Best Practices and Guidelines for Anti Spam

1. Check Sender Authentication: Organizations should block email with malformed headers.
2. OCR Reorganization
3. Use Anti Relay Systems
4. URL Detection
5. Implement Rate limits on Outbound Email Traffic
6. Create Honey Pot Signatures
7. DNS Lookup
8. Use Anti Spam Solutions
9. Follow a Layered Approach in Anti-Spamming
10. Provide Legitimate Outlets for Marketers
11. Do Not Reply to email scam
12. Ensure proper server configuration
13. Utilize filters
14. Limit the Volume of email received ( Rate limiting at Destination Server)
15. Destroy all outbound emails relayed through open server
16. Don’t Allow Mail Server to Relay email from 3rd Parties
17. Deny outgoing TCP Access to Internet on Port 25
18. Monitor formmail.pl and other cgi applications
19. Detect and Quarantine compromised computers
20. Apply Blacklisting/white listing Methods