SpamAssassin, MIMEDefang, and Procmail: Best Trio of 2024

This trio of applications can be combined to manage server-side email sorting in a beautiful and elegant way. They are my “Best Trio,” because resolving the problem I set out to fix—effective server-side email sorting—took three pieces of software working together. Here’s how I got everything to work using SpamAssassin, MIMEDefang, and Procmail–three common and freely available open source software packages.