Glossary: Security Monitoring and Automation
DKIM (DomainKeys Identified Mail)
Also written: DKIM, dkim=none
An email check in which the sending domain signs its messages so the receiving server can verify them. The fake invoice carried no DKIM signature.
Where the book teaches it
Related terms
SPF (Sender Policy Framework)DMARC (Domain-based Message Authentication, Reporting and Conformance)Authentication-Results