Brendon Colby wrote:

Greetings,

We have two SMTP servers our customers use. I'm looking for a way to
either throttle back their ability to send e-mail (for the compromised
hosts) or block completely after a threshold. I've looked at
SpamThrottle and the "qmail dynamic blacklister" (which is just a Perl
script that scans the multilogs and blocks IPs if they reach a
threshold). Does anyone use SpamThrottle with qmail-ldap? Any other
thoughts on this?


Much easier in my opinion is to limit number of outgoing SMTP connections using iptables
if you are routing his IP, or incomming connections if he is relaying through your host.
I solved this way problems with one ow my customers. He got limit to 5 smtp connections
per minute (300 emails/hour for 5-persons office is much more than enaugh).


Regards,
Blizbor



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