Select your domain then go to the DNS Records tab.
Click 'Add record' to add a new record.
Select TXT from the Type menu options.
Enter the details for your TXT record:
TTL: Enter the minimum 300 seconds (so that you do not need to wait too long before verifying)
Name: _dmarc
Value: "v=DMARC1; p=none; rua=mailto:rua-import-xxxx@sendforensics.com" [Notes: includes the speech marks, also replace rua-import-xxxx@sendforensics.com with your own unique SendForensics RUA processing address which can be found at Domain settings > DMARC Data.]
Select Create to save your new TXT record.
Wait for at least 5 minutes, then you can verify that you have the correct record entered at Domain settings > DMARC Data.