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

Exchange Outbound Connection Timeout must be 10 minutes or less.

DISA Rule

SV-259597r961155_rule

Vulnerability Number

V-259597

Group Title

SRG-APP-000247

Rule Version

EX19-ED-000110

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Update the EDSP to reflect the Connection Timeout value.

Open the Exchange Management Shell and enter the following command:

Set-SendConnector -Identity <'IdentityName'> -ConnectionInactivityTimeOut 00:10:00

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

or

The value as identified by the EDSP that has obtained a signoff with risk acceptance.

Repeat the procedure for each send connector.

Check Contents

Review the Email Domain Security Plan (EDSP).

Determine the Connection Timeout value.

Open the Exchange Management Shell and enter the following command:

Get-SendConnector | Select-Object -Property Name, Identity, ConnectionInactivityTimeOut

For each send connector, if the value of "ConnectionInactivityTimeOut" is not set to "00:10:00", this is a finding.

or

If "ConnectionInactivityTimeOut" is set to other than "00:10:00" and has signoff and risk acceptance in the EDSP, this is not a finding.

Vulnerability Number

V-259597

Documentable

False

Rule Version

EX19-ED-000110

Severity Override Guidance

Review the Email Domain Security Plan (EDSP).

Determine the Connection Timeout value.

Open the Exchange Management Shell and enter the following command:

Get-SendConnector | Select-Object -Property Name, Identity, ConnectionInactivityTimeOut

For each send connector, if the value of "ConnectionInactivityTimeOut" is not set to "00:10:00", this is a finding.

or

If "ConnectionInactivityTimeOut" is set to other than "00:10:00" and has signoff and risk acceptance in the EDSP, this is not a finding.

Check Content Reference

M

Target Key

5579