How do I use the DMARC record generator?
- Choose a policy — start with none.
- Enter an address to receive aggregate reports.
- Publish the TXT record on the host _dmarc and check it with our email authentication checker.
DMARC record generator: frequently asked questions
What is DMARC?
A DNS policy that tells receiving servers what to do with mail that fails SPF and DKIM alignment, and sends you reports.
Which policy should I start with?
p=none, to collect reports without affecting delivery. Then move to quarantine and reject.
Is DMARC required?
Gmail and Yahoo require a DMARC record for bulk senders, and it greatly improves protection against spoofing.
Where do reports go?
To the rua address. Reports are XML files; a DMARC reporting service makes them readable.
What is alignment?
Whether the domain in the From address matches the domain SPF or DKIM authenticated. Relaxed alignment allows subdomains.
Where do I publish it?
As a TXT record with host/name _dmarc in your DNS.
Why do results differ from another checker?
DNS and web responses are cached for their TTL and may differ by location. Our checks use Cloudflare’s 1.1.1.1 resolver.
Is the dmarc record generator free?
Yes. It is free with no sign-up and no usage limits for normal use.
Is my data sent to your servers?
No. This tool runs entirely in your browser, so what you type never leaves your device.
Does it work on my phone?
Yes. The tool works in any modern browser on iPhone, Android, tablet or computer.