Phil, regardless of whether you create a new RFC2001 that replaces RFC822
or a  RFC2010 that expands it,  just because the standard  was registered
does NOT force  mailers to comply to it. Only  those mailers that pretend
to  support these  new RFCs  will be  committed to  support it  FULLY and
UNAMBIGUOUSLY. Those which prefer to  keep supporting RFC733 will be free
to do  so. But  it's easier to  try to persuade  people to  improve their
mailers when you have  a RFC at hand than when  you're only talking about
st*nking extensions  required for  brain-damaged IBM software  to coexist
with normal mailers written as God meant mailers to be written :-)
 
  Eric