On Mon, 2012-07-23 at 15:10 -0400, Chris Knadle wrote:
> The two greylisting implementations I'm familiar with, greylistd and postgrey,
> don't seem to have any configuration options related to RDNS or SPF. As far
> as I can tell they both operate solely on whether there is already an entry
> for the sender emailing the recipient, otherwise a temporary rejection is done
I'm not sure about greylistd, but my encounters with postgrey have led
me to believe that if there's *anything* you can get wrong when
implementing greylisting, that's the design choice that postgrey will
have made.
cf.
http://wiki.exim.org/SimpleGreylisting
--
dwmw2