STIGQter: STIG Summary: Microsoft Exchange 2019 Mailbox Server Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 02 Jul 2025:

Exchange must not send automated replies to remote domains.

DISA Rule

SV-259692r961161_rule

Vulnerability Number

V-259692

Group Title

SRG-APP-000261

Rule Version

EX19-MB-000140

Severity

CAT II

CCI(s)

• CCI-001308 - Automatically update spam protection mechanisms on an organization-defined frequency.

Weight

10

Fix Recommendation

Open the Exchange Management Shell and enter the following command:

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

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

Check Contents

Note: Automated replies to .mil or .gov sites are allowed.

Open the Exchange Management Shell and enter the following command:

Get-RemoteDomain | Select-Object -Property Name, Identity, AutoReplyEnabled

If the value of "AutoReplyEnabled" is set to "True" and is configured to only reply to .mil or .gov sites, this is not a finding.

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

Vulnerability Number

V-259692

Documentable

False

Rule Version

EX19-MB-000140

Severity Override Guidance

Note: Automated replies to .mil or .gov sites are allowed.

Open the Exchange Management Shell and enter the following command:

Get-RemoteDomain | Select-Object -Property Name, Identity, AutoReplyEnabled

If the value of "AutoReplyEnabled" is set to "True" and is configured to only reply to .mil or .gov sites, this is not a finding.

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

Check Content Reference

M

Target Key

5580