George Hitz wrote on Friday, December 01, 2006 10:46 AM -0600:
Mea culpa on the wrong IP. Thanks for the clarification.
(that's a real 'duuuuuh')
This hardly registers on the scale. I've done far worse :)
I see that comcast.net has no SPF TXT file but that
gmail.com (my MTA/POP source) does have one - namely:
"v=spf1 redirect=_spf.google.com"
What does this do? and is it of any value to me?
As Gino described, this says to redirect the search for an SPF record to
_spf.google.com and use whatever TXT or SPF record is published there.
That SPF record happens to be a list of IP addresses along with a
softfail. This means that any outbound MTA in that list will match and
generate a SPF pass, and if none of them matches, the result will be
softfail. In general, this is a good result.
However, it's not clear what service you use to send mail. You
mentioned Comcast, gmail and outbound.mailhop.org, which belongs to
Sprint. To create a SPF record that describes your outgoing mail setup,
you need to list all the services through which you submit outbound mail
*that use your domain in the return-path*.
--
Seth Goodman
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