DMARC decides what recipients do with mail that fails SPF or DKIM, and sends reports about who is sending on behalf of your domain. This tool reads your DMARC record and shows every tag.
What this tool does
The tool fetches the DMARC record from the underlying _dmarc subdomain, shows every tag (p, sp, pct, rua, ruf, adkim, aspf) and judges whether your policy enforces or only monitors.
How to use it
Enter the domain name and run the check. You get advice to safely move from monitoring (p=none) to quarantine or reject.
Input and output
- Input: a domain name
- Output: the DMARC record, every tag with an explanation and advice on the policy level
Limitations
The tool reads the published policy; it does not process incoming DMARC reports (rua/ruf). Analysing those reports requires a separate processor.
Good to know
Always start with p=none and a rua address so you receive reports without blocking mail. Only move to quarantine or reject once the reports show that all your legitimate senders align correctly.