A Tour through the SPAM Fighting State-of-the-Art

I've been a postmaster of a self-hosted email service for more than twenty years now. During that time, I've had three priorities towards my users:

• Making sure that the emails my users send out get delivered.
• Employing a minimalist, yet effective strategy to fighting incoming SPAM.
• Protecting my users' privacy.

Delivering on this promise has become exponentially harder over the years. In this post, published on the Public Exposure Blog, I document a toolchain I ended up using to meet my priorities as a service provider.