There has been a good and confusing discussion on one of the marketers list recently asking which is supposed to be used spf1? or spf2?
I have always just had people publish an spf1 records for the domains in the return-path (bounce) and FROM (pretty) address and have had nothing negative come of it.
My good friend Matt Vernhout from Thindata posted this to his blog today
-Dennis
Eloqua
Last 5 posts by Dennis Dayman
- European Data Protection "Upgrades" - January 30th, 2012
- Return Path acquires OtherInbox - January 10th, 2012
- How NOT to react to spam complaints - January 9th, 2012
- Care2 breach is something to care about - January 3rd, 2012
- The passing of a great mind and great friend - November 17th, 2011






SPF2 is alive and kicking, but yes, you can use SPF1 records as an entirely safe fallback that is checked more ubiquitously.
As I said on Matt's blog, even the SenderID cache site asks for SPF1 records:
https://support.msn.com/eform.aspx?productKey=senderid&ct=eformts