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inbound-antispam-panel: inbound journal milter on port 25

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Step 3/12 of docs/plans/inbound-antispam-panel.md.

The panel serves a second milter while the inbound relay is on
(internal/milter/inbound.go, socket INBOUND_JOURNAL_MILTER_SOCKET,
default /run/selfpost/inbound-journal.sock). build/postfix-config.sh
puts it last on port 25, after the optional antispam milter, with
default_action=accept; postfix-wrapper.sh waits for its socket. At
end-of-message it writes one inbound_spam_log row per recipient at an
inbound domain - other port-25 recipients (DMARC report addresses) get
none - and always accepts. With a filter attached it reads the verdict
from X-Rspamd-Action and X-Spamd-Result (action, score, up to six
weighted symbols, only what the patterns recognise, 255 bytes); without
one those headers are the sender's and are not read. The plan named
X-Rspamd-Score, which rspamd does not have.

The antispam compose fragment mounts rspamd/milter_headers.conf into
the sidecar so that it adds the two headers (checked in rspamd 3.11:
both routines exist and remove a sender's own headers of those names).

Store: InsertInboundSpam, IsInboundDomain.

Checked on the test server, uncommitted tree: go vet ./... ok,
go test ./... ok (22 packages), make e2e ok - the relayed message of
inbound_relay_delivers_and_refuses has its journal row (accept by
selfpost) and the DMARC report sent through the same listener has none.

Not yet seen in a real run: a verdict written by rspamd reaching this
milter. The e2e stand has no filter, and the test server's only inbound
domain has no upstream, so it accepts no mail.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
mix
2026-10-11 22:18:14 +03:00
co-authored by Claude Opus 5.5
parent a3cc52d6d4
commit 28ec784ae2
17 changed files with 748 additions and 31 deletions
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docs/roadmap.md
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@@ -30,7 +30,7 @@ in `git log` and [CHANGELOG.md](../CHANGELOG.md).
|---|---|---|---|---|
| preflight | Installation check page (`/preflight`) | candidate | — | [plans/preflight.md](plans/preflight.md) |
| contributing | `CONTRIBUTING.md` | candidate | — | — |
| inbound-antispam-panel | Inbound antispam journal + allow/deny lists | in progress | 2/12 | [plans/inbound-antispam-panel.md](plans/inbound-antispam-panel.md) |
| inbound-antispam-panel | Inbound antispam journal + allow/deny lists | in progress | 3/12 | [plans/inbound-antispam-panel.md](plans/inbound-antispam-panel.md) |
| inbound-quarantine | Inbound spam quarantine (hold / review / release) | candidate | — | [plans/inbound-quarantine.md](plans/inbound-quarantine.md) |
| csrf-tokens | Per-session CSRF tokens on state-changing forms | candidate | — | — |
| template-data-typing | Typed structs for template data instead of `map[string]any` | candidate | — | — |