On Wed, Jun 20, 2012 at 11:11:57AM +0200, Ralf Hildebrandt wrote: > I recently saw Exim reject/not deliver mail based on this old, expired draft: > http://tools.ietf.org/html/draft-delany-nullmx-00 > > What ever became of that one?
It never became a standard, but it is "practiced" informally. I
think it was a fine idea that got overshadowed by its more ambitious
(and in my view largely futile) cousins: SPF and DKIM.
--
Viktor.
