CMMC 1.0 Practice SI.3.219 Requirement:

Implement email forgery protections.

CMMC 1.0 SI.3.219 Requirement Explanation:

Sender Policy Framework (SPF) specifices which servers are allowed to send email from your domain (@mycompany.com). Domain Keys Identified Mail (DKIM) verifies the authenticity of an email message to a recipient. Domain-based Message Authentication, Reporting, and Conformance (DMARC) combines SPF and DKIM by specifying policies.

Example CMMC 1.0 SI.3.219 Implementation:

Implement SPF, DMARC, and DKIM on your email domain (e.g. @mycompany.com).

CMMC 1.0 SI.3.219 Scenario(s):

- Scenario 1:

Your company uses Office 365 Exchange for its email services. You visit Microsoft's website and follow the guidance for enabling SPF, DKIM, and DMARC.
 

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