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NAME - Perl script to scan MIME messages.

SYNOPSIS [-f filter] dir

DESCRIPTION is a Perl script designed to work with mimedefang(8).  It
       takes a single argument which is a directory which should contain files
       laid out as described in mimedefang(8).


       -f filter
              Specifies  the  name of the file containing the filter.  If this
              option is omitted, the default filter /etc/mimedefang-filter  is

OPERATION  evaluates  the  file  /etc/mimedefang-filter  as  a Perl
       fragment.  This file should define the filter procedure.  For each part
       of  a MIME message, calls filter and disposes of the part
       as instructed by the filter.  The  various  modes  of  disposition  are
       described in mimedefang-filter(5).


       You  are  strongly recommended to test your filter before installing it
       in /etc/mimedefang-filter.  To test the filter, save it in a file (e.g.
       test-filter) and run this command:

   -f test-filter -test

       This tests the filter for syntactic correctness.  If it passes, you can
       install it as a production filter.  (Note that the test tests only  for
       correct  Perl  syntax;  it doesn’t make sure your filter does something


       There are a few other ways to invoke

   -structure < mime_message

       parses a message on stdin and prints lots of debugging information.

   -prettyprint < mime_message

       parses a message on stdin and prints it in a "nice"  format  (depending
       on your definition of "nice".)


       prints  a  list  of  detected  optional Perl modules.  The output looks
       something like this:

            SpamAssassin: yes


       calls the function filter_validate, if it is defined  in  your  filter.
       filter_validate  should  return an integer; this becomes the exit code.
       If filter_validate does not exist, an  error  message  is  printed  and exits with an exit code of 1.

AUTHOR  was  written by David F. Skoll <>.
       The mimedefang home page is


       mimedefang(8), mimedefang-filter(5), mimedefang-protocol(7)