This is the fifth and final part of a five part tutorial that will show you how to install a full featured email server on your Raspberry Pi. This tutorial covers how to automatically sort spam emails into the spam folder using Dovecot’s Local Mail Transfer Protocol (LMTP) and Sieve rules.

The parts are:

The Introduction & Contents Page (read first)

Raspberry Pi Email Server Part 1: Postfix

Raspberry Pi Email Server Part 2: Dovecot

Raspberry Pi Email Server Part 3: Squirrelmail

Raspberry Pi Email Server Part 4: Spam Detection with Spamassassin

Raspberry Pi Email Server Part 5: Spam Sorting with LMTP & Sieve

Intro

If you followed the previous tutorial, you currently have an email server that automatically scans incoming emails using Spamassassin. However, in its current state, Spam and Ham alike are delivered to the inbox, which is annoying. Since Spamassassin only marks emails based on their spam score, we need to use an external program to handle sorting & delivery.