Steve, I have ran mail servers, but I do not currently run one on AMPRNet; my last attempt was to setup a home server was an IPv6-only server for the purposes of passing a certification exam. There are many reasons for not maintaining it (some of which may be why you're having issues, hope this helps): - The domain you're using for email must have an MX record - That MX record must point to a valid A Record (it doesn't have to be the same domain) - Your mail server must be configured with the hostname name noted in the A Record - The IP noted in the A record must have a PTR record that returns the same hostname in the A Record (this can only be done by one of our friendly Brians, this has to be done in 44.in-addr.arpa) also make sure that - you have configured the SMTP server to receive email for the domain in which you created a global MX record entry - make sure that email account exists on the server - if it is multi-homed, make sure the gateway/default route is over 44NET While mail servers should work with the first two, many ISPs configure their servers only to "talk" with mail servers who also have the PTR record in place. -Lynwood KB3VWG