Since the problem with the attached message is in the cc header,
it seems like LISTSERV could have replied to the sender with an
error message.
 
== Forwarded Mail ==
 
Received: from LIST.NIH.GOV by NIHCU (Mailer) id 7259;
              Wed, 08 Feb 95  09:06:22 EST
Received: from LIST.NIH.GOV by LIST.NIH.GOV (Mailer R2.10 ptf000) with BSMTP id
 7258; Wed, 08 Feb 95 09:05:09 EST
Date:         Wed, 8 Feb 1995 09:05:09 -0500
From:         BITNET list server at NIHLIST (1.8a) <[log in to unmask]>
Subject:      Problem processing mail file from $MAILER@NIHLIST
To:           [log in to unmask],
              Roger Fajman <[log in to unmask]>,
              Thomas Mason <[log in to unmask]>
 
Error occurred while processing file 7257 from $MAILER@NIHLIST: "Command
mailfile contains invalid RFC822 fields and could not be parsed".
 
RFC822 parser messages follow:
 
<W> Incorrect or incomplete address field found and ignored.
 
------------------- Message causing the problem (19 lines) --------------------
Received: from NIHLIST by LIST.NIH.GOV (Mailer R2.10 ptf000) with BSMTP id
 7256; Wed, 08 Feb 95 09:05:06 EST
Received: from dino.conicit.ve by LIST.NIH.GOV (IBM VM SMTP V2R2) with TCP;
   Wed, 08 Feb 95 09:04:45 EST
Received: by dino.conicit.ve (4.1/SMI-4.1/RP-1.2)
        id AA06930; Wed, 8 Feb 1995 10:04:59 -0400 (AST)
From: [log in to unmask] (Ofc. Rel. Internacional)
Message-Id: <[log in to unmask]>
Subject: SUSCRIBENIHTOC-L
To: [log in to unmask]
Date: Wed, 8 Feb 1995 10:04:59 -0400 (AST)
Cc: ORI
X-Mailer: ELM [version 2.4 PL21]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8bit
Content-Length: 70
 
" SUSCRIBE NIHTOC-L Oficina de Relaciones Internacionales de CONICIT"