Free DMARC Record Checker
Look up and validate any domain's DMARC record. See parsed tags, check policy enforcement, and get actionable fixes.
DMARC Record
Issues
Recommendations
What is DMARC?
Domain-based Message Authentication, Reporting and Conformance (DMARC) is an email authentication protocol that builds on SPF and DKIM. It tells receiving mail servers what to do when a message fails authentication checks — whether to reject it, quarantine it, or take no action — and provides a reporting mechanism so domain owners can monitor abuse.
A DMARC record is a TXT record published at _dmarc.yourdomain.com that
starts with v=DMARC1 followed by
semicolon-separated tags defining your policy, reporting addresses, and alignment settings.
Tag Quick Reference
| Tag | Description |
|---|---|
| v | Version — must be "DMARC1" |
| p | Policy for the domain (none, quarantine, reject) |
| sp | Subdomain policy (none, quarantine, reject) |
| rua | Aggregate report recipients (mailto: URIs) |
| ruf | Forensic report recipients (mailto: URIs) |
| pct | Percentage of messages subject to policy (0–100, default 100) |
| adkim | DKIM alignment mode — relaxed (r) or strict (s) |
| aspf | SPF alignment mode — relaxed (r) or strict (s) |
| fo | Failure reporting options (0, 1, d, s) |
| ri | Reporting interval in seconds (default 86400) |
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