Re: [exim] Innovative Host Blacklisting Idea

Marc Perkel wrote:

>>
>>
> It's been running for about 7 hours now and I've added about 15% to the
> size of my blacklist. I've been looking up some of these IPs on dnsstuff
> and about 1/2 of them aren't listed anywhere else. I've has 145152 hits
> on it in the las 7 hours.
>
> One think to keep in mind is that it's a low CPU cost to detect spam
> bots as compared to running it through spamassassin which is the more
> common method and I think this is going to be 100% accurate for the
> hosts it collects. And it's going to be faster at detecting spambots. I
> think that if this data were fed from many big sources that spambots
> could be detected much faster.
>
> Also - this is powering my public hostkarma blacklist so it's an early
> warning for those who are using it. I'm getting bots listed far faster
> than spamhaus.

Now, suppose that I am a mail administrator having some problems to
deliver mails to @perkel.com. If I try to telnet from my mailserver to
your listed MX on port 25 to try to diagnose the problem, will you
blacklist my legitimate mailserver because I connected to your fake MX?