Exchange antimalware agent must be enabled and configured.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-259694 | EX19-MB-000146 | SV-259694r1015276_rule | Medium |
| Description |
| Microsoft Exchange 2019 offers built-in antimalware protection for messages going through the transport pipeline. When enabled, the default settings are configured to automatically update. Exchange's built-in Malware Agent is not designed to address all malicious code protection workloads. This workload is best handled by third-party antivirus and intrusion prevention software. Sites must use an approved DOD scanner. Exchange Malware software has a limited scanning capability and does not scan files that are downloaded, opened, or executed. |
| STIG | Date |
| Microsoft Exchange 2019 Mailbox Server Security Technical Implementation Guide | 2024-08-22 |
Details
| Check Text (C-63433r942394_chk) |
| Open the Exchange Management Shell and run the following cmdlets: Get-TransportAgent "Malware Agent" If the identity "Malware Agent" is not set to "Enabled", this is a finding. |
| Fix Text (F-63341r942395_fix) |
| Open the Exchange Management Shell and run the following command: & $env:ExchangeInstallPath\Scripts\Enable-AntimalwareScanning.ps1 This will automatically enable the anti-malware agent. After the script completes, run the following cmdlet to complete the process: Restart-Service MSExchangeTransport This may take up to 10 minutes to take effect. |