted SMTP connection terminates without having issued a
MAIL command. This includes both the case when the connection is dropped,
and the case when QUIT is used. Note that it does not include cases where
the connection is rejected right at the start (by an ACL, or because there
are too many connections, or whatever). These cases already have their own
log lines.
The log line that is written contains the identity of the client in the
usual way, followed by D= and a time, which records the duration of the
connection. If the connection was authenticated, this fact is logged
exactly as it is for an incoming message, with an A= item. If the
connection was encrypted, CV=, DN=, and X= items may appear as they do for
an incoming message, controlled by the same logging options.
Finally, if any SMTP commands were issued during the connection, a C= item
is added to the line, listing the commands that were used. For example,
C=EHLO,QUIT
shows that the client issued QUIT straight after EHLO. If there were fewer
than 20 commands, they are all listed. If there were more than 20 commands,
the last 20 are listed, preceded by "...". However, with the default
setting of 10 for smtp_accep_max_nonmail, the connection will in any case
be aborted before 20 non-mail commands are processed.
Version 4.66
------------
No new features were added to 4.66.
Version 4.65
------------
No new features were added to 4.65.
Version 4.64
------------
1. ACL variables can now be given arbitrary names, as long as they start with
"acl_c" or "acl_m" (for connection variables and message variables), are at
least six characters long, with the sixth character being either a digit or
an underscore.
2. There is a new ACL modifier called log_reject_target. It makes it possible
to specify which logs are used for messages about ACL rejections.
3. There is a new authenticator called "dovecot". This is an interface to the
authentication facility of the Dovecot POP/IMAP server, which can support a
number of authentication methods.
4. The variable $message_headers_raw provides a concatenation of all the
messages's headers without any decoding. This is in contrast to
$message_headers, which does RFC2047 decoding on the header contents.
5. In a DNS black list, if two domain names, comma-separated, are given, the
second is used first to do an initial check, making use of any IP value
restrictions that are set. If there is a match, the first domain is used,
without any IP value restrictions, to get the TXT record.
6. All authenticators now have a server_condition option.
7. There is a new command-line option called -Mset. It is useful only in
conjunction with -be (that is, when testing string expansions). It must be
followed by a message id; Exim loads the given message from its spool
before doing the expansions.
8. Another similar new command-line option is called -bem. It operates like
-be except that it must be followed by the name of a file that contains a
message.
9. When an address is delayed because of a 4xx response to a RCPT command, it
is now the combination of sender and recipient that is delayed in
subsequent queue runs until its retry time is reached.
10. Unary negation and the bitwise logical operators and, or, xor, not, and
shift, have been added to the eval: and eval10: expansion items.
11. The variables $interface_address and $interface_port have been renamed
as $received_ip_address and $received_port, to make it clear that they
relate to message reception rather than delivery. (The old names remain
available for compatibility.)
12. The "message" modifier can now be used on "accept" and "discard" acl verbs
to vary the message that is sent when an SMTP command is accepted.
Version 4.63
------------
1. There is a new Boolean option called filter_prepend_home for the redirect
router.
2. There is a new acl, set by acl_not_smtp_start, which is run right at the
start of receiving a non-SMTP message, before any of the message has been
read.
3. When an SMTP error message is specified in a "message" modifier in an ACL,
or in a :fail: or :defer: message in a redirect router, Exim now checks the
start of the message for an SMTP error code.
4. There is a new parameter for LDAP lookups called "referrals", which takes
one of the settings "follow" (the default) or "nofollow".
5. Version 20070721.2 of exipick now included, offering these new options:
--reverse
After all other sorting options have bee processed, reverse order
before displaying messages (-R is synonym).
--random
Randomize order of matching messages before displaying.
--size
Instead of displaying the matching messages, display the sum
of their sizes.
--sort <variable>[,<variable>...]
Before displaying matching messages, sort the messages according to
each messages value for each variable.
--not
Negate the value for every test (returns inverse output from the
same criteria without --not).
Version 4.62
------------
1. The ${readsocket expansion item now supports Internet domain sockets as well
as Unix domain sockets. If the first argument begins "inet:", it must be of
the form "inet:host:port". The port is mandatory; it may be a number or the
name of a TCP port in /etc/services. The host may be a name, or it may be an
IP address. An ip address may optionally be enclosed in square brackets.
This is best for IPv6 addresses. For example:
${readsocket{inet:[::1]:1234}{<request data>}...
Only a single host name may be given, but if looking it up yield more than
one IP address, they are each tried in turn until a connection is made. Once
a connection has been made, the behaviour is as for ${readsocket with a Unix
domain socket.
2. If a redirect router sets up file or pipe deliveries for more than one
incoming address, and the relevant transport has batch_max set greater than
one, a batch delivery now occurs.
3. The appendfile transport has a new option called maildirfolder_create_regex.
Its value is a regular expression. For a maildir delivery, this is matched
against the maildir directory; if it matches, Exim ensures that a
maildirfolder file is created alongside the new, cur, and tmp directories.
Version 4.61
------------
The documentation is up-to-date for the 4.61 release. Major new features since
the 4.60 release are:
. An option called disable_ipv6, to disable the use of IPv6 completely.
. An increase in the number of ACL variables to 20 of each type.
. A change to use $auth1, $auth2, and $auth3 in authenticators instead of $1,
$2, $3, (though those are still set) because the numeric variables get used
for other things in complicated expansions.
. The default for rfc1413_query_timeout has been changed from 30s to 5s.
. It is possible to use setclassresources() on some BSD OS to control the
resources used in pipe deliveries.
. A new ACL modifier called add_header, which can be used with any verb.
. More errors are detectable in retry rules.
There are a number of other additions too.
Version 4.60
------------
The documentation is up-to-date for the 4.60 release. Major new features since
the 4.50 release are:
. Support for SQLite.
. Support for IGNOREQUOTA in LMTP.
. Extensions to the "submission mode" features.
. Support for Client SMTP Authorization (CSA).
. Support for ratelimiting hosts and users.
. New expansion items to help with the BATV "prvs" scheme.
. A "match_ip" condition, that matches an IP address against a list.
There are many more minor changes.
****
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