STIGQter: STIG Summary: Microsoft Exchange 2016 Edge Transport Server Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 22 Jan 2021:

Exchange Receive connectors must control the number of recipients chunked on a single message.

DISA Rule

SV-221228r612603_rule

Vulnerability Number

V-221228

Group Title

SRG-APP-000247

Rule Version

EX16-ED-000290

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

Open the Exchange Management Shell and enter the following command:

Set-ReceiveConnector -Identity <'IdentityName'> -ChunkingEnabled $true

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

Repeat the procedure for each receive connector.

Check Contents

Open the Exchange Management Shell and enter the following command:

Get-ReceiveConnector | Select Name, Identity, ChunkingEnabled

For each receive connector, if the value of "ChunkingEnabled" is not set to "True", this is a finding.

Vulnerability Number

V-221228

Documentable

False

Rule Version

EX16-ED-000290

Severity Override Guidance

Open the Exchange Management Shell and enter the following command:

Get-ReceiveConnector | Select Name, Identity, ChunkingEnabled

For each receive connector, if the value of "ChunkingEnabled" is not set to "True", this is a finding.

Check Content Reference

M

Target Key

4079

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