I thought that the policy publication aspect of DKIM
 applied to the handling of UNsigned messages.
 There is the matter of the "third-party signature" authorization which could
 require a policy lookup even for a signed message IIRC.
 --
 Arvel
(offlist)
which part of the spec are you referring to?
offhand, i don't think it's needed.  the policy of delegating to third parties 
is administrative, not protocol-based.  
that is, if i delegate arvel.bbiw.net to you, either it validates under 
bbiw.net 
or it doesn't.  it requires no "policy" publication for others to query.
  d/
  ---
  Dave Crocker
  Brandenburg InternetWorking
  +1.408.246.8253
  dcrocker  a t ...
  WE'VE MOVED to:  www.bbiw.net