1 Overview

This package extends mailfromd, a powerful mail filtering utility designed for use with mail transport agents supporting the milter protocol (see Mailfromd in Mailfromd Manual).

Mail filtering language (MFL) which is used to program mailfromd, uses POSIX regular expressions (either basic or extended, at the user’s option). Mfmod_pcre extends it by providing support for Perl-compatible regular expressions.

It is written as a loadable module (see Dynamically Loaded Modules in Mailfromd Manual) and requires mailfromd version 8.14.91 or later and pcre2 10.35 or later.

This manual describes mfmod_pcre version 1.1 and discusses its use. It supposes that the reader is sufficiently acquainted with mailfromd and Perl-compatible regular expressions.

For a complete description of mailfromd, refer to Mailfromd in Mailfromd Manual.

For a description of Perl-compatible regular expressions, see https://pcre.org/original/doc/html/pcresyntax.html.