Files
selfpost/docs/plans/dmarc-reports.md
T
mix 1cf8bfcbe2
test / test (push) Has been cancelled
docs: rewrite security/operator docs for the multi-user panel (P2)
The CSRF ADR, guide.md, architecture.md route table, the internal/backup
package comment, roadmap/dmarc-reports admin.dmarc_report_email references,
the e2e coverage summary, and the setupManager/store package comments still
described the pre-1.2.0 single-administrator panel or stale implementation
details. Closes P2 of docs/plans/code-review.md; no behaviour change.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 16:15:14 +03:00

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1.7 KiB
Markdown

# 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 the `dmarc_report_email` setting (moved off the old `admin` table into
`settings` by migration `0005`) 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](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](../guide.md); migrations are backward-compatible.
## Risks
- Attack surface of accepting mail (mitigate: strict recipient allow-list).
- Report volume and retention (mitigate: caps + pruning).