DMARC Record Checker

Look up a domain's DMARC policy and get it translated into plain English, including whether the policy actually protects anything yet.

How to use

1. Enter the domain in your From address.
2. Press Check DMARC. The record on _dmarc.yourdomain is fetched and every tag is explained.
3. If the policy is none, treat that as monitoring only and plan a move to quarantine once your reports are clean.

Frequently asked questions

The domain has no DMARC record. Does that matter?

Yes. Without one, receivers have no instruction about what to do with mail that fails authentication, and you get no reports about who is spoofing you.

Why does p=none show as unprotected?

None asks receivers to deliver as usual and only send reports. It is the right first step, but on its own it stops nothing.

Does a subdomain inherit the policy?

Yes, unless an sp tag says otherwise or the subdomain publishes its own record.