j4n 17ffc803d0 dovecot: add multi-dist/Debian trixie support
- Install .debs via apt-get install instead of dpkg+fix-broken
- Package hashes are now keyed by (arch, codename, pkg):
  - download.delta.chat uploads now go to dovecot/{distro}/{version}/
  - GitHub release packages get a _{distro}.deb suffix to allow for
    combined releases.

Tests:
- updated to support this and add a test to check for the unsupported
  release version case
- fix make_host to accept extra args from Command fact
- assert single apt-get install command
2026-07-27 16:55:07 +02:00
2025-12-18 09:21:19 +01:00

Chatmail relays for end-to-end encrypted email

Chatmail relay servers are interoperable Mail Transport Agents (MTAs) designed for:

  • Zero State: no private data or metadata collected, messages are auto-deleted, low disk usage

  • Instant/Realtime: sub-second message delivery, realtime P2P streaming, privacy-preserving Push Notifications for Apple, Google, and Huawei;

  • Security Enforcement: Only connections with strict TLS are accepted; all messages must be correctly signed with DKIM and OpenPGP-encrypted with minimized metadata. There are experimental exceptions for no-DNS relays, which are allowed use self-signed TLS certificates and which do not need to DKIM-sign their messages. Unencrypted messages are allowed in neither case.

  • 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

https://chatmail.at/doc/relay

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