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USNS MONTFORD POINT - Findings

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Vuln ID	Severity	Asset	STIG	Title	Status	Doc Status	Assigned To	Actions
V-228382	CAT III	MONT-MB-002	Microsoft Exchange 2016 Mailbox Server S...	Exchange Message size restrictions must be control...		-
Check Text Review the EDSP or document that contains this information. Determine the global maximum message receive size and whether signoff with risk acceptance is documented for the Receive connector to have a different value. Open the Exchange Management Shell and enter the following command: Get-ReceiveConnector \| Select Name, Identity, MaxMessageSize Identify Internet-facing connectors. For each Receive connector, if the value of "MaxMessageSize" is not the same as the global value, this is a finding. or If "MaxMessageSize" is set to a numeric value different from the global value and has signoff and risk acceptance in the EDSP, this is not a finding. Fix Text Update the EDSP to specify the global maximum message receive size and, if operationally necessary, to document signoff with risk acceptance for the Receive connector to have a different value, or verify that this information is documented by the organization. Open the Exchange Management Shell and enter the following command: Set-ReceiveConnector -Identity <'IdentityName'> -MaxMessageSize <'MaxReceiveSize'> Note: The <IdentityName> and <MaxReceiveSize> values must be in single quotes. or Enter the value as identified by the EDSP that has obtained a signoff with risk acceptance. Repeat the procedure for each Receive connector. Finding Details Evaluate-STIG 1.2507.5 (Scan-MSExchange2016MB_Checks) was unable to determine a Status but found the below configuration on 10/23/2025: ResultHash: D3DFF3D8C70E00D492107351428464E54027448A ~~~~~ Default MONT-MB-002 MaxMessageSize: 36 MB (37,748,736 bytes) Client Proxy MONT-MB-002 MaxMessageSize: 36 MB (37,748,736 bytes) Default Frontend MONT-MB-002 MaxMessageSize: 36 MB (37,748,736 bytes) Outbound Proxy Frontend MONT-MB-002 MaxMessageSize: 36 MB (37,748,736 bytes) Client Frontend MONT-MB-002 MaxMessageSize: 36 MB (37,748,736 bytes) 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

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