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

Exchange messages with malformed From address must be rejected.

DISA Rule

SV-84503r1_rule

Vulnerability Number

V-69881

Group Title

SRG-APP-000261

Rule Version

EX13-EG-000215

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-SenderIdConfig -SpoofedDomainAction Reject

Check Contents

Open the Exchange Management Shell and enter the following command:

Get-SenderIdConfig | Select Name, Identity, SpoofedDomainAction

If the value of SpoofedDomainAction is not set to Reject, this is a finding.

Vulnerability Number

V-69881

Documentable

False

Rule Version

EX13-EG-000215

Severity Override Guidance

Open the Exchange Management Shell and enter the following command:

Get-SenderIdConfig | Select Name, Identity, SpoofedDomainAction

If the value of SpoofedDomainAction is not set to Reject, this is a finding.

Check Content Reference

M

Target Key

3099

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