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Exchange must have anti-spam filtering configured.


Finding ID Version Rule ID IA Controls Severity
V-259628 EX19-ED-000142 SV-259628r942198_rule Medium
Originators of spam messages are constantly changing their techniques to defeat spam countermeasures; therefore, spam software must be constantly updated to address the changing threat. A manual update procedure is labor intensive and does not scale well in an enterprise environment. This risk may be mitigated by using an automatic update capability. Spam protection mechanisms include, for example, signature definitions, rule sets, and algorithms. Exchange 2019 provides both anti-spam and anti-malware protection out of the box. The Exchange 2019 anti-spam and anti-malware product capabilities are limited but still provide some protection.
Microsoft Exchange 2019 Edge Server Security Technical Implementation Guide 2024-01-10


Check Text ( C-63367r942196_chk )
The site should use an approved DOD scanner as Exchange Malware software has a limited scanning capability.

If an approved DOD scanner is not being used, this is a finding.
Fix Text (F-63275r942197_fix)
Following vendor best practice guidance, install and configure a DOD approved scanner.