Microsoft Exchange 2016 Mailbox Server Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-APP-000027
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SRG-APP-000033
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SRG-APP-000038
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SRG-APP-000089
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Exchange Connectivity logging must be enabled.
A connectivity log is a record of the SMTP connection activity of the outbound message delivery queues to the destination Mailbox server, smart host, or domain. Connectivity logging is available on...Rule Medium Severity -
SRG-APP-000089
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SRG-APP-000089
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SRG-APP-000098
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SRG-APP-000098
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Exchange Email Subject Line logging must be disabled.
Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. When "message tracking" is enabled, only t...Rule Medium Severity -
SRG-APP-000098
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Exchange Message Tracking Logging must be enabled.
A message tracking log provides a detailed log of all message activity as messages are transferred to and from a computer running Exchange. If events are not recorded, it may be difficult or impos...Rule Medium Severity -
SRG-APP-000111
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SRG-APP-000141
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Exchange Send Fatal Errors to Microsoft must be disabled.
It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and...Rule Medium Severity -
SRG-APP-000118
Group -
Exchange must protect audit data against unauthorized read access.
Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. Audit log content must always be considere...Rule Medium Severity -
SRG-APP-000141
Group -
Exchange must not send Customer Experience reports to Microsoft.
It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and...Rule Medium Severity -
SRG-APP-000119
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SRG-APP-000120
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SRG-APP-000125
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SRG-APP-000131
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SRG-APP-000141
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SRG-APP-000141
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SRG-APP-000211
Group -
SRG-APP-000213
Group -
SRG-APP-000219
Group -
SRG-APP-000231
Group -
SRG-APP-000231
Group -
SRG-APP-000231
Group -
SRG-APP-000246
Group -
SRG-APP-000246
Group -
SRG-APP-000246
Group -
SRG-APP-000247
Group -
SRG-APP-000247
Group -
SRG-APP-000247
Group -
SRG-APP-000247
Group -
SRG-APP-000247
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The Exchange Send connector connections count must be limited.
The Exchange Send connector setting controls the maximum number of simultaneous outbound connections allowed for a given SMTP connector and can be used to throttle the SMTP service if resource cons...Rule Low Severity -
SRG-APP-000247
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The Exchange global inbound message size must be controlled.
Email system availability depends in part on best practice strategies for setting tuning configurations. Message size limits should be set to 10 megabytes (MB) at most but often are smaller, depend...Rule Low Severity -
SRG-APP-000247
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SRG-APP-000247
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The Exchange Outbound Connection Limit per Domain Count must be controlled.
Email system availability depends in part on best practice strategies for setting tuning configurations. This configuration controls the maximum number of simultaneous outbound connections from a d...Rule Low Severity -
SRG-APP-000247
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SRG-APP-000261
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Exchange Internal Receive connectors must not allow anonymous connections.
This control is used to limit the servers that may use this server as a relay. If a Simple Mail Transport Protocol (SMTP) sender does not have a direct connection to the Internet (for example, an a...Rule Medium Severity -
SRG-APP-000261
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SRG-APP-000261
Group
Node 2
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