DMARC Checker Tool

DMARC (Domain-based Message Authentication, Reporting & Conformance) builds on SPF and DKIM to help domain owners protect against spoofing and phishing. It allows you to publish a DNS policy that tells receiving servers how to handle messages that fail authentication and where to send aggregate reports.

This DMARC checker looks up your domain's DMARC record, parses each tag, and validates policy structure against the standard. It highlights configuration issues, alignment risks, and opportunities to move toward stronger enforcement so you can improve domain protection and email deliverability.