If you use MailerLite for your newsletter, you’ll need to go through a process called domain authentication in order to send newsletters.
Start by reviewing MailerLite’s instructions for authenticating your domain. Please note that you will need to use the manual authentication method.
When you reach the step asking you to add records to your dashboard (“You’ll get the Name and Value fields for the DKIM and SPF records of this domain. Keep this page open.”), open the DNS Records page in your Author Websites dashboard. (Access this page from your dashboard by navigating to Settings > DNS Records).
You’ll be able to enter the CNAME and TXT records specified in your MailerLite dashboard into your DNS records page to complete the authentication process. It can take up to 24-48 hours for your records to propagate.