Hello!
Am 26.06.05 schrieb Jeroen Massar:
http://www.mail-spf.org/ Which has quite some up-to-date info.
There is a lot of political and rare technical discussions on the net. I found a nice discussion while Googeling: http://www.gossamer-threads.com/lists/spf/deployment/13622
I was not able to find a usable howto for understanding Sender-Id or creating a working environement. Usually, I don't need more then half a day to understand a new technology - but Sender-Id takes more time ;-)
As long as no one has written a "cookbook" for implementing Sender-Id, only Hotmail users will be able to create Hotmail compliant mails. So: Who cares?
Beat