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Security Free · no signup

DMARC / SPF / DKIM Checker

Check DMARC, SPF, and DKIM DNS records for any domain to assess email authentication and prevent spoofing.

Updated May 24, 2026

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What is DMARC / SPF / DKIM Checker?

The DMARC/SPF/DKIM Checker analyzes email authentication DNS records for any domain. It checks for DMARC, SPF, and DKIM policies and provides a security score showing how well the domain is protected against email spoofing and phishing attacks.

Use cases

Email deliverability — ensure your domain has proper authentication to avoid spam folders
Security auditing — check if your domain is protected against email spoofing
Vendor assessment — verify that business partners have proper email security
Domain migration — confirm email authentication records are correctly configured after DNS changes
Compliance checking — many regulations require proper email authentication

Key features

DMARC record lookup with policy analysis (none, quarantine, reject)

SPF record validation with mechanism parsing

DKIM selector checking (common selectors: default, google, selector1, selector2)

Overall email security score (0–100)

Actionable recommendations for improving email authentication

Frequently asked questions

DMARC (Domain-based Message Authentication, Reporting, and Conformance) is an email authentication protocol that tells receiving servers what to do with emails that fail SPF or DKIM checks.

A 'reject' policy is the strongest, telling servers to reject unauthenticated emails. 'Quarantine' sends them to spam, and 'none' only monitors without taking action.

DKIM records are stored under specific selectors. The tool checks common selectors (default, google, selector1, selector2), but your domain may use a custom selector.