SPF/TXT records

Michael Milligan milli at acmeps.com
Fri Jun 19 02:54:45 UTC 2009

Jeffrey Collyer wrote:
> M$ has their own take on SPF called Sender ID, which uses a very similar
> record -
> "v=spf2.0" rather than "v=spf1"

To be clear, it's "spf2.0/" plus one of "mfrom", "pra", or "mfrom,pra",
e.g., "spf2.0/mfrom" which is essentially the same as regular SPF.

> so be sure to read up on them both before publishing records for one or
> the other.

SenderID hasn't really caught on mainly because it is of dubious value
over regular SPF, particularly PRA and what it's supposed to buy.  I
wouldn't worry about implementing it... microsoft.com isn't even using
it and they invented it.  ;-)

> http://www.openspf.org/SPF_vs_Sender_ID


Michael Milligan                                   -> milli at acmeps.com

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