mix
56a4fa892d
The journal-milter, until now a pure monitor, now refuses a message with a
4xx tempfail (RespTempFail/451) at MAIL FROM when a per-domain or per-
application limit is exceeded. Key is the client IP; the count is
COUNT(DISTINCT queue_id) over a sliding window reusing the send log; the
limit applies only when a non-empty IP binding matches the client (empty
binding => level-1 only, per spec 7.4). Enforcement is fail-open on the
milter's own errors — a limiter malfunction never blocks mail, and Postfix's
level-1 anvil limit stays the independent backstop. Refused messages are
recorded in send_log with status "rejected" for UI visibility.
- store/ratelimits.go: RateLimit type (+Active/AllowsIP), id-keyed get/set/
delete for the panel, name/login-keyed lookup + windowed distinct-message
count for the milter, DeleteRateLimitsForDomain. No migration — the
rate_limits table has existed since Phase 2.
- milter: enforce at MailFrom, fail-open helper overLimit, InsertRejected.
- web: server-side validated IP/ceiling/window forms on the domain page and
per application; routes POST /domains/{id}/ratelimit and
/applications/{aid}/ratelimit. Milter reads rows live, so no reload.
- domain/app services clear limits on deletion (rate_limits has no FK cascade).
Unit tests + container e2e (p8) green: refusal on both scopes, unregistered
IP ignored, fail-open with the panel stopped.
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.