I seem to have a pretty annoying problem. for some strange reason, an owner of a discussion group that I house, has YAHOO internet address and for some reason, everything that she posts get returned to her with an unknown list message. I have no problems sending mail to her address and she has no problems mailing to my domain. any clues as to why this is happening? thanks. Brian ______________________________________ Brian T. Mc Namara [log in to unmask] Project Manager Asst. Manager Computer Operations Listserv Administrator Jewish Theological Seminary of America 212.678.8000 x8126 ______________________________________