#!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
export PATH
STATUS_OK="Mail queue is empty"
STATUS=`postqueue -c /etc/postfix -p`
MAIL_INFO=`postqueue -c /etc/postfix -p|grep '@'`
if [ "${STATUS_OK}" != "${STATUS}" ]
   then
      for i in `postqueue -c /etc/postfix -p |grep -P '(\d+\:){2}\d+' |awk '{print $1}'`
    do
      if echo "$i" |grep -vq '*'
         then
            echo "${MAIL_INFO}" >>/opt/mail.log
            sudo postsuper -d $i
      fi
    done
fi

crontab
*/5 * * * *  /opt/mail.sh &> /dev/null