I have managed to collect several addresses on the three lists that I manage that generate the following error mesage: "Last error: 553 5.1.1 unknown or illegal user". These folks no longer show up when I "review" the lists and my attempts to "delete/quiet delete" them results in a message which essentially says that it can't be done because they are not members of the list. If anyone has any insights into a procedure for deleting this type of 'ghost' member I would really appreciate hearing from them. Cheers Dan (CANGEORG, CAGWESTE, CAGLIST)