I agree with the comments below. Lsoft should update the program by coding the Primary Owner (first owner), as the one that approves any changes made to the header by other co owner, or at least that sort of flexibilty. To say rely simply on TRUST does'nt cut it. We need it coded in the program. This should be useful and easy to implement by Lsoft program writers. DMM Morais > I also want to protect the List header from sabotage or hostile co-owners > that may become vengeful and delete all subscribers or other menacing > changes. >>You can't do it. All listowners have equal powers regarding the list's header .. so if you put someone on who wants to delete you from the header .. s/he can do it with ease. Although by definition the Primary Listowner [first owner in header] is the one responsible to the listserv system ... s/he has no way of protecting that position. Sorry ... you either have to maintain the list yourself.. which is really no great deal [by the way filter= really doesn't work well enough to mess with .. too many free web email addresses out there and even the stupidist newby knows it] or take your chances with a co-owner you really do trust [or who is afraid of you] :)>>>>