[ale] anti email-spoofing efforts in practice?

[greg.freemyer at gmail.com (Greg Freemyer)]

All,

Of SPF, SIDF, and DKIM what is the best protocal to actually use today
to authenticate emails?  ie. Which is most widely in actual use by
random email recipients?

=== Details
I'm trying to help a client prevent having spoofed emails sent under their name.

I've found this very informative white paper that describes available
technologies:
http://www.maawg.org/about/publishedDocuments/MAAWG_Email_Authentication_Paper.pdf

(Worth the read if you're interested)

Basically it describes SPF, SIDF, and DKIM but it does not give any
real world info, and for each of these protocols you have to have both
the sender and recipient implement the protocol for it to do anything.

Greg
-- 
Greg Freemyer
Litigation Triage Solutions Specialist
http://www.linkedin.com/in/gregfreemyer
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