TMA-INTUNE-DEFENDER-2.4

Ensure 'Allow Email Scanning' is set to 'Allowed'

MediumLevel 1Automatedintune-defender

Description

This policy setting configures e-mail scanning. When e-mail scanning is enabled, the engine will parse the mailbox and mail files, according to their specific format, to analyze the mail bodies and attachments. Several e-mail formats are currently supported, for example: pst (Outlook), dbx, mbx, mime (Outlook Express), binhex (Mac). The recommended state for this setting is: Allowed. Turns on email scanning.. Audit: reads the registry value(s) behind this Defender policy (HKLM\SOFTWARE\Policies\Microsoft\Windows Defender) and prints compliant only when each satisfies the benchmark value. Policy delivered by Intune only appears here once it has been applied to the device.

How it is checked

Audit method: Windows registry

registry

$bad = @(); $v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\PolicyManager' -Name 'AllowEmailScanning' -ErrorAction SilentlyContinue).'AllowEmailScanning'; if (-not ($null -ne $v -and @(1) -contains [int64]$v)) { $bad += 'AllowEmailScanning=' + $v }; if ($bad.Count -eq 0) { 'compliant' } else { 'non-compliant: ' + ($bad -join ', ') }

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

To establish the recommended configuration via configuration profiles, set the following Settings Catalog path to Allowed. Turns on email scanning.. Defender\Allow Email Scanning To establish the recommended configuration via Endpoint Security Blade: 1. Navigate to Endpoint Security 2. Click Antivirus 3. Click Create Profile 4. Select Windows for the Platform and Microsoft Defender Antivirus for Profile 5. Name the profile 6. Configure Allow Email Scanning to Allowed. Turns on email scanning.

Properties

Operating systems: Any
Tags: intune-defenderintuneregistry
Reference: CIS Microsoft Intune for Microsoft Defender Antivirus Benchmark v1.0.0 - 2.4 Ensure 'Allow Email Scanning' is set to 'Allowed'

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target intune-defender