DMARC Checker

Inspect a domain's DMARC policy for email authentication and reporting.

DMARC policy

Checks the _dmarc TXT record used for authentication policy.

Why DMARC is useful

DMARC tells receivers how to handle messages that fail SPF or DKIM checks. It can also send reports about authentication results.

Start with monitoring, then tighten policy once legitimate senders are aligned.

Recommended next steps

Use the full health check when one DNS record is not enough to explain inbox placement.

Read the guides for SPF, DMARC, DKIM, and blacklist cleanup.

Learn how p=none, quarantine, and reject affect domain protection and email delivery.

Compare practical DMARC TXT records for monitoring, gradual enforcement, and strict domain protection.

Start with p=none to monitor results, then move toward quarantine or reject when legitimate senders pass alignment.

A message can pass DMARC through aligned SPF or aligned DKIM. DKIM is usually more reliable when mail is forwarded.