Glossary: Endpoint, Application and Email Security
DKIM (DomainKeys Identified Mail)
Also written: selector._domainkey
An email standard where the sending server signs headers and body with the domain's private key, and receivers check the signature with the public key published in DNS. It detects changed messages and usually survives forwarding.
Where the book teaches it
Related terms
DKIM-SignatureselectorSPF (Sender Policy Framework)DMARC (Domain-based Message Authentication, Reporting, and Conformance)digital signature