spf-discuss
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Re: Sendmail white paper

2004-12-08 10:29:56
On Wed, 2004-12-08 at 12:17 -0500, Meng Weng Wong wrote:

I've received many spams recently that attempt to phish
ebay.com and paypal.com which do publish SPF records.

They all have a return-path like MAIL 
FROM:<blah(_at_)nospf(_dot_)random(_dot_)com>

but

From: <paypal(_at_)paypal(_dot_)com>

so maybe spammers are checking SPF records and not forging
return-paths for domains that publish.  Hey, if enough
spammers check SPF records, then receivers might never have
to :)

That'd be nice. Then the receivers won't be throwing away valid mail.

Let's hope we can accelerate the process and have it cover SenderID too.
Encourage spammers to start sending MAIL 
FROM:<blah(_at_)nospf(_dot_)random(_dot_)com>
and
        Resent-From:<blah(_at_)nosenderid(_dot_)random(_dot_)com>
        From: <paypal(_at_)paypal(_dot_)com>

... and then people don't even need to start checking SenderID either.
because it obvious now that it's all about the _latest_ hop anyway. We
can revert to just using the HELO name and CSV, since SPF and SenderID
aren't actually buying us anything more useful than that anyway.

-- 
dwmw2


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