What Is DKIM?

DomainKeys Identified Mail (DKIM) is a protocol that contributes to DMARC compliancy and allows a company to take responsibility for sent messages that can be verified by mailbox providers. Essentially, it enables the outbound domain to digitally sign email to provide legitimacy for the recipient. In conjunction with SPF, DKIM will significantly increase your email delivery rates, and setting it up for your domain is a requirement to become DMARC compliant.

Key Benefits

• Authenticates the sender: Proves the email genuinely came from your domain.

• Protects message integrity: Ensures the message wasn’t tampered with in transit.

• Reduces spoofing and phishing: Makes it harder for attackers to impersonate your domain.

• Improves deliverability: Builds trust with mailbox providers and keeps legitimate emails out of spam.

How DKIM Fits Into Email Security

DKIM is one part of a complete email authentication strategy. It works together with:

• SPF: Validates which servers are allowed to send mail for your domain.

• DMARC: Enforces authentication results and provides reporting to help you monitor and protect your domain.

Together, these standards create a strong front line against email fraud.

For information about DKIM records and how to set up, click here.