spf-discuss
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RE: [spf-discuss] SPF enables fully automatic spam filter

2005-10-19 05:47:40
On Wed, 19 Oct 2005, Dan Field wrote:

Yeah... shouldn't the DSN only be sent on a SPF pass?

The DSN is not sent for SPF fail.

I hate bloody backscatter!! 

Then don't publish a neutral policy.

Anyone have any good filtering rules for sorting the good DSN from bad?

Sign the local part of outgoing mail (using SRS, for example, even
when the domain is the same).  Reject DSNs to unsigned addresses
or with invalid signatures.

-- 
              Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.

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