Reporting-MTA: dns;mta-2.ms.rz.RWTH-Aachen.de (tcp-daemon) Original-recipient: rfc822;stephenj@cs.pdx.edu Final-recipient: rfc822;stephenj@cs.pdx.edu Action: failed Status: 5.1.1 (Remote SMTP server has rejected address) Remote-MTA: dns;rcpt.cat.pdx.edu (TCP|134.130.7.73|56392|131.252.208.107|25) Diagnostic-code: smtp;550 5.1.1 ... User unknown