I believe so, via the * LOOPCHECK keyword, but never having done so myself: *************************************************************** * Loopcheck= Full | None | Noorigin | Nobody | NoCRC | NoSpam * *************************************************************** Determines the type of loop checking performed by LISTSERV to avoid perpetuating mail loops. The default is "Loopcheck= Full". No doubt the LSTOWN-L archives will review the subtleties of this approach. My only question is how will the recipient know that it is NOT a duplicate message? I mean if I got 10 messages that said EVERYTHING IS OK I'd start to wonder if everything was REALLY OK ;-) /Pete "OK" Weiss at Penn State, not at Oklahoma ;-)