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DMARC record generator

Generate a DMARC record for a domain and inspect the validation findings.

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Run a check

Your input is sent to the matching public tool endpoint.

Inputs are validated by the API. Public tools are rate limited. Header content is processed in memory.

Your result will appear here.

Run the check to see structured findings, severity, evidence and next steps from the public diagnostics API.

The details

Choose monitoring or enforcement deliberately

Choose monitoring or enforcement deliberately

Use p=none to collect reports while reviewing legitimate senders. Consider quarantine or reject only when report coverage and SPF/DKIM alignment support the change.

Provide a working report destination

Aggregate reports use rua mailto addresses. Confirm the mailbox is configured to receive reports, and follow external reporting authorization requirements when the destination is on another domain.

A result is a point-in-time check

DNS can vary by resolver and change over time. Verify important changes with your DNS provider and mail platform. Public DNS checks cannot see every private report or sending configuration.

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Frequently asked questions

What does the DMARC record generator do?

Generate a DMARC record for a domain and inspect the validation findings.

Do I need an account?

No. This public tool is available without registration.