#!/bin/bash

ALIASESDB_STAMP=/var/lib/misc/postfix.aliasesdb-stamp

make_aliasesdb() {

        if [ "$(/usr/sbin/postconf -h alias_database)" == "hash:/etc/aliases" ]

        then

                # /etc/aliases.db may be used by other MTA, make sure nothing

                # has touched it since our last newaliases call

                [ /etc/aliases -nt /etc/aliases.db ] ||

                        [ "$ALIASESDB_STAMP" -nt /etc/aliases.db ] ||

                        [ "$ALIASESDB_STAMP" -ot /etc/aliases.db ] || return 0

                /usr/bin/newaliases

                touch -r /etc/aliases.db "$ALIASESDB_STAMP"

        else

                /usr/bin/newaliases

        fi

}

make_aliasesdb