Tripp,
TC> A policy for authorizing a given message to be transported by a given
TC> agent cannot be sufficiently expressed by a single domain in many
TC> cases. The PRA "algorithm" is a means to derive a single pointer to an
TC> expression of policy. As such, the chances that a receiver can
1. The underlying problem that you are reacting to has to do with having
the entity that is posting a message be the one to authorize the path
the message follows.
2. What PRA does is to formalize a reality: there is only one entity
that did the latest posting of the message. All of the other fields
that might be present and refer to a poster refer to entities that are
not relevant to the CURRENT transmission.
d/
--
Dave Crocker <dcrocker-at-brandenburg-dot-com>
Brandenburg InternetWorking <www.brandenburg.com>
Sunnyvale, CA USA <tel:+1.408.246.8253>