On Tue, 24 Jul 90 16:09:44 O Eric Thomas said: >>This would require more overhead, >More importantly, how is LISTSERV@FOO supposed to know that LISTSERV@BAR >sent you the same posting for another list they have down there and that >it knows basically nothing about? Whenever a posting with more than one LIST-address is received the following actions have to be taken: a) Regardless of peers the mail is fanned out to every LISTSERV indicating that there's another one (two,...,n) postings with identical content on it's way. b) The postings are held at the target LISTSERVs until all identical postings have been received. c) The list of final recipients is built so that only a single copy is sent to an individual. If there is no recipient then the posting is simply discarded. Of course this works only on backbone sites since it must be determined if multiple To: addresses refer to lists or individuals. Well ... ? (don't take it too serious !!) Another solution: If the original Message-ID is preserved a smart MUA can sort out duplicates. Serious stuff: I always wanted an option (maybe in the subject as for semi-moderated list) to indicate that I do NOT want the posting to be archived ... (like this one). Christian