The following technical articles may or may not help you achieve some goal.
- How to: SpamAssassin with qmail + Vpopmail + Procmail + SQL
- How to automatically freeze all incoming messages with Exim
- Tools for testing your site
- What do do if you suspect that your computer is infected with a virus, worm, adware, spyware, etc.
- Random Password Generator
- Report: Why Am I Getting All This Spam? (external PDF) [Mirror link to report]
- LiteURL.com - A free URL shrinker by Doug Ledbetter