In <4295E19E(_dot_)2040900(_at_)aol(_dot_)com> Carl Hutzler
<cdhutzler(_at_)aol(_dot_)com> writes:
BTW, this issue of allowing someone to send through "someone else's
relay" is a problem for ALL email authentication approaches except
perhaps CSV and BATV.
SRS/SES/BATV/ABBS have key distribution key distribution problems
similar to DK/IIM when end users try to send through someone else's
MTA.
I think that if there was an easy solution, someone would have thought
of it many years ago. What we have is a bunch of different solutions
which require different changes to the current email environment to
work. Which one you think is best often depends on your assumptions
about the costs and benefits of each solution.
-wayne