Hi, I am the list admin for [EMAIL PROTECTED] Below is the error message I got. There is a problem posting to the list. I have been the list admin for 1 year, this is the first time this problem occurs. Please help me or direct me to the right help source. Thank you, Mandy Sha [EMAIL PROTECTED] Publicity/Public Relations Community Fellow International House of Chicago ---------- Forwarded message ---------- Date: Tue, 6 Feb 2001 20:12:29 -0600 (CST) From: Mail Delivery Subsystem <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Returned mail: see transcript for details The original message was received at Tue, 6 Feb 2001 20:12:29 -0600 (CST) from [EMAIL PROTECTED] [128.135.12.7] ----- The following addresses had permanent fatal errors ----- <[EMAIL PROTECTED]> (reason: 550 5.1.1 <[EMAIL PROTECTED]>... User unknown) ----- Transcript of session follows ----- ... while talking to listhost.uchicago.edu.: >>> RCPT To:<[EMAIL PROTECTED]> <<< 550 5.1.1 <[EMAIL PROTECTED]>... User unknown 550 5.1.1 <[EMAIL PROTECTED]>... User unknown ------------------------------------------------------ Mailman-Users maillist - [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/mailman-users