If the  majority of your users  have a sophisticated mail  interface, you
should  configure your  local  lists  to have  FULL  headers as  default.
Changing the SHORT  headers designed for PROFS, ALL-IN-1  and PC packages
which just  dump the whole headers  at you without processing  to include
the user-frightening MIME fields is simply not the correct way to address
the problem.
 
  Eric