SPF/RBL/SpamAssassin is a great combo.

I merely flag with SPF and SpamAssassin right now, but I actively
reject based on the ORDB RBL. I've also added some custom SpamAssassin
rules to watch for the SPF flags, and adjust the score accordingly. If
you're interested, I can provide them.

On Thu, 16 Sep 2004 10:40:25 -0600, Andrew Niemantsverdriet
> I am doing a major upgrade to our mail server and I am looking for
> recommendations for programs and qmail patches to limit the amount of
> spam that gets through. What are you guys using that has great success?

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