D DKIM Domain-Based Message Authentication, Reporting, and Conformance What it does: Combines SPF and DKIM results and tells the receiver what to do if an email fails the checks. Jack Zagorski Sep 27, 2025 What it does: Adds a digital signature to your emails so the receiver can check if the email really came from your domain. How it works: Your mail server signs the email with a private key, and the receiver checks the signature using a public key stored in your DNS. Why it matters: Makes sure your email content is authentic. D