DKIM signing enables you to digitally "sign" your emails on their way out of your server in such a way that recipients who have signed up for DKIM can verify the authenticity of the message.
Creating DKIM Record for Cakemail
Publish the following DKIM record on your DNS:
Note: Where “dkim” at the beginning of the record is your DKIM selector. Replace domain.com with your own domain name.