Reporting-MTA: mdsc0mds01.prontomail.com Arrival-Date: Wednesday, August 08, 2001 Final-Recipient: rfc822; zxe@lettera.net Action: Failed Status: 5.1.1 (bad destination mailbox address) Remote-MTA: ; c0mds01.prontomail.com Diagnostic-Code: smtp; 550 RCPT TO: User unknown