Okay: "...two other methods for e-mail authentication have been approved by the IESG for publication as "experimental" RFC's..." Mea culpa, - ferg -- "william(at)elan.net" <william@elan.net> wrote:

p.s. Of course, this development comes on the heels of two other methods for e-mail authentication already published by the IETF as "experimental" RFC's: "Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail" and Microsoft's "Sender ID: Authenticating E-Mail".

That is false information. They have not been published as "experimental" RFCs, only approved for publication. Publication may come later and yet may not happen at all. -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg@netzero.net or fergdawg@sbcglobal.net ferg's tech blog: http://fergdawg.blogspot.com/