Here is a sample of the continuing returned mail from the Fractint list. I have no idea of what is being returned. I have been receiving the identical letter every day for several days. Does anyone out there know anything about what is going on? Jim M. START RETURNED LETTER-------------------------------- Return-Path: <MAILER-DAEMON@arkion.es> From: "Mail Delivery System" <MAILER-DAEMON@arkion.es> To: "Jim Muth" <jamth@mindspring.com> Subject: Undelivered Mail Returned to Sender Date: Wed, 10 Sep 2003 17:00:55 +0200 X-MSMail-Priority: Normal Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is the Postfix program at host smtp-01.servidoresdns.net I'm sorry to have to inform you that the message returned below could not be delivered to one or more destinations. For further assistance, please send mail to <postmaster> If you do so, please include this problem report. You can delete your own text from the message returned below. The Postfix program <fractint@mailman.xmission.com>: host 217.76.128.71[217.76.128.71] said: 550 unknown user <fractint@mailman.xmission.com> (in reply to RCPT TO command) Attachment Converted: C:\MIND\EUDORA\DOWNLOAD\Deliver1.dat START ATTACHMENT--------------------------------------- Reporting-MTA: dns; smtp-01.servidoresdns.net Arrival-Date: Wed,10 Sep 2003 16:59:48 +0200 (CEST) Final-Recipient: rfc822; fractint@mailman.xmission.com Action: failed Status: 5.0.0 Diagnostic-Code: X-Postfix; host 217.76.128.71[217.76.128.71] said: 550 unknown user <fractint@mailman.xmission.com> (in reply to RCPT TO command) END ATTACHMENT-------------------------------------