DMARC record checker.
DMARC is the policy on top of SPF and DKIM. We look up _dmarc.<domain>, parse every tag, and tell you in plain English whether your policy actually protects the domain or only watches it fail.
Since February 2024, Gmail and Yahoo require bulk senders (5,000+ messages/day) to publish a DMARC record. Microsoft followed with stricter enforcement in mid-2025. A policy of p=none satisfies the bare minimum but provides no protection — anyone can still spoof you. p=quarantine sends fails to spam; p=reject drops them.
Green: p=reject (or p=quarantine with pct=100) and rua configured. Amber:p=quarantine or partial enforcement (pct<100). Red: no record, or p=none.