SPF and DKIM Setup for Register.com
Log in to Register.com. Hover over Domains, then click the Manage.
Choose Manage next to the domain name that you want to update.
Go to Advanced Technical Settings and click Edit TXT Records (SPF).
To create a new SPF record, follow the instructions below.
Note: if you already see a TXT record with a value beginning with 'v=spf1' then edit that record rather than adding a new one.
Leave the Host Name field blank.
Enter the SPF record that we recommend for you into the TXT Record field. You can find your recommended SPF record from the Sender Domains page in your SMTP2GO App.
If you are interested, take a look at some more detailed information about SPF records here.
Click on the Continue button.
To create a DKIM record, Go to the Advanced Technical Settings and click the Edit Domain Aliases Records.
Enter the Hostname we recommend into the box to left of your domain.
Enter the value that we advise for your CNAME record into the box right of points to.
Click on the Continue button. On the next page, click on the Continue button again to save the changes.