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XCCDF
MS Exchange 2013 Edge Transport Server Security Technical Implementation Guide
SRG-APP-000247
Exchange Global Outbound Message size must be controlled.
Exchange Global Outbound Message size must be controlled.
An XCCDF Rule
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Exchange Global Outbound Message size must be controlled.
Low Severity
<VulnDiscussion>Email system availability depends in part on best practice strategies for setting tuning configurations. Message size limits should be set to 10 megabytes at most but often are smaller, depending on the organization. The key point in message size is that it should be set globally, and it should not be set to "unlimited". Selecting "unlimited" on either field is likely to result in abuse and can contribute to excessive server disk space consumption. Message size limits may also be applied on Send and Receive connectors, public folders, and the user account in Active Directory. Changes at these lower levels are discouraged, as the single global setting is usually sufficient. This practice prevents conflicts that could impact availability and simplifies server administration.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>