What is DKIM?
By now you should be familiar with SPF Records and why they are essential to your sender's reputation. However, the SPF Record is part one for basic authentication. Part 2 requires you to add a new CNAME giving you dual authentication which helps improve your delivery success. Most ISP’s will utilize SPF, and DKIM to validate incoming emails. If the email records are not verified, it will most likely end
Delivery March 3, 2021