MT.1151 - Email Scanning should be enabled.
Overview
Verify that email scanning is enabled for Exchange queues protection.
Disabled email scanning allows malware to enter through Exchange message queues.
Remediation action:
- Open Microsoft Endpoint Manager > Endpoint Security > Antivirus
- Edit the relevant Microsoft Defender Antivirus policy
- Enable Allow Email Scanning
If your antivirus settings are split across several policies, this setting only needs to be set in one of them, as long as that policy is assigned to every device that needs it. No other assigned policy should set a different value: Intune does not merge this setting, so a device that receives both values may end up with either one, or none.
Related links
- Policy merge and conflicts for Antivirus policy settings
- Configure Microsoft Defender Antivirus
- Microsoft Endpoint Manager
Test Metadata
| Field | Value |
|---|---|
| Test ID | MT.1151 |
| Severity | Medium |
| Suite | Maester |
| Product | Defender |
| Related products | Intune |
| Feature | Endpoint antivirus |
| Area | Devices and endpoints |
| Resource type | Policy |
| User impact | Low |
| Implementation cost | Low |
| MITRE ATT&CK | T1566.001 Spearphishing Attachment |
| Supports controls | nist-800-53-r5:SI-3 |
| PowerShell test | Test-MtMdeEmailScanning |
| Services | Graph |
Source
- Test:
tests/maester/defender/Test.MT.1151.ps1 - Documentation:
tests/maester/defender/Test.MT.1151.md