I have been getting this error report daily for about 20 days now. Every day, it shows the error count as "1" for both of these people. The third entry, [log in to unmask] is new to today's report. I've done searches through the subscriber lists for "Walker," "Alice," "Lee," "astound.net" and "feliks." Also, Richard Lee's email address is not always the same in the error reports. Sometimes it is as below, other times it's "[log in to unmask]" Since I can't find these subscribers on my list ([log in to unmask]) and everyday seems like their "first" error, can someone give me some advice on what I can do? Thanks, Cindi ********* The following 3 subscribers are currently being monitored: Err First Last Address --- ----- ----- ------- 1 11/11 11/11 "Alice A. Walker" <[log in to unmask]> Last error: 5.1.1 550 Invalid recipient: <[log in to unmask]> 1 11/16 11/16 "Richard K. Lee" <[log in to unmask]> Last error: 5.1.1 550 5.1.1 <[log in to unmask]>... User unknown 1 11/25 11/25 "Alice A. Walker" <[log in to unmask]> Last error: 5.0.0 X-Postfix; service unavailable Err= Number of delivery errors received thus far First= Date first delivery error was received (mm/dd) Last= Date of most current delivery error (mm/dd) Subscribers will be automatically deleted from the list when delivery errors have been reported for a period of 15 days or more, or when 100 delivery errors have been received, whichever occurs first. Monitoring will cease after 16 days without any reported error. Note: manually deleted subscribers may remain on the monitoring report under an alias address. Such entries will expire eventually; you do not need to do anything about them.