DomainKeys is a deprecated email authentication system designed by Yahoo to verify the domain name of an email sender and the message integrity.

Aspects of DomainKeys (DK), along with parts of Cisco's Identified Internet Mail (IIM), were combined to create DKIM (DomainKeys Identified Mail) which provides more security and flexibility.

For more details on DKIM please click on the button below.

For more details on Email authentication protocols please click on the button below.

Create a free OnDMARC account to view your DKIM functionality.

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