On Tue, 28 Sep 1993 03:00:42 PDT Richard Karpinski <[log in to unmask]>
said:
 
>If LISTSERV were to put the same address that is used for each recipient
>into each piece of mail it sends out,
 
the SMTP servers and the core sites in general would be out of gas in no
time. Plus it would have to be in the body, as headers are rewritten.
 
  Eric