Skip to content
Clinic open · free diagnosis, no appointment needed2,000+ domains monitored

Multiple DMARC records

CODE RED

DMARC · Critical · costs 40 points · RFC 9989 section 4.10

What it means

N DMARC records are published at _dmarc.example.com. Receivers require exactly one. Finding several. They apply no policy at all, so you have the appearance of DMARC and none of the protection.

How to fix it

Delete every DMARC record but the one you want enforced. There must be exactly one TXT record at _dmarc.example.com.

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. 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_MULTIPLE_RECORDS

Every fix on this site is yours to implement. If you would rather someone did it, I take this work directly.