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

Exchange must provide redundancy.

DISA Rule

SV-259640r961632_rule

Vulnerability Number

V-259640

Group Title

SRG-APP-000439

Rule Version

EX19-ED-000234

Severity

CAT I

CCI(s)

• CCI-002418 - Protect the confidentiality and/or integrity of transmitted information.

Weight

10

Fix Recommendation

Update the EDSP to reflect the Exchange servers used for redundancy.

Configure and subscribe to two or more Edge servers for load balancing.

Check Contents

Review the Email Domain Security Plan (EDSP).

From a Mailbox server in the subscribed Edge Subscription site, determine if the Exchange servers are using redundancy by entering the following command:

Get-EdgeSubscription

If the value returned is not at least two Edge servers, this is a finding.

Vulnerability Number

V-259640

Documentable

False

Rule Version

EX19-ED-000234

Severity Override Guidance

Review the Email Domain Security Plan (EDSP).

From a Mailbox server in the subscribed Edge Subscription site, determine if the Exchange servers are using redundancy by entering the following command:

Get-EdgeSubscription

If the value returned is not at least two Edge servers, this is a finding.

Check Content Reference

M

Target Key

5579