#!/bin/sh
# mx --- find MX hosts for a host name
# Author: Noah Friedman <friedman@splode.com>
# Created: 1999-07-24
# Public domain

# $Id: mx,v 1.1 1999/07/24 10:21:49 friedman Exp $

justone=
case "$1" in
  -1 ) shift; justone='1!d' ;;
esac

dig "$1" mx \
 | sed -n -e '
       /^;; ANSWER/{
         :l
         n
         /^;;/q
         /^'"$1"'\..*MX/!b l
         s/.*MX[ 	]*//
         s/\.$//
         p
         b l
       }' \
 | sort -n \
 | sed -e 's/.*[ 	]//' \
       -e "$justone"

# mx ends here.