Free domain tool

SPF & DMARC checker

Inspect the email authentication records published by any domain.

Authentication records

What this checks

SPF tells receiving servers which systems are allowed to send mail for a domain. DMARC tells receivers how to handle messages that fail authentication and can also define reporting behavior.

This tool reports whether records are present and shows the published TXT values. It does not score policy quality or guarantee deliverability.

More email DNS diagnostics

Use the SPF record checker or DMARC record checker for focused lookups, the DKIM record checker when you know a selector, or run the combined email DNS health checker for MX, SPF and DMARC in one report.