# exim filter logfile DIR/spool/log/mainlog logwrite "Filter entered: original_local_part=$original_local_part" logwrite " parent_local_part=$parent_local_part" if $local_part_prefix is "" and $local_part_suffix is "" then logwrite "No prefix or suffix" else logwrite "Prefix=$local_part_prefix" logwrite "Suffix=$local_part_suffix" endif deliver $local_part