cPanel allows users to create their own SPF and Domain Keys (DKIM) records. SPF and DKIM are tools used by many mail servers in an effort to combat spam, so if you're having an issue with your email being bounced back or arriving in the junk/spam folders of your recipients, it is suggested to enable these settings. Please keep in mind that as these are DNS settings, they may take up to 24 hours before they begin to take effect.
Domain Keys
Domain Keys is an e-mail authentication system that allows for incoming mail to be checked against the server it was sent from to verify that the mail has not been modified. This ensures that messages are actually coming from the listed sender and allows abusive messages to be tracked with more ease.
SPF
SPF will specify which machines are authorized to send email from your domain(s). This means that only mail sent through this server will appear as valid mail from your domain(s) when the SPF records are checked.
How to Implement Domain Keys and SPF Records
SPF Records and Domain Keys can be set within the "Authentication" section of your cPanel. The specific instructions are in the cPanel, and you can also review cPanel's documentation for more details. If you need further assistance, or, if you do not have the "Authentication" icon in your cPanel, please contact Support for further assistance.
NOTE: cPanel may show the following error when setting up your DKIM and SPF records:
Warning: cPanel is unable to verify that this server is an authoritative nameserver for example.com
This is a known bug within cPanel due to the fact that cPanel checks the local server for DNS. Since the local server is not configured to handle DNS queries, the error persists but can be disregarded.
