| Vuln ID | Severity | Asset | STIG | Title | Status | Doc Status | Assigned To | Actions |
|---|---|---|---|---|---|---|---|---|
| V-228389 | CAT III | MONT-MB-002 | Microsoft Exchange 2016 Mailbox Server S... | The Exchange Outbound Connection Limit per Domain ... | - | |||
Check TextReview the Email Domain Security Plan (EDSP) or document that contains this information. Determine the value for Maximum Outbound Domain Connections. Open the Exchange Management Shell and enter the following command: Get-TransportService | Select Name, Identity, MaxPerDomainOutboundConnections If the value of "MaxPerDomainOutboundConnections" is not set to "20", this is a finding. or If "MaxPerDomainOutboundConnections" is set to a value other than "20" and has signoff and risk acceptance in the EDSP, this is not a finding. Fix TextUpdate the EDSP to specify the "MaxPerDomainOutboundConnection" value or verify that this information is documented by the organization. Open the Exchange Management Shell and enter the following command: Set-TransportService -Identity <'IdentityName'> -MaxPerDomainOutboundConnections 20 Note: The <IdentityName> value must be in single quotes. or Enter the value as identified by the EDSP that has obtained a signoff with risk acceptance. Finding DetailsEvaluate-STIG 1.2507.5 (Scan-MSExchange2016MB_Checks) was unable to determine a Status but found the below configuration on 10/23/2025: ResultHash: 26636067A7CB6EAC0757F199EB34339D679AFD0D ~~~~~ MONT-MB-002 MaxPerDomainOutboundConnections: 40 [Expected 20]
Source: _Reviewed/MONT-MB-002/Checklist/MONT-MB-002_MSExchange2016MB_V2R6_20251023-152357.ckl
Scan Date: 2026-01-14T12:57:33.455034
Technology Area: Exchange Server
|
||||||||