Free tool
DMARC record generator
Pick a policy and where reports go, and copy the record. It runs in your browser: nothing is sent anywhere.
Daily summaries from receivers such as Gmail and Outlook. An address at another domain needs that domain's permission to receive them.
Subdomains
Your DMARC record
- Type
- TXT
- Host
- _dmarc
v=DMARC1; p=none
- A domain has one DMARC record, at _dmarc. Replace an old one rather than adding a second.
- DMARC works on top of SPF and DKIM: set those up first, then check all three with the free DMARC checker.
What it checks
How to roll out DMARC
In three steps
- 1. Monitor (p=none)
- Nothing is blocked. Reports show every service that sends as your domain.
- 2. Quarantine
- Once every real sender passes SPF or DKIM, failing mail goes to spam.
- 3. Reject
- Failing mail is refused: the strongest protection against spoofing.
FAQ
Questions, answered
Where do I add the record?+
At your DNS host, as a TXT record with the host _dmarc and the value from this page.
Will p=none hurt my email?+
No. p=none only asks receivers to report; it never blocks or moves your mail.
How do I check it worked?+
DNS changes can take a while to appear. Then run the free DMARC checker on your domain.
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