Files
selfpost/docs/plans/dmarc-reports.md
T
mix f62fe23826 release: 1.1.0: Domain-admin role and internal/web package split
The first MINOR after 1.0.0: send-only DMARC guidance in the panel, AGPL packaging on every page, and an internal split of `internal/web` ahead of domain-admin work. Upgrading runs one SQLite migration (empty defaults; existing DNS guidance is unchanged until you set a report address).
Changed:
  - `internal/web` split into subpackages (`web/view`, `web/auth`, `web/validate`,
Added:
  - panel: DMARC guidance for send-only relays — the suggested `_dmarc` record
  - AGPL packaging hygiene: [NOTICE](NOTICE) names the copyright holder and the
  - [docs/roadmap.md](docs/roadmap.md) — candidate item **visual-style** (panel

Full detail: CHANGELOG.md (1.1.0).
2026-09-22 15:24:52 +03:00

1.7 KiB

Plan: dmarc-reports

Status: candidate


Goal

SelfPost receives DMARC aggregate reports on SMTP, parses them inside the image, and shows summaries in the panel — pass/fail by source, hints when tighten p= is reasonable. No external DMARC SaaS and no IMAP workflow for the operator.

Scope

In:

  • Inbound SMTP for configured report addresses only (not a general backup-MX).
  • gzip + XML aggregate parsing → SQLite summaries per sending domain.
  • Panel page and/or per-domain section: recent reports, third-party senders, delivery health of report ingestion.
  • Reuse admin.dmarc_report_email and domains.dmarc_rua for DNS templates; when enabled, suggest a SelfPost-hosted report address.

Out:

  • Forensic reports (ruf=).
  • Full dashboards, APIs, email alerting.
  • Mailboxes for people (IMAP/POP3/webmail).

Architecture (sketch)

  1. Receiving MTAs → SMTP to SelfPost (hub MX).
  2. Postfix virtual alias or dedicated listener → panel ingest worker.
  3. Parse XML → dmarc_reports table (domain, reporter, counts, date).
  4. Panel reads SQLite; links from domain DNS card.

May share port-25 plumbing with inbound-relay.md but must remain a separate, opt-in feature that does not forward mail upstream.

Done when

  • Operator can point rua= at an address SelfPost accepts and see parsed summaries in the panel within one reporting cycle.
  • With the feature off, outbound-only behaviour is unchanged.
  • Documented in guide.md; migrations are backward-compatible.

Risks

  • Attack surface of accepting mail (mitigate: strict recipient allow-list).
  • Report volume and retention (mitigate: caps + pruning).