Free tool
Build your DMARC record the safe way.
Choose a policy and where reports go, and get the exact TXT record and the name to publish it under. Start with monitoring, then tighten. It runs in your browser: nothing you type is uploaded.
More options
- p=none without a report address changes nothing and shows you nothing. Add an address for aggregate reports.
Your record
- Type
- TXT
- Name / host
- _dmarc
- Value
- v=DMARC1; p=none
Nothing leaves your browser. This runs locally.
If the report address is on a different domain, that domain must publish a record that authorises receiving your reports, or most receivers will skip them. DMARC only works once SPF or DKIM passes and lines up with your From address.
Tired of doing this by hand?
Koltrix generates these records for your domain and checks them live while you set it up. 7 days free, no card.
More free tools: all of them · SPF, DKIM and DMARC explained