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

Exchange messages with a blank sender field must be filtered.

DISA Rule

SV-221233r612603_rule

Vulnerability Number

V-221233

Group Title

SRG-APP-000261

Rule Version

EX16-ED-000340

Severity

CAT II

CCI(s)

• CCI-001308 - The information system automatically updates spam protection mechanisms.

Weight

10

Fix Recommendation

Open the Exchange Management Shell and enter the following command:

Set-SenderFilterConfig -BlankSenderBlockingEnabled $true

Check Contents

This requirement is N/A for SIPR enclaves.

This requirement is N/A if the organization subscribes to EEMSG or other similar DoD enterprise protections for email services.

Open the Exchange Management Shell and enter the following command:

Get-SenderFilterConfig | Select Name, BlankSenderBlockingEnabled

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

Vulnerability Number

V-221233

Documentable

False

Rule Version

EX16-ED-000340

Severity Override Guidance

This requirement is N/A for SIPR enclaves.

This requirement is N/A if the organization subscribes to EEMSG or other similar DoD enterprise protections for email services.

Open the Exchange Management Shell and enter the following command:

Get-SenderFilterConfig | Select Name, BlankSenderBlockingEnabled

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

Check Content Reference

M

Target Key

4079

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