MS Exchange 2010 Edge Transport Server STIG
Rules, Groups, and Values defined within the XCCDF Benchmark
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Exch-2-736
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Exch-2-334
Group -
Sender Identification Framework must be enabled.
Email is only as secure as the recipient. When the recipient is an email server accepting inbound messages, authenticating the sender enables the receiver to better assess message quality and to va...Rule Medium Severity -
Message size restrictions must be controlled on Receive connectors.
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...Rule Low Severity -
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 ...Rule Medium Severity -
Internal Receive Connectors must require encryption.
The Simple Mail Transfer Protocol (SMTP) Receive Connector is used by Exchange to send and receive messages from server to server using SMTP protocol. This setting controls the encryption strength...Rule Medium Severity -
Auto-forwarding email to remote domains must be disabled or restricted.
Attackers can use automated messages to determine whether a user account is active, in the office, traveling, and so on. An attacker might use this information to conduct future attacks. Ensure Aut...Rule Medium Severity -
Tarpitting interval must be set.
Tarpitting is the practice of artificially delaying server responses for specific SMTP communication patterns that indicate high volumes of SPAM or other unwelcome messages. The intent of tarpittin...Rule Medium Severity -
Send Connectors delivery retries must be controlled.
This setting controls the rate at which delivery attempts from the home domain are retried, user notifications are issued, and notes the expiration time when the message will be discarded. If de...Rule Low Severity -
Internal Send Connectors must use Domain Security (Mutual Authentication TLS).
The Simple Mail Transfer Protocol (SMTP) connector is used by Exchange to send and receive messages from server to server. There are several controls that work together to provide security between ...Rule Medium Severity -
Internal Send Connectors must require encryption.
The Simple Mail Transfer Protocol (SMTP) connector is used by Exchange to send and receive messages from server to server. There are several controls that work together to provide security between ...Rule Medium Severity -
Email Diagnostic log level must be set to low or lowest level.
Log files help establish a history of activities, and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. Diagnostic logging, however, characterist...Rule Medium Severity -
The Send Fatal Errors to Microsoft 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. This setting enables an automated log e...Rule Medium Severity -
Queue monitoring must be configured with threshold and action.
Monitors are automated “process watchers” that respond to performance changes, and can be useful in detecting outages and alerting administrators where attention is needed. Exchange has built-in mo...Rule Medium Severity -
Email software must be monitored for change on INFOCON frequency schedule.
The INFOCON system provides a framework within which the Commander USSTRATCOM regional commanders, service chiefs, base/post/camp/station/vessel commanders, or agency directors can increase the mea...Rule Medium Severity -
Email application must not share a partition with another application.
In the same way that added security layers can provide a cumulative positive effect on security posture, multiple applications can provide a cumulative negative effect. A vulnerability and subseque...Rule Medium Severity -
Global outbound message size must be controlled.
Email system availability depends in part on best practices strategies for setting tuning configurations. Message size limits should be set to 10 megabytes at most, but often are smaller, depending...Rule Low Severity -
Block list service provider must be identified.
Block List filtering is a sanitization process performed on email messages prior to their arrival at the destination mailbox. By performing this process at the email perimeter, threats can be elim...Rule Medium Severity -
Attachment filtering must remove undesirable attachments by file type.
By performing filtering at the perimeter, up to 90 percent of spam, malware, and other undesirable messages are eliminated from the message stream rather than admitting them into the mail server en...Rule Medium Severity -
Messages with blank sender field must be filtered.
By performing filtering at the perimeter, up to 90% of SPAM, malware, and other undesirable messages are eliminated from the message stream rather than admitting them into the mail server environme...Rule Medium Severity
Node 2
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