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

Exchange Mailboxes must be retained until backups are complete.

DISA Rule

SV-228376r612748_rule

Vulnerability Number

V-228376

Group Title

SRG-APP-000231

Rule Version

EX16-MB-000270

Severity

CAT II

CCI(s)

• CCI-001199 - The information system protects the confidentiality and/or integrity of organization-defined information at rest.

Weight

10

Fix Recommendation

Open the Exchange Management Shell and enter the following command:

Set-MailboxDatabase -Identity <'IdentityName'> -RetainDeletedItemsUntilBackup $true

Note: The <IdentityName> value must be in single quotes.

Check Contents

Open the Exchange Management Shell and enter the following command:

Get-MailboxDatabase| Select Name, Identity, RetainDeletedItemsUntilBackup

If the value of "RetainDeletedItemsUntilBackup" is not set to "True", this is a finding.

Vulnerability Number

V-228376

Documentable

False

Rule Version

EX16-MB-000270

Severity Override Guidance

Open the Exchange Management Shell and enter the following command:

Get-MailboxDatabase| Select Name, Identity, RetainDeletedItemsUntilBackup

If the value of "RetainDeletedItemsUntilBackup" is not set to "True", this is a finding.

Check Content Reference

M

Target Key

4223

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