Mail System Error - Returned Mail

The original message was received at Tue, 5 Jul 2005 12:16:12 +0200 from jml.net [4.110.32.209]

----- The following addresses had permanent fatal errors -----
<lurker@lists.plug.phoenix.az.us>

----- Transcript of session follows -----
... while talking to 191.39.31.38:
550 5.1.2 <lurker@lists.plug.phoenix.az.us>... Host unknown (Name server: host not found)