Today's Deep-Dive: nixos-mailserver

Today's Deep-Dive: nixos-mailserver

From Deep Dive by GzEvD mbH

April 21, 2026 · 20 min · Episode 388

About this episode

This episode explores the Simple NixOS Mail Server project and its impact on self-hosting email infrastructure.

In this episode, we take a deep dive into the Simple NixOS Mail Server, an open-source project designed to make one of the most intimidating areas of self-hosting — email infrastructure — far more accessible. Starting with the hidden complexity of modern email, we unpack why running your own mail server has historically been considered a dark art, from SPF, DKIM, and DMARC to Postfix, Dovecot, spam filtering, and the zero-trust barricades required just to prove you are not a spammer. From there, we explore how this project changes the game by combining the declarative power of NixOS with a reproducible, configuration-driven approach that turns fragile server setup into something stable, auditable, and manageable. Along the way, the episode looks at the deeper ideas behind open-source infrastructure, including transparency, peer review, GPL licensing, and data sovereignty. More than just a technical walkthrough, this is a conversation about what it means to stop renting your communications stack from big tech and start owning the fortress yourself. https://gitlab.com/simple-nixos-mailserver/nixos-mailserver https://www.safeserver.de Gain digital sovereignty now and save costs…

Topics covered

  • NixOS Mail Server
  • self-hosting
  • email infrastructure
  • open-source
  • digital sovereignty
  • configuration management

Keywords

  • NixOS
  • mail server
  • self-hosting
  • open-source
  • email security
  • SPF
  • DKIM
  • DMARC
  • digital sovereignty

Mentioned in this episode

Organizations: GzEvD mbH, NixOS, Postfix, Dovecot, GPL, Safeserver, Simple NixOS Mail Server

Places: Germany

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