Set up and verify DNS records
To set up SPF and/or DKIM:
2.In the SPF/DKIM and DMARC column, you can see which senders have a valid signature.
3.Navigate to the relevant sender and click Set up SPF/DKIM.
4.On the SPF tab or the DKIM tab, copy and paste the necessary information to your domain's DNS records.

Note
It takes between 30 minutes to 48 hours before you can move to the next step.
5.Go to your DNS management system and check that the DMARC TXT record has been added.
6.Click Verify DNS records.
A domain verification check of the sender email address is performed. If the domain's DNS records cannot be verified, an error message will be displayed.