> > Not only is greylisting fine from a protocol point of view (as others > > have pointed out), the IETF is also well aware of it. This is about to > > become an RFC: > > http://tools.ietf.org/html/draft-ietf-appsawg-greylisting > > That's a marked improvement over what appeared to be the status only a > few years back. I still don't quite see why they left the crucial parts > of RFC5321 as ambigous as they had been in the predecessor, but a > greylisting RFC on the standards track is a very welcome development.
whatever. it is still false to say that greylisting wasn't permitted by the original RFC's. it was, and it is.
