Somebody is sending as you, and it is being delivered

What it means

N messages (N% of everything in these reports) carried example.com in the From address, failed DMARC outright, and were delivered anyway, across N sending sources you have not authorised. Every one of those landed in an inbox wearing your name.

How to fix it

Identify each source in the table below. Authorise the ones that are yours by adding them to SPF and signing them with DKIM; then move your policy to p=quarantine so the rest stop arriving.

Check your own domain

This page describes the condition. To find out whether your domain has it, run the RUA 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, including how reporting works, or start at the Health Library.

Where this comes from

We judge this against RFC 9989 section 4.4. Every finding on this site cites the specification behind it so you can check the work rather than take our word for it.

Other RUA conditions

• You are ready to turn enforcement on
• Some of this is forwarded mail, not an attack
• Unauthenticated mail is getting past your policy
• Your policy stopped forged mail
• Your own mail is failing authentication
• Reports are arriving, but nothing is being stopped