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toc_title="Exim's interfaces to mail filtering"
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toc_title="Exim's interfaces to mail filtering"
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<author><firstname>Philip</firstname><surname>Hazel</surname></author>
<authorinitials>PH</authorinitials>
<revhistory><revision>
<author><firstname>Philip</firstname><surname>Hazel</surname></author>
<authorinitials>PH</authorinitials>
<revhistory><revision>
.chapter "Forwarding and filtering in Exim" "CHAPforandfilt"
This document describes the user interfaces to Exim's in-built mail filtering
.chapter "Forwarding and filtering in Exim" "CHAPforandfilt"
This document describes the user interfaces to Exim's in-built mail filtering
-facilities, and is copyright © University of Cambridge 2007. It
-corresponds to Exim version 4.76.
+facilities, and is copyright © The Exim Maintainers ©year(). It
+corresponds to Exim version &version().
The Exim Sieve implementation offers the core as defined by RFC 3028,
comparison tests, the subaddress parameter, the &*copy*&, &*envelope*&,
&*fileinto*&, &*notify*&, and &*vacation*& extensions, but not the &*reject*&
The Exim Sieve implementation offers the core as defined by RFC 3028,
comparison tests, the subaddress parameter, the &*copy*&, &*envelope*&,
&*fileinto*&, &*notify*&, and &*vacation*& extensions, but not the &*reject*&
-extension. Exim does not support message delivery notifications (MDNs), so
-adding it just to the Sieve filter (as required for &*reject*&) makes little
-sense.
+extension.
+.new
+Exim did not support message delivery notifications (MDNs) when Sieve handling
+was introduced, so &*reject*& (which need them) could not be supported.
+.wen
In order for Sieve to work properly in Exim, the system administrator needs to
make some adjustments to the Exim configuration. These are described in the
In order for Sieve to work properly in Exim, the system administrator needs to
make some adjustments to the Exim configuration. These are described in the
&`e.g. logwrite "$tod_log $message_id processed"`&
.endd
It is possible to have more than one &(logfile)& command, to specify writing to
&`e.g. logwrite "$tod_log $message_id processed"`&
.endd
It is possible to have more than one &(logfile)& command, to specify writing to
-different log files in different circumstances. Writing takes place at the end
+different log files in different circumstances.
+A previously opened log is closed on a subsequent &(logfile)& command.
+Writing takes place at the end
of the file, and a newline character is added to the end of each string if
there isn't one already there. Newlines can be put in the middle of the string
by using the &"\n"& escape sequence. Lines from simultaneous deliveries may get
of the file, and a newline character is added to the end of each string if
there isn't one already there. Newlines can be put in the middle of the string
by using the &"\n"& escape sequence. Lines from simultaneous deliveries may get
library, which provides regular expressions that are compatible with Perl.
The match succeeds if the regular expression matches any part of the first
library, which provides regular expressions that are compatible with Perl.
The match succeeds if the regular expression matches any part of the first