Messages in this thread |  | | Subject | Re: VGER does gradual SPF activation (FAQ matter) | From | David Woodhouse <> | Date | Tue, 13 Jun 2006 10:05:06 +0100 |
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On Mon, 2006-06-12 at 23:00 -0400, Horst von Brand wrote: > > Greylist those who have not subscribed. > > That is not easy to do.
It's fairly trivial with a decent MTA. I use all kinds of conditions to trigger greylisting -- HTML mail, 'Re:' in subject with no References:, lack of reverse DNS or CSA on the sending host, >=0.1 SA points, etc. Adding "is not subscribed to the mailing list they're trying to post to" should be trivial.
-- dwmw2
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