FTC Email Authentication Summit
gal1264 writes "The FTC is hosting an email authentication summit today and tomorrow in Washington, DC conveniently happening at the same time as the IETF meeting in the same town. Today mainily was comprised of an overview of the various outstanding proposals. It was interesting to see the whole crowd cheer as the Yahoo representative reiterated that their proposal was full open, much unlike the recent Sender-ID proposal which caused great furor in the IETF MARID working group as well as the open source community. It does seem however, that all of the participants were excited to be testing various techniques (personally I found the Bounce Address Tag Validation very compelling) and were communally comitted to converging on the most effective solutions without anything other than defensive patent structure."
I see at least five proposed systems on that page, and I'm sure there are others in existence. It's usually good to have a variety of things to choose from, but it seems like it will be difficult to get any one system fully accepted when there are various different advantages and disadvantages associated with each, especially since some people have already decided on SPF, Domainkeys, or other options.
It's quite convenient that almost any mailserver speaks SMTP, but I wonder how long it will take before every mailserver uses the adopted sender authentication system.