Email authentication and Sender ID in messaging

I was scanning the Technet newly published articles today looking for something on how our new anti phishing feature is going to work when SP2 comes out and I found this article which explains really clearly how sender ID works.  Unfortunately I didn’t find this document in time for the email authentication implementation summit, sorry, but I know a bit more about sender ID.  Still haven’t found anything on the antiphishing technology yet – if you find a link could you add it below please?