STIGQter: STIG Summary: Microsoft Exchange 2019 Edge Server Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 30 Jan 2025:

The Exchange Simple Mail Transfer Protocol (SMTP) IP Allow List Connection filter must be enabled.

DISA Rule

SV-259624r961161_rule

Vulnerability Number

V-259624

Group Title

SRG-APP-000261

Rule Version

EX19-ED-000138

Severity

CAT II

CCI(s)

• CCI-001308 - Automatically update spam protection mechanisms on an organization-defined frequency.

Weight

10

Fix Recommendation

Open the Exchange Management Shell and enter the following command:

Set-IPAllowListConfig -Enabled $true

Check Contents

Open the Exchange Management Shell and enter the following command:

Get-IPAllowListConfig | Select-Object -Property Name, Enabled

If the value for "Enabled" is not set to "True", this is a finding.

Note: "Enabled" set to "True" is the default value.

Vulnerability Number

V-259624

Documentable

False

Rule Version

EX19-ED-000138

Severity Override Guidance

Open the Exchange Management Shell and enter the following command:

Get-IPAllowListConfig | Select-Object -Property Name, Enabled

If the value for "Enabled" is not set to "True", this is a finding.

Note: "Enabled" set to "True" is the default value.

Check Content Reference

M

Target Key

5579