> We have a list that contains this keyword, but we still get the bounce. > Any ideas? The headers are > > * Subscription= By Owner > * Errors-To= Owner > * Review= Owner > * Validate= Yes > * Notify= Yes > * > * Send= Owners > * Reply-To= Sender,Respect > * Default-Options= Repro > * Loopcheck= Nobody > * > * Confidential= Service > * Service= local > > and part of the message we get is > > >Your message is being returned to you unprocessed because it appears to > >have already been distributed to the L-ADM-HOSTMON list. That is, a > >message with identical text (but possibly with different mail headers) > >has been posted to the list recently, either by you or by someone else. > > How is this possible? You are using the wrong option, use NoCRC for dupes.