Reporting-MTA: dns; mail-in.namezero.com
Arrival-Date: Sun, 20 May 2001 15:13:44 -0700 (PDT)

Final-Recipient: rfc822; thok.net_AT_namezero.com
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; host
    inbound.namezero.com.criticalpath.net[209.228.14.51] said: 550 User unknown