Glossary

What Is DMARC?

DMARC (Domain-based Message Authentication, Reporting and Conformance) is a DNS-published email policy that tells receivers how to handle messages failing SPF or DKIM checks. It lets domain owners block spoofing of their own domain and receive reports on who is sending mail in their name.

Where this shows up

See it in a live investigation: Grade DNS & email posture.

Go hands-on with the DNS & email recipes.

Workflows that use this

Runnable workflows where this concept does the work.

DNS & Email Security Posture

Find out how easily someone could send mail as you. This grades a domain's email posture end to end — its sender authorisation, reporting setup, signing vendors, and mail servers — and flags the gaps that let attackers spoof your brand or that quietly hurt your deliverability. The one-look email-security health check.

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