19 May 1999 Ottawa Canada Hi: Periodically I find a site will say relaying not permitted which can mean the user-id does not exist and the site is too stupid to come out and say so, or more frequently, that the site's mail system is having a rough day and refusing to accept mail for anyone on it due to a sick mail system, or a required file having vanished or something. You could try writing to the postmaster at the site in question but are likely to find even postmaster mail is not being relayed. Interesting that your subscribers on that complaining site are still getting their mail from your list even though their site is saying it is not relaying the mail. Usually these kind of errors get fixed by the site admin at the complaining site sooner or later, but in the meantime they are enough to drive a listowner up the wall and across the ceiling! Good luck. Brian