Receive Connectors must control the number of recipients chunked on a single message.

From Exchange 2010 Edge Transport Server STIG

Associated with IA controls: ECSC-1

SV-43994r1_rule Receive Connectors must control the number of recipients chunked on a single message.

Vulnerability discussion

Email system availability depends in part on best practices strategies for setting tuning configurations. For message size restrictions, multiple places exist to set or override inbound or outbound message size. Failure to control the configuration strategy can result in loss of data or system availability. This setting enables the administrator to enable ‘chunking’ on received messages as they arrive at the domain. This is done so that large message bodies can be relayed by the remote sender to the receive connector in multiple, smaller chunks.

Check content

Open the Exchange Management Shell and enter the following command: Get-ReceiveConnector | Select Name, Identity, ChunkingEnabled If the value of 'ChunkingEnabled' is set to 'True', this is not a finding.

Fix text

Open the Exchange Management Shell and enter the following command: Set-ReceiveConnector -Identity <'ReceiveConnector'> -ChunkingEnabled $true

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.