DMARC records tell receiving mail systems how to handle messages that fail SPF or DKIM checks. They help domain owners define policy, monitor abuse, and improve trust in email delivery.
DMARC builds on SPF and DKIM by publishing a policy for how to treat authentication failures. It also supports reporting so domain owners can monitor issues.
Use a DMARC lookup when improving email security, monitoring spoofing risk, reviewing deliverability, or validating a new business email setup.
Look for a TXT record beginning with v=DMARC1 and review the policy, reporting settings, and alignment instructions.
Common issues include missing policies, invalid syntax, reporting addresses not working, and publishing strict policies before SPF or DKIM is ready.
Once you understand what to look for, run a live check using the tool below.
Launch DNS LookupDMARC is an email policy and reporting standard that helps protect domains from spoofing and unauthenticated mail.
Yes. DMARC depends on SPF and/or DKIM alignment to work properly.
This page explains the purpose of the check, what results mean, and what problems to watch for before you run the live tool.
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