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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-33574	Exch-2-730	SV-43994r1_rule	ECSC-1	Low

Description
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.

Description

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.

STIG	Date
MS Exchange 2010 Edge Transport Server STIG	2019-01-02

Details

Check Text ( C-41680r1_chk )
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 (F-37465r1_fix)
Open the Exchange Management Shell and enter the following command: Set-ReceiveConnector -Identity <'ReceiveConnector'> -ChunkingEnabled $true