> Currently the organizations distribution list is over 61,000 subscribers. > The TOC is sent out once a week. Daily I get 20 email bounces with an > error report. Weekly I get over 500 email bounces with an error report The > majority contain the following error is "permanent fatal error". > > What is the best method for dealing with the bounce backs? > Going through them manually takes hours. > Here is what the deletion is set to in the list header > * Auto-Delete=Yes,Semi-Auto,Delay(0) I would change it to: * Auto-Delete= Yes,Full-Auto,Delay(5),Max(100) With this setting you will not get any bounced messages. LISTSERV keeps track of "fatal" errors per subscriber it can interpret. Non-fatal errors like "mail box full" will be discarded. If it detects any fatal errors (per subscriber) they will show on a daily error report sent to you. If a subscriber has a fatal error 5 days in a row, they will be auto-deleted and you will be notified. If they have over 100 fatal errors any time within the 5 days they will be deleted also, it's whichever comes first. So depending on the volume of your list, you may want to adjust the 100.