It is my understanding that LISTSERV observes case sensitivity for whatever is to the left of the @ because some mail systems reject addresses with the wrong case in that area of the address. Open to correction if I'm wrong. However, from practical experience in working with a list I've found that for some commands case matters and for others it doesn't. I can't recall which are which as to this as I long ago adopted the policy of entering addresses *exactly* as given in the list or as shown on the person's email. That way I don't have to worry about it. ;-) Douglas Winship Austin, Texas [log in to unmask] Secondary AUTOCAT Listowner