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Without version tracking, if a new image requires the install stage (e.g. new package versions), the default configure,activate will skip it and potentially fail silently. At build time, the git hash is written to /etc/chatmail-image-version. At runtime, setup_chatmail_docker.sh compares it against the persisted /home/.chatmail-running-version (survives container restarts via the /home volume). If they differ, the install stage is automatically prepended to CMDEPLOY_STAGES. After a successful deploy, the running version is updated. Files: docker/chatmail_relay.dockerfile:68-69, docker/files/setup_chatmail_docker.sh:27-48
Chatmail relays for end-to-end encrypted email
Chatmail relay servers are interoperable Mail Transport Agents (MTAs) designed for:
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Zero State: no private data or metadata collected, messages are auto-deleted, low disk usage
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Instant/Realtime: sub-second message delivery, realtime P2P streaming, privacy-preserving Push Notifications for Apple, Google, and Huawei;
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Security Enforcement: only strict TLS, DKIM and OpenPGP with minimized metadata accepted
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Reliable Federation and Decentralization: No spam or IP reputation checks, federating depends on established IETF standards and protocols.
This repository contains everything needed to setup a ready-to-use chatmail relay on an ssh-reachable host. For getting started and more information please refer to the web version of this repositories' documentation at