Perhaps I'm not seeing something obvious, but I don't see how one is supposed to find the originid of the person who sent a file using LISTSERV's file distribution mechanism. As an end recipient, I only see a file in my reader with an origin of [log in to unmask] And as a postmaster watching files come through, not always reaching their destinations, I see little of who it was that actually sent the files. The particular problem which brings this up is some mail I received from the folks at NDSUVM1 asking me to have our LISTSERV quit sending files to an invalid userid. I can't stop the files, and it seems that I can't even find out who sent them. Following is all I see from LISTSERV: 21Nov1986 08:42:58 Received file (0532) from LISTSERV@CLVM 21Nov1986 08:42:59 From LISTSERV@CLVM: DIST FROM=DD=From ACK=None TO UD104299@ NDSUVM1 NU105451@NDSUVM1 21Nov1986 08:43:04 File "NOV21C-A SUBJECTS" distributed to [log in to unmask] 21Nov1986 08:43:05 File "NOV21C-A SUBJECTS" distributed to [log in to unmask] 21Nov1986 08:43:39 RSCS message: FROM NDSUVM1: USER NU105451 NOT IN CP DIRECTO RY -- FILE (3585) SPOOLED TO SYSTEM I can't tell where the files came from, nor can NDSUVM1. The RSCS console is no help. Surely I'm missing something obvious, but I dunno what. Also, how am I to be sure that the files I receive which I think are from ERIC@FRECP11 are really from him and not from someone just dying to run their own execs in my class D LISTSERV machine? --Brick