mix
ec4d4b9faa
Phase 5 code is complete, committed (b2692e4) and verified on the server.
Everything at SelfPost's boundary is proven (auth, sender binding, no open
relay, valid DKIM signing, delivery to the recipient MX over TLS). The one
open item — the receiver accepting the message into its inbox — is gated by
mc.mixfed.ru's DNS cache / own-domain policy, not a relay defect; a background
loop retries until it lands.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
SelfPost
Self-hosted outbound SMTP relay with a web control panel, shipped as a single
Docker image. Postfix + OpenDKIM + a small Go panel run together under
supervisord; the panel manages multiple sending domains, per-domain DKIM keys
and SASL-authenticated applications bound to their domain.
SelfPost sends mail straight to the internet from your own IP, with DKIM signing, and is configured once through the panel. It is outbound only — it does not receive mail, provide mailboxes, or offer webmail.
Status: under active development. See docs/specification.md for the full requirements and docs/implementation-plan.md for the phased build plan.
Requirements (site prerequisites)
SelfPost assumes the host already provides the conditions for sending from your own IP — an unblocked outbound port 25, a static IP, configurable PTR/rDNS and a reasonable IP reputation. Providing these is the operator's job, not a feature of SelfPost. Detailed deployment docs land in a later phase.
Repository
- Primary: https://codeberg.org/mix/selfpost
- Mirror: https://github.com/mixeme/selfpost
License
AGPL-3.0. The AGPL closes the "SaaS loophole": if you run a modified version as a network-accessible service, you must make the modified source available to its users — not only when you distribute copies of the code.