I'm not an SPF or DNS expert, but I am pretty good at logic.
SPF is a failure. The forgot the key component that would have made it
work... registration with a central database. The way it stands anybody can
create any valid SPF record they choose. Spammers can create them just as
easily. Since there's no checking against a central database it makes the
whole thing worthless in my opinion.
About the only thing SPF does is increase DNS traffic.
You can't count SPF failure against a message or you'd be blocking a LOT of
valid messages.
You can't accept SPF pass as anything good. A LOT of spam passes SPF.
Just my humble opinion. It was a good idea that they stopped short of
making useful.
-Joe
----- Original Message -----
From: "Marc Funaro" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, December 20, 2005 7:21 AM
Subject: [IMail Forum] An update on SPF
Hi Everyone,
I've been out of the loop for a while, but would now like to ask the imail
community -- is the SPF-worth-it debate settled down? Is it worth the
time
now to set up SPF records, and is it reducing spam? We have about 100
domains, and setting up SPF for all of them will be time consuming, but if
it is now implemented and used by enough ISPs/etc., we have the time and
resources to do it at this point. Just looking for opinions... But let's
not turn this into a flamefest or anything :)
Thanks for your time,
Marc
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