Is there any way to deny or bounce mail sent to a domain whose MX record
points to 127.0.0.1? Here's an infamous example:
% nslookup -type=mx nypc.org
Server: nautilus.shore.net
Address: 207.244.124.104
Non-authoritative answer:
nypc.org preference = 10, mail exchanger = nypc.org
% nslookup nypc.org
Server: nautilus.shore.net
Address: 207.244.124.104
Non-authoritative answer:
Name: nypc.org
Address: 127.0.0.1
Mail to this domain would normally freeze on the spool for eternity. Is
there any way to remedy this?
