I recently found the enclosed mail from LISTSERV in my reader.  It's
not clear to me what really happened to cause this.  I hope someone
on the list with more experience can give me some perspective.
In particular, is there something I should modify or set to help
prevent further problems?
------------------- Excerpt from console log --------------------------
PUN FILE 7930 FROM MAILER   COPY 001   NOHOLD
28 Oct 1990 00:33:16 Processing file (7930) from MAILER@HARVARDA
28 Oct 1990 00:33:17 From cwaisman%ucsd.edu@SDSC: To whom it may concern:
28 Oct 1990 00:33:17 To   WHOM@SDSC: Unknown command -- "IT". Try HELP.
28 Oct 1990 00:33:18 Sent information mail to cwaisman%ucsd.edu@SDSC
28 Oct 1990 00:33:18 Sent information mail to WHOM@SDSC
 
--------------------------- Mail from LISTSERV --------------------------
 >Received: by HARVARDA (Mailer R2.07) id 7231; Sun, 28 Oct 90 11:13:25 EST
 >Date:         Sun, 28 Oct 90 11:13:24 EST
 >From:         Revised List Processor (1.6e) <[log in to unmask]>
 >Subject:      Delivery error notice sent to LISTSERV
 >To:           [log in to unmask]
 >cc:           [log in to unmask]
 >
 >The enclosed  mail file, found in  the LISTSERV reader and  shown under the
 >spoolid 7933 in the console log, has been identified as a possible delivery
 >error notice for the following reason: mail  origin seems to be a mailer or
 >mail-daemon.
 >
 >------------------------- Message in error (37 lines) ------------------------
 >Received: from Sdsc.BITnet by HARVARDA.BITNET (Mailer R2.07) with BSMTP id
 > 7228; Sun, 28 Oct 90 11:13:23 EST
 >Date:     Sun, 28 Oct 90 06:29:35 GMT
 >From:     [log in to unmask]
 >Subject:  Undeliverable Mail
 >To:       [log in to unmask]
 >Comment:  reason for return --
 >Comment:   Invalid address[es]
 >Comment:  the affected addresses follow ...
 >Comment:  WHOM
 >
 >Start of returned message
 >
 >  Received: from HARVARDA.BITNET by Sdsc.BITnet with BSMTP via BITNET ;
 >        Sun, 28 Oct 90 06:14:09 GMT
 >  Received: From HARVARDA(MAILER) by SDSC with Jnet id 9453
 >            for MAILER@SDSC; Sun, 28 Oct 90 06:14 GMT
 >  Message-Id: <[log in to unmask]>
 >  Received: by HARVARDA (Mailer R2.07) id 7142; Sun, 28 Oct 90 00:33:18 EST
 >  Date:         Sun, 28 Oct 90 00:33:18 EST
 >  From:         Revised List Processor (1.6e) <[log in to unmask]>
 >  Subject:      Output of job "cwaisman%ucsd.edu" from cwaisman%ucsd.edu@SDSC
 >  To:           [log in to unmask]
 >
 >  Command replies from cwaisman%ucsd.edu@SDSC are being forwarded to you.
 >  > it may concern:
 >  Unknown command -- "IT". Try HELP.
 >
 >  All subsequent commands have been flushed.
 ...(Statistics, etc. omitted)
-------------------------------------- End ------------------------------
Thank you in advance for any enlightenment.
   -Hobart Braden