[Exim] SPF

Any thoughts about the SPF stuff that AOL are pushing. See
http://spf.pobox.com/

There is a patch for exim available from
http://spf.pobox.com/exim4.spf.acl-2.03.txt

Has anybody used this. It sounds like an awfully good idea, but I would
like to know how widely it is likely to be accepted.
Ron
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Ron McKeating
Senior IT Services Specialist
Internet Services and Software Solutions
Loughborough University
01509 222329