How Can ISPs, Net Admins Fight Spam?


Scan for Open Relays & Proxies on your network: AOL will block your network otherwise!

Block proxy ports at the firewall

Audit webservers for FormMail or other web-to-mail scripts

Spamtraps reporting to network blacklists: Razor, DCC, Pyzor

Run SpamAssassin or SpamAssassin Pro! ;)