Sorry to follow up to my own message; I discovered when setting up rtg.ietf.org's mailman setup that putting DEFAULT_NEW_MEMBER_OPTIONS = 0 in mm_cfg.py will turn off the "nodupes" option for new lists. It'll still be on by default for existing lists, and existing subscriptions. Bill _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf