Exchange must have anti-spam filtering enabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-259627 | EX19-ED-000141 | SV-259627r961161_rule | CCI-001308 | medium |
| Description | ||||
| 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. 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. | ||||
| STIG | Date | |||
| Microsoft Exchange 2019 Edge Server Security Technical Implementation Guide | 2024-12-06 | |||
Details
Check Text (C-259627r961161_chk)
Review the Email Domain Security Plan (EDSP) for an installed anti-spam product.
Note: If using another DOD-approved anti-spam product for email or a DOD-approved Email Gateway spamming device, such as Enterprise Email Security Gateway (EEMSG), this is not applicable.
Open the Exchange Management Shell and enter the following command:
Get-ContentFilterConfig | Format-Table Name, Enabled; Get-SenderFilterConfig | Format-Table Name, Enabled; Get-SenderIDConfig | Format-Table Name, Enabled; Get-SenderReputationConfig | Format-Table Name, Enabled
If any of the following values returned are not set to "True", this is a finding:
Set-ContentFilterConfig
Set-SenderFilterConfig
Set-SenderIDConfig
Set-SenderReputationConfig
Fix Text (F-63274r942194_fix)
Open the Exchange Management Shell and enter the following command for any values that were not set to True:
Set-ContentFilterConfig -Enabled $true
Set-SenderFilterConfig -Enabled $true
Set-SenderIDConfig -Enabled $true
Set-SenderReputationConfig -Enabled $true