Arlene, It sounds like you got your problem with your list header(s) fixed. If not, *please* let some other listowner help you with it, even if it means a temporary co-listowner. I know I've offered and imagine others have also. Filter him, set your lists confirm for subscription or by_owner, Send= Editor, Editor=you,(listname), if he's always coming through the same com or edu set all subs at those places REVIEW now that you have 1.8b (a pain for you and the inoccents at those sites, but this guy seems a certifiable anarchist, as far as your lists are concerned). Set your lists Notify if they aren't already so you know when he pops up again. Use any and every technique to block him, short of putting out a contract on him, though imagine at times you are sorely tempted. ;-) Douglas Douglas Winship Hays County, Texas [log in to unmask] Secondary AUTOCAT Listowner MEDLAB-L