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
I have an email address listed as a hard bounce, but I know it is valid. What happened?
If an email was blocked by a spam filter on the recipient's end, it could cause it to come back as a hard bounce. This spam filter could be in the company firewall, the ISP/data center, or the subscriber's own computer. A valid email address that has been marked as a "hard bounce" can be removed from your contact list and re-added to erase the history of bouncing. If
Reports November 6, 2018