STIGQter: STIG Summary: MS Exchange 2013 Edge Transport Server Security Technical Implementation Guide Version: 1 Release: 5 Benchmark Date: 26 Apr 2019:

Exchange Internet-facing Send connectors must specify a Smart Host.

DISA Rule

SV-84435r2_rule

Vulnerability Number

V-69813

Group Title

SRG-APP-000213

Rule Version

EX13-EG-000080

Severity

CAT II

CCI(s)

• CCI-001178 - The information system provides additional data origin authentication artifacts along with the authoritative name resolution data the system returns in response to external name/address resolution queries.

Weight

10

Fix Recommendation

Open the Exchange Management Shell and enter the following command:

Set-SendConnector <'IdentityName'> -SmartHosts <'IP Address of Smart Host'> -DNSRoutingEnabled $false

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

Repeat the procedures for each Send connector.

Check Contents

Review the Email Domain Security Plan (EDSP).

If using an Edge Server a Smart Host does not need to be configured, therefore, this is not a finding.

Determine the Internet-facing connectors.

Open the Exchange Management Shell and enter the following command:

Get-SendConnector | Select Name, Identity, SmartHosts, DNSRoutingEnabled

For each Send connector, if the value of SmartHosts does not return the Smart Host IP Address and the value for DNSRoutingEnabled is not set to False, this is a finding.

Vulnerability Number

V-69813

Documentable

False

Rule Version

EX13-EG-000080

Severity Override Guidance

Review the Email Domain Security Plan (EDSP).

If using an Edge Server a Smart Host does not need to be configured, therefore, this is not a finding.

Determine the Internet-facing connectors.

Open the Exchange Management Shell and enter the following command:

Get-SendConnector | Select Name, Identity, SmartHosts, DNSRoutingEnabled

For each Send connector, if the value of SmartHosts does not return the Smart Host IP Address and the value for DNSRoutingEnabled is not set to False, this is a finding.

Check Content Reference

M

Target Key

3099

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