I should have included this section of the bounce notification: SMTP error from remote mail server after initial connection: host mx1.comcast.net [68.87.26.147]: 554 imta23.westchester.pa.mail.comcast.netcomcast 74.115.253.198 Comcast block for spam. Please see http://postmaster.comcast.net/smtp-error-codes.php#BL000000 Bob