STIGQter: STIG Summary: Microsoft Exchange 2013 Mailbox Server Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 22 Jan 2021:

Exchange Send connectors delivery retries must be controlled.

DISA Rule

SV-207306r615936_rule

Vulnerability Number

V-207306

Group Title

SRG-APP-000247

Rule Version

EX13-MB-000200

Severity

CAT III

CCI(s)

• CCI-001095 - The information system manages excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of denial of service attacks.

Weight

10

Fix Recommendation

Update the EDSP.

Open the Exchange Management Shell and enter the following command:

Set-TransportService -Identity <'IdentityName'> -TransientFailureRetryCount 10

Note: The <ServerIdentity> value must be in quotes.

or

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

Check Contents

Review the Email Domain Security Plan (EDSP).

Determine the value for Transient Failure Retry Count.

Open the Exchange Management Shell and enter the following command:

Get-TransportService | Select Name, Identity, TransientFailureRetryCount

If the value of TransientFailureRetryCount is not set to 10 or less, this is a finding.

or

If the value of TransientFailureRetryCount is set to more than 10 or has signoff and risk acceptance in the EDSP, this is not a finding.

Vulnerability Number

V-207306

Documentable

False

Rule Version

EX13-MB-000200

Severity Override Guidance

Review the Email Domain Security Plan (EDSP).

Determine the value for Transient Failure Retry Count.

Open the Exchange Management Shell and enter the following command:

Get-TransportService | Select Name, Identity, TransientFailureRetryCount

If the value of TransientFailureRetryCount is not set to 10 or less, this is a finding.

or

If the value of TransientFailureRetryCount is set to more than 10 or has signoff and risk acceptance in the EDSP, this is not a finding.

Check Content Reference

M

Target Key

2923

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