Various "roles" can be defined, but perhaps not strictly enforced: 1) full-privs are handled by OWNERS= 2) don't receive mailto=listname-REQUEST@listhost via OWNERS= QUIET:,rfc822_addr 2) receive notification of subscribes and unsubscribes is handled by NOTIFY= 3) errors and bounces ERRORS-TO= 4) editors of postings EDITOR= (and its optional companion MODERATOR= 5) authorized posters if not PUBLIC or PRIVATE: distribution option (SET) NOPOST or EDITOR