Free tool

DMARC checker

Look up your DMARC policy alongside SPF, MX and common DKIM selectors. Review the findings before changing DNS. No email or signup required.

Reading your results

What does this DMARC checker inspect?

It looks up DMARC, SPF, MX and DKIM keys at common selectors. Custom DKIM selectors may be missed. The results describe DNS configuration, not the authentication of a sent message.

Is p=none a valid policy?

Yes. It requests no special treatment for a DMARC failure. Gmail accepts p=none for its bulk-sender DMARC requirement; other sending requirements still apply.

What does the score mean?

It summarizes the checks using fixed weights. Read each finding to understand what needs attention. The score is not a prediction of inbox placement.

When should I check again?

Check after changing DNS or a sending provider. Pro runs daily configuration checks and sends email updates when those checks detect an issue.

Reviewed 22 September 2026. Sources: Google sender guidelines · DMARC policy definitions

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The full audit adds TLS, reverse DNS and IP blocklist checks.

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