DMARC policy is inherited from a parent domain
URGENTWhat it means
example.com publishes no DMARC record of its own. Receivers are applying the policy found at example.org, which someone else controls and can change or remove without telling you.
How to fix it
Publish your own record at _dmarc.example.com with your own reporting addresses, so you control the policy and can see your own mail.
Check your own domain
This page describes the condition. To find out whether your domain has it, run the DMARC test or the full checkup, which examines every record at once.
Understand it properly
This page covers one condition. For the whole picture, The DMARC guide, from a first record to enforcement, or start at the Health Library.
Where this comes from
We judge this against RFC 9989 section 4.10.1. Every finding on this site cites the specification behind it so you can check the work rather than take our word for it.
Other DMARC conditions
DMARC_POLICY_INHERITED
Every fix on this site is yours to implement. If you would rather someone did it, I take this work directly.