Earthlink seem to be running a brain-damaged mail server :) The problem is that the user [log in to unmask] has had his internet access cut off, but the server is throwing an error back ostensibly for <all> of the Earthlink users it found in the BSMTP job, even though three of them aren't experiencing any problem at all. If you delete [log in to unmask] from your list this error should stop. Nathan