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Posted to users@spamassassin.apache.org by "David F. Skoll" <df...@roaringpenguin.com> on 2011/10/07 21:50:29 UTC

Suppressing backscatter (was Re: Blacklisting based on SPF)

On Fri, 07 Oct 2011 20:47:48 +0100
Martin Gregorie <ma...@gregorie.org> wrote:

> And, at least for me, its been good for suppressing backscatter: since
> I've had a good SPF record I've has almost none.

Really??  You are very lucky.  We have an SPF record with a "-all"
clause and still get backscatter.  I believe that so few SMTP servers
validate SPF that the amount of backscatter it actually reduces is tiny.

Regards,

David.