Anita Cohen-Williams wrote: > I have just gotten an error message from my LISTSERV stating that someone > tried to sign on with an unknown domain. The information to the right of the @ > are all numbers (i.e. 192.245.137.1). The host postmaster doesn't recognize > this and neither do I. I deleted the user since it will spawn countless error > messgaes. Has anyone else run across this sort of thing before? A reverse nameserver lookup shows that the message came from the metronet.com domain. ;; ANSWERS: metronet.com. 604800 MX 0 feenix.metronet.com. ;; ADDITIONAL RECORDS: feenix.metronet.com. 604800 A 192.245.137.1 /BoK -------------------------------------------------- Bo Kleve Mail: [log in to unmask] Linkoping University Phone: +46 13 281761 Sweden Fax: +46 13 284400