[sebast...@alita:~]$ host 220.231.127.15 15.127.231.220.in-addr.arpa domain name pointer localhost.this is your dns error, it does not make senseYou are correct, but the problem is not in Sebastian's DNS - it is in the rDNS of the IP that contacted his MTA.
Not quite the same thing, but I've just had some mail bounce from a domain which has 127.0.0.1. as its only MX record. Makes it quite difficult to send mail there!
Anthony -- www.fonant.com - Quality web sites
