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Exchange servers must use approved DOD certificates.


Finding ID Version Rule ID IA Controls Severity
V-259649 EX19-MB-000019 SV-259649r942261_rule Medium
Server certificates are required for many security features in Exchange; without them, the server cannot engage in many forms of secure communication. Failure to implement valid certificates makes it virtually impossible to secure Exchange's communications.
Microsoft Exchange 2019 Mailbox Server Security Technical Implementation Guide 2024-01-10


Check Text ( C-63388r942259_chk )
Open the Exchange Management Shell and enter the following command:

Get-ExchangeCertificate | Select-Object -Property CertificateDomains, issuer

If the value of "CertificateDomains" does not indicate it is issued by the DOD, this is a finding.
Fix Text (F-63296r942260_fix)
Remove the non-DOD certificate and import the correct DOD certificates.