er - we are running LISTSERV 1.8b - 'postmaster' is in the 'default' filter list. If LISTSERV checks both FROM and SENDER for ID POSTMASTER, does that not mean that ALL LISTSERV installations will reject all commands & postings from this site ? Nathan ??? - mike - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >The Sender: header-field should only be used by mailer-deamons and other >programs to return error-messages concerning delivery and the like. Your >mailing-list software should use the From: header or (if present) the >Reply-To: header as the subscriber's address. > >So, if your subscriber makes a mistake in the syntax or format of the >command th mailing-list robot should use the Reply-To: or From: header to >return an error message. > > >-- >Maurice Hendrix INTERNET:[log in to unmask] ARM Powered > > Newton didn't invent gravity... > >...The Blue Wave packets are not in the main computer.