Kyle Quillen wrote:
> Hello All,
>
> I am having an issue once again with high load on my mail servers. What
> I would like to know is there a way in spamdyke that I can block all
> non-us Ips?
>
I take it you're not using spamdyke yet.
There are several rDNS filters, one of which rejects rDNS entries which
contain a CC (Country Code). I'm seeing quite a few hits with this rule, and
with other rDNS filters in general.
Graylisting included with spamdyke is also very effective.
Overall, spamdyke should reduce the load considerably, because everything it
rejects (and it can reject a LOT) is rejected before the message is even
entirely received (only headers are received), so there's no scanning of
these. You might think of spamdyke as RBLs on steroids, at least regarding
its effectiveness. ;)
I highly recommend that QMT users install/use spamdyke.
--
-Eric 'shubes'
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