Tool 2 of the deliverability monitoring pair (Tool 1 = mail_reputation_monitor).
DMARC rua reports from dozens of operators (Google, Yahoo, Comcast, Cox, Bell,
Mimecast, Cisco ESA, GMX, mail.com, ...) were landing in ops@ (dmarc@ was a DL),
burying real mail and never parsed. Now ingested + queryable:
- dmarc@performancewest.net converted DL -> dedicated Carbonio mailbox; isolated
IMAP creds in server .env, surfaced to workers in docker-compose.yml (mirrors
OPS_IMAP_*). 29 historical reports moved ops@ -> dmarc@ via IMAP.
- scripts/dmarc_report_parser.py: IMAP fetch unseen -> decompress .gz/.zip/.xml
(namespace-agnostic: classic + urn:ietf:params:xml:ns:dmarc-2.0 GMX/mail.com) ->
parse aggregate XML -> upsert dmarc_report (keyed (org_name,report_id), no-op on
re-parse) + dmarc_record per source IP. dmarc_pass = dkim_aligned OR spf_aligned.
Marks \Seen. --dry-run/--all/--alert (7d per-IP summary + Telegram if one of OUR
IPs <95% pass, or EXTERNAL IP sends >=20 failing msgs as us = spoofing under
p=reject). psycopg2 imported lazily so --dry-run runs without the driver.
- api/migrations/102_dmarc_aggregate.sql: dmarc_report + dmarc_record tables.
- infra/cron/pw-dmarc-parser: 06:20 UTC daily --alert (after reputation, before scrub).
- docs/deliverability.md: DMARC section DONE; query examples.
Verified: dry-run --all parses all 28 reports (1 non-report test probe), 0 unknown
after the namespace fix.
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