STIGQter: STIG Summary: Microsoft Exchange 2019 Edge Server Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 30 Jan 2025:

Exchange must render hyperlinks from email sources from non-.mil domains as unclickable.

DISA Rule

SV-259643r961638_rule

Vulnerability Number

V-259643

Group Title

SRG-APP-000441

Rule Version

EX19-ED-000238

Severity

CAT II

CCI(s)

• CCI-002420 - Maintain the confidentiality and/or integrity of information during preparation for transmission.

Weight

10

Fix Recommendation

Update the EDSP to reflect the name of the Transport Agent.

Contact the DISA Enterprise Email Service Desk at disa.tinker.eis.mbx.dod-enterprise-services-service-desk@mail.mil and request the Agent and installation procedures.

or

Contact DEE Engineering PMO and request the Agent and installation procedures.

Check Contents

Note: If using another DOD-approved anti-spam product for email or a DOD-approved Email Gateway spamming device, such as Enterprise Email Security Gateway (EEMSG), this is not applicable.

Note: If system is on SIPRNet, this is not applicable.

Review the Email Domain Security Plan (EDSP).

Determine the name of the Transport Agent.

Open the Windows PowerShell console and enter the following command:

Get-TransportAgent -Name 'customAgent' | Format-List

If the value does not return "customAgent", this is a finding.

Note: "customAgent" is the name of the custom agent developed to render hyperlink email sources from non .mil domains as unclickable.

Vulnerability Number

V-259643

Documentable

False

Rule Version

EX19-ED-000238

Severity Override Guidance

Note: If using another DOD-approved anti-spam product for email or a DOD-approved Email Gateway spamming device, such as Enterprise Email Security Gateway (EEMSG), this is not applicable.

Note: If system is on SIPRNet, this is not applicable.

Review the Email Domain Security Plan (EDSP).

Determine the name of the Transport Agent.

Open the Windows PowerShell console and enter the following command:

Get-TransportAgent -Name 'customAgent' | Format-List

If the value does not return "customAgent", this is a finding.

Note: "customAgent" is the name of the custom agent developed to render hyperlink email sources from non .mil domains as unclickable.

Check Content Reference

M

Target Key

5579