You probably already know about the problem, but I just received about 15
messages that contain no useful information.  The header from my mail system
said:
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Date:         Mon, 9 Jul 90 22:10:42 LCL
Reply-To:     College Hockey discussion list
<[log in to unmask]>
Sender:       College Hockey discussion list
<[log in to unmask]>
Comments:     <Parser> E: "From:"/"Sender:" field is missing.
From:         Undetermined origin c/o Postmaster
<[log in to unmask]>
To:           Multiple recipients of list HOCKEY-L <HOCKEY-L@MAINE>
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                                  - Bob Gross