Hugh, The difference is whether mail from that list is sent via DISTRIBUTE or not. If it is, then there will be only one To: address per mail file, and the mail will come from LISTSERV@<some LISTSERV close to CUA>. If it isn't, then there will be up to 5 addresses per file, and the mail will come from LISTSERV@<peer you're susbcribed to>. Ross Patterson Rutgers University