Reclaiming the Inbox with
Open Source Tools for Email Systems

Sean Reifschneider

tummy.com, ltd.

Introduction

What:

Why?

Terminology

How to block it

Techniques: Content-based

Techniques: Connection-based

Techniques: Others

Greylisting

DNSBL

Black/White List

SPF

DomainKeys/DKIM

Distributed Checksums

Bayesian/Learning

Anti-virus

Hashcash

Tagged Message Delivery Agent/Confirmation

Rules

SpamAssassin

Combination Approach

Put Users in Control

Conclusion

Thanks for Attending