John,
As things stand now, one could read the draft as saying "for
most email purposes, a forward lookup is sufficient; for
other purposes, you may need to do an SPF evaluation against
the HELO domain name" in which case SPF would be compatible
with, and even a part of, the CSV concept.
JL> Try though I might, I cannot read it that way.
Creative interpretation of one's writing is always helpful for
learning how to strengthen it against misunderstanding.
d/
--
Dave Crocker <mailto:dcrocker(_at_)brandenburg(_dot_)com>
Brandenburg InternetWorking <http://www.brandenburg.com>
Sunnyvale, CA USA <tel:+1.408.246.8253>, <fax:+1.866.358.5301>