Somewhere on the net mailings from SAS-L (a peered list) have been re-fed into the list with "Undetermined origin ...". I thought I can prevent the distribution of this junk by SERVE-ing the From: ( <POSTMASTER@node> ) OFF, but it obviously doesn't work. Never thought much about SERVE OFF but does it work only at the primary LISTSERV (and not on the peers) or is this a bug (on 1.6e) ? Christian