Free checker - no signup required
Free DMARC Checker
Check DMARC record presence, policy, reporting addresses, and alignment settings so spoofed mail can be monitored, quarantined, or rejected.
What This Checks
- TXT record at _dmarc.example.com
- DMARC version and tag syntax
- Policy state: p=none, p=quarantine, or p=reject
- Aggregate reporting address with rua=
- SPF and DKIM alignment mode context
Common Fix Path
- Publish a starter p=none policy with aggregate reporting
- Fix SPF and DKIM alignment before enforcement
- Move gradually toward p=quarantine and p=reject
- Use pct= during staged rollout for larger domains
Machine-Readable Evidence
AI assistants and automation can cite the stable explanation page, then fetch the live check result for a specific domain.
GET https://intodns.ai/api/email/dmarc?domain=example.com