#!/usr/bin/perl -w
use strict;
use Net::DNS;
my $dns = new Net::DNS::Resolver;
for my $domain( @ARGV ) {
my $mx = $dns->query( $domain, 'MX' );
print "content-type:text/html; charset=utf-8\n\n";
print "$domain:\n\n";
foreach my $rr ($mx->answer) {
print "
", $rr->exchange, ' [', $rr->preference, "]\n";
}
}