Duane -
 
    Yes, LISTSERV  looks into the body  of the mail, in  an attempt to
recognize  mail that  may be  looping between  a LISTSERV  list and  a
foreign mailer.  Quite a  few checks were put in as  part of 1.5l, but
they don't apply to your 1.5i  system.  The only pre-1.5l checks I can
recall are that the body must not contain either:
 
   1) "From: <list>";
or 2) "Sender: <list>"
 
where <list> contains:     ({x} means "x is optional")
 
   1) {"<"}<listname>"@"<listnode>{">"};
   2) {"<"}<listnode>"!"<listname>{">"} (for UUCP bigots);
or 3) {"<"}<listname>"%"<listnode>{">"}.
 
    Perhaps you might find an incentive to upgrade to 1.5l in the fact
that  it offers  a new  list keyword,  "LoopCheck =  {Full /  NoBody /
NoToCount}, MAXTO(nnn)".  With LoopCheck=NoBody,  the above checks are
suppressed.
 
Ross Patterson
Rutgers University