Mailman

Overview

This skill provides guidance for configuring mailing list servers using Postfix and Mailman3. It covers the complete mail delivery pipeline including inbound mail handling, LMTP integration, subscription workflows, and outbound broadcast delivery to list subscribers.

Architecture Understanding

Before configuring, understand the bidirectional mail flow architecture:

Inbound Flow (Mail INTO Mailman)

1. External mail arrives at Postfix
2. Postfix routes list addresses to Mailman via LMTP
3. Mailman processes: subscriptions, unsubscriptions, and posts