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

Exchange auto-forwarding email to remote domains must be disabled or restricted.

DISA Rule

SV-207269r615936_rule

Vulnerability Number

V-207269

Group Title

SRG-APP-000038

Rule Version

EX13-MB-000015

Severity

CAT II

CCI(s)

• CCI-001368 - The information system enforces approved authorizations for controlling the flow of information within the system based on organization-defined information flow control policies.

Weight

10

Fix Recommendation

Non-Enterprise Mail Fix Text:

Open the Exchange Management Shell and enter the following command:

Set-RemoteDomain -Identity <'IdentityName'> -AutoForwardEnabled $false

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

Enterprise Mail Fix Text:

New-RemoteDomain -Name <NewRemoteDomainName> -DomainName <SMTP Address>

Note: NewRemoteDomainName must either be a .mil or .gov domain.

Set-RemoteDomain -Identity <'RemoteDomainIdentity'> -AutoForwardEnabled $true

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

Check Contents

Non-Enterprise Mail Check Content:

Open the Exchange Management Shell and enter the following command:

Get-RemoteDomain | Select Identity, AutoForwardEnabled

If the value of AutoForwardEnabled is not set to False, this is a finding.

Enterprise Mail Check Content:

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

and

In the Exchange Management Shell, enter the following command:

Get-RemoteDomain

If the value of RemoteDomain is not set to a .mil and/or .gov domain(s), this is a finding.

Vulnerability Number

V-207269

Documentable

False

Rule Version

EX13-MB-000015

Severity Override Guidance

Non-Enterprise Mail Check Content:

Open the Exchange Management Shell and enter the following command:

Get-RemoteDomain | Select Identity, AutoForwardEnabled

If the value of AutoForwardEnabled is not set to False, this is a finding.

Enterprise Mail Check Content:

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

and

In the Exchange Management Shell, enter the following command:

Get-RemoteDomain

If the value of RemoteDomain is not set to a .mil and/or .gov domain(s), this is a finding.

Check Content Reference

M

Target Key

2923

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