authentik Deploying Authentik SSO with Azure SMTP and HAProxy: A Complete Guide Setting up a robust Single Sign-On (SSO) solution is essential for modern infrastructure management. In this guide, I'll walk you through deploying Authentik with high availability using Docker Swarm, configuring email notifications, and integrating everything with HAProxy as a reverse proxy. Stephane Thirion 11 Jan 2026 · 7 min read