wblock at wonkity.com
Thu Oct 26 03:36:05 UTC 2006
On Wed, 25 Oct 2006, Jack Stone wrote:
> I have managed to piece together a shell script that is able to retrieve the
> domains from the spams of the day and summarize those in a special file that
> can then be added to the sendmail's rejects in the access.db. But, first I
> have to eyeball the list and remove any obvious good-guy domains.
> I would like to create another list of those same good guys that can be added
> to each day as they show up, then compare it to the above main list and
> delete the good guy domains before adding to the access.db.
Greylisting will be much more effective than this approach, and is
easier to implement. Combine that with sbl-xbl and maybe a few other
DNSBLs, add greet_pause of five or ten seconds, and you have much more
effectiveness with less false positives and much less maintenance.
Adding clamav rounds out the whole thing. I wrote an article that
covers some of this:
-Warren Block * Rapid City, South Dakota USA
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