STIGQter: STIG Summary: Microsoft Exchange 2016 Mailbox Server Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

Exchange must provide Mailbox databases in a highly available and redundant configuration.

DISA Rule

SV-228410r612748_rule

Vulnerability Number

V-228410

Group Title

SRG-APP-000435

Rule Version

EX16-MB-000670

Severity

CAT II

CCI(s)

• CCI-002385 - The information system protects against or limits the effects of organization-defined types of denial of service attacks by employing organization-defined security safeguards.

Weight

10

Fix Recommendation

Update the EDSP to specify how Exchange Mailbox databases use redundancy.

Add two or more Mailbox servers to the database availability group.

Check Contents

Review the Email Domain Security Plan (EDSP).

Determine if the Exchange Mailbox databases are using redundancy.

Open an Exchange Admin Center.

Navigate to and select Microsoft Exchange >> Microsoft Exchange On - Premises <server.domain> >> Organization Configuration >> Mailbox.

In the right pane, if two or more Mailbox servers are not listed, this is a finding.

Vulnerability Number

V-228410

Documentable

False

Rule Version

EX16-MB-000670

Severity Override Guidance

Review the Email Domain Security Plan (EDSP).

Determine if the Exchange Mailbox databases are using redundancy.

Open an Exchange Admin Center.

Navigate to and select Microsoft Exchange >> Microsoft Exchange On - Premises <server.domain> >> Organization Configuration >> Mailbox.

In the right pane, if two or more Mailbox servers are not listed, this is a finding.

Check Content Reference

M

Target Key

4223

Comments