17 Dec
2003
17 Dec
'03
11:17 p.m.
* 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.