. Copyright year. Update this (only) when changing content.
.macro copyyear
-2014
+2023
.endmacro
. ===========================================================================
</revision></revhistory>
<copyright><year>
.copyyear
- </year><holder>University of Cambridge</holder></copyright>
+ </year><holder>The Exim Maintainers</holder></copyright>
</bookinfo>
.literal off
.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 ©year(). It
+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*&
-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.
+Exim did not support message delivery notifications (MDNs) when Sieve handling
+was introduced, so &*reject*& (which need them) could not be supported.
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
.endd
For a &"matches"& test, after expansion of both strings, the second one is
-interpreted as a regular expression. Exim uses the PCRE regular expression
+interpreted as a regular expression. Exim uses the PCRE2 regular expression
library, which provides regular expressions that are compatible with Perl.
The match succeeds if the regular expression matches any part of the first