Spammers

[Lutz Donnerhacke]

* Bill Stewart wrote:
>If you want to cut way down on spam, there's Paul Vixie's
>Realtime BlackHole List service at maps.vix.com.  It uses DNS as a 
>convenient query/response server and some short sendmail scripts
>to block mail from any site known to have an open smtp relay.

I prefer teergrubing. It does increase the realtime costs of spamming. A lot
of professional spammers are teergrube aware and do not spam to such hosts.
Unsecure relays die by a lack of ressources after catched by some
teergrubes, so the admin has to do something to deal with the problem.