From: Dean Anderson <dean(_at_)av8(_dot_)com>
(Sorry if I got the attribution wrong - confusing bad quoting and
top-posting going on)
It has been reported that AOL is already using SPF to give reduced
filtering to SPF-using domains. Is this a good idea?
On its own - no.
Fortunately, it's not what they're doing - they're using SPF for
exactly what it was intended - as part of their reputation system.
They use SPF to confirm that a mail purporting to come from an
organisation on their whitelist is not forged.
Domain on whitelist + SPF Pass = less filtering.
Peter