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

Exchange internal Send connectors must require encryption.

DISA Rule

SV-221262r612603_rule

Vulnerability Number

V-221262

Group Title

SRG-APP-000439

Rule Version

EX16-ED-000690

Severity

CAT I

CCI(s)

• CCI-002418 - The information system protects the confidentiality and/or integrity of transmitted information.

Weight

10

Fix Recommendation

Open the Exchange Management Shell and enter the following command:

Set-SendConnector -Identity <'IdentityName'> -TlsDomain <'SMTP Domain'>

Set-SendConnector -Identity <'ReceiveConnector'> -DomainSecureEnabled 'True'

Note: The SMTP Domain is the internal SMTP domain within the organization.

Check Contents

Open the Exchange Management Shell and enter the following command:

Get-SendConnector | Select Name, Identity, TlsDomain

If the value of "TlsDomain" is not set to the value of the internal <'SMTP Domain'>, this is a finding.

Get-SendConnector | Select Name, Identity, DomainSecureEnabled

If the value of 'DomainSecureEnabled' is not set to 'True', this is a finding.

Vulnerability Number

V-221262

Documentable

False

Rule Version

EX16-ED-000690

Severity Override Guidance

Open the Exchange Management Shell and enter the following command:

Get-SendConnector | Select Name, Identity, TlsDomain

If the value of "TlsDomain" is not set to the value of the internal <'SMTP Domain'>, this is a finding.

Get-SendConnector | Select Name, Identity, DomainSecureEnabled

If the value of 'DomainSecureEnabled' is not set to 'True', this is a finding.

Check Content Reference

M

Target Key

4079

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