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

Exchange Mail quota settings must not restrict receiving mail.

DISA Rule

SV-228379r612748_rule

Vulnerability Number

V-228379

Group Title

SRG-APP-000246

Rule Version

EX16-MB-000310

Severity

CAT III

CCI(s)

• CCI-001094 - The information system restricts the ability of individuals to launch organization-defined denial of service attacks against other information systems.

Weight

10

Fix Recommendation

Open the Exchange Management Shell and enter the following command:

Set-MailboxDatabase -Identity <'IdentityName'> -ProhibitSendReceiveQuota Unlimited

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

or

Enter the value as identified by the EDSP that has obtained a signoff with risk acceptance.

Check Contents

Open the Exchange Management Shell and enter the following command:

Get-MailboxDatabase | Select Name, Identity, ProhibitSendReceiveQuota

If the value of "ProhibitSendReceiveQuota" is not set to "Unlimited", this is a finding.

or

If the value of "ProhibitSendReceiveQuota" is set to an alternate value and has signoff and risk acceptance in the EDSP, this is not a finding.

Vulnerability Number

V-228379

Documentable

False

Rule Version

EX16-MB-000310

Severity Override Guidance

Open the Exchange Management Shell and enter the following command:

Get-MailboxDatabase | Select Name, Identity, ProhibitSendReceiveQuota

If the value of "ProhibitSendReceiveQuota" is not set to "Unlimited", this is a finding.

or

If the value of "ProhibitSendReceiveQuota" is set to an alternate value and has signoff and risk acceptance in the EDSP, this is not a finding.

Check Content Reference

M

Target Key

4223

Comments