How to Add a DMARC Record to Your Domain Name DNS

DMARC stands for Domain-based Message Authentication Reporting and Conformance. It is a method, using a DNS TXT record, of authenticating email messages. When you create a DMARC record (referred to as a policy) it tells a receiving email server what to do with a email message after checking your domain's SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) records.

An example record is "v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.co.uk"

The v tag is the version of DMARC.

The p tag lets the receiving email server know what you want them to do with a message that fails authentication. There are 3 choices None, Quarantine or Reject.

The rua tag is the email address you would like the receiving email server to send DMARC aggregate reports to.

There are a total of 11 tags but these 3 will get you a working DMARC record. It is recommend to start with the p tag set to None. When you have checked the reports and happy that emails are getting through you can change the p tag to use Quarantine or Reject.

This article shows you how to add a DMARC record to your domain DNS.

1. Log into your portal at https://www.nuttyabouthosting.co.uk/portal.

2. Click on your hosting plan to take you to your hosting control panel.

3. Click on the 'Domains' option, under the System heading.

4. Click on the domain name you wish to add the DMARC record to.

5. Click the 'Edit DNS Zone Records' button. You may need to click the 'Enable DNS' button if that is there instead and then click the 'Edit DNS Zone Records' button.

6. Click the 'Add Record' button.

7. Select TXT from the Record Type dropdown. Insert '_dmarc' into Record Name field. Add your dmarc record in the Record Data field then click the 'Save' button.

8. Check your DMARC record at MXToolBox DMARC Check Tool.