Isn't it possible for LISTSERV to put a random (large!) number to each DIST job it sends out, and each listserv to keep track of 2-3 day's worth of numbers? If the same number is seen again, DON'T process it? -turgut --------------- internet: [log in to unmask] postmaster, [log in to unmask] bbsturk: (+90)232-369-6428/29 FIDO: sysop@2:430/105 VirtualNet: 1@90232000 http://bbsturk.bbs.tr