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Anti-Spam Techniques

Friday, June 18, 2004
Author: Richard S. Westmoreland
Permalink: 2004061821424811

Anti-Spam

Content-based
- Address Blacklist/Whitelist
- Content filtering
- Bayesian
- URL database
- Challenge/Response
- IBF (intent based filtering)

IP/Host-based
- RBL (realtime blackhole list)
- RPDNS (reverse path dns lookup)
- MX Lookup
- Greylisting

Pattern-based
- DCC (distributed checksum clearinghouse)
- RPD (recurrent pattern detection)
- SLS (statistical lookup service)

Did I miss any? If so, please let me know via the contact form. At a later time I will write articles based on each of the spam catching techniques.

Anti-Spam Techniques
Authored by: Anonymous on Tuesday, July 20, 2004

Looks like you are talking about the CipherTrust Ironmail. If you are have they fixed the problem that causes their appliance to implode?
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Anti-Spam Techniques
Authored by: Webmaster on Wednesday, July 21, 2004

What brought you to the conclusion that the list has anything to do with IronMail other than the fact that the appliance uses some of the techniques in the list?
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