The mailin option should also be set to 'off' to prevent non-members from sending messages to the list, but I suspect it is on most lists. I suppose the only other protection is for list owners to turn off the option that allows people to subscribe themselves to a list. Then all subscription requests must go through the owner. This might be sufficient to put off most spammers who join, send their spam, and then leave again. But it makes more work for list owners, so it's not a change to be made lightly! (speaking as a mailbase list owner myself). Best wishes, Adrian At 11:18 20/03/00 +0000, you wrote: >The spammer also got into Academic Registrars mailbase, which DOES have >this option switched off! >John Adrian Tribe <[log in to unmask]> Web Editor, Birkbeck College, University of London %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%