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II - Mission Support Public

Rules and Groups employed by this XCCDF Profile

  • Exch-2-710

    <GroupDescription></GroupDescription>
    Group
  • Receive Connector timeout must be limited.

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practices strategies for setting tuning. This configuration controls the ...
    Rule Low Severity
  • Exch-2-715

    <GroupDescription></GroupDescription>
    Group
  • Internal Receive Connectors must not allow anonymous connections.

    &lt;VulnDiscussion&gt;This control is used to limit the servers that may use this server as a relay. If a Simple Mail Transport Protocol (SMTP) se...
    Rule Medium Severity
  • Exch-2-718

    <GroupDescription></GroupDescription>
    Group
  • Internal Receive Connectors must require encryption.

    &lt;VulnDiscussion&gt;The Simple Mail Transfer Protocol (SMTP) Receive Connector is used by Exchange to send and receive messages from server to se...
    Rule Medium Severity
  • Exch-2-727

    <GroupDescription></GroupDescription>
    Group
  • Receive Connectors must control the number of recipients per message.

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practices strategies for setting tuning configurations. This configuratio...
    Rule Low Severity
  • Exch-2-733

    <GroupDescription></GroupDescription>
    Group
  • Receive Connectors must be clearly named.

    &lt;VulnDiscussion&gt;For receive connectors, unclear naming as to direction and purpose increases risk that messages may not flow as intended, tro...
    Rule Low Severity
  • Exch-2-736

    <GroupDescription></GroupDescription>
    Group
  • Auto-forwarding email to remote domains must be disabled or restricted.

    &lt;VulnDiscussion&gt;Attackers can use automated messages to determine whether a user account is active, in the office, traveling, and so on. An a...
    Rule Medium Severity
  • Exch-2-741

    <GroupDescription></GroupDescription>
    Group
  • Receive Connector Maximum Hop Count must be 60.

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practices strategies for setting tuning configurations. This setting contro...
    Rule Low Severity
  • Exch-2-751

    <GroupDescription></GroupDescription>
    Group
  • Send Connectors must be clearly named.

    &lt;VulnDiscussion&gt;For send connectors, unclear naming as to direction and purpose increases risk that messages may not flow as intended, troubl...
    Rule Low Severity
  • Exch-2-754

    <GroupDescription></GroupDescription>
    Group
  • Send Connectors delivery retries must be controlled.

    &lt;VulnDiscussion&gt;This setting controls the rate at which delivery attempts from the home domain are retried, user notifications are issued, an...
    Rule Low Severity
  • Exch-2-757

    <GroupDescription></GroupDescription>
    Group
  • Message size restrictions must be controlled on Send connectors.

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practices strategies for setting tuning configurations. For message size re...
    Rule Low Severity
  • Exch-2-760

    <GroupDescription></GroupDescription>
    Group
  • Send Connector connections count must be limited.

    &lt;VulnDiscussion&gt;This setting controls the maximum number of simultaneous outbound connections allowed for a given SMTP Connector, and can be ...
    Rule Low Severity
  • Exch-2-763

    <GroupDescription></GroupDescription>
    Group
  • Internal Send Connectors must use Domain Security (Mutual Authentication TLS).

    &lt;VulnDiscussion&gt;The Simple Mail Transfer Protocol (SMTP) connector is used by Exchange to send and receive messages from server to server. Th...
    Rule Medium Severity
  • Exch-2-766

    <GroupDescription></GroupDescription>
    Group
  • Internal Send Connectors must require encryption.

    &lt;VulnDiscussion&gt;The Simple Mail Transfer Protocol (SMTP) connector is used by Exchange to send and receive messages from server to server. Th...
    Rule Medium Severity
  • Exch-2-771

    <GroupDescription></GroupDescription>
    Group
  • Internet facing send Connectors must specify a Smart Host.

    &lt;VulnDiscussion&gt;In the case of identifying a 'Smart Host' for the email environment, a logical send connector is the preferred method. A 'S...
    Rule Medium Severity
  • Exch-2-801

    <GroupDescription></GroupDescription>
    Group
  • Connectivity logging must be enabled.

    &lt;VulnDiscussion&gt;A connectivity log is a record of the SMTP connection activity of the outbound message delivery queues to the destination Mai...
    Rule Medium Severity
  • Exch-2-805

    <GroupDescription></GroupDescription>
    Group
  • Exchange must not send delivery reports to remote domains.

    &lt;VulnDiscussion&gt;Attackers can use automated messages to determine whether a user account is active, in the office, traveling, and so on. An a...
    Rule Medium Severity
  • Exch-2-808

    <GroupDescription></GroupDescription>
    Group
  • Exchange must not send non-delivery reports to remote domains.

    &lt;VulnDiscussion&gt;Attackers can use automated messages to determine whether a user account is active, in the office, traveling, and so on. An a...
    Rule Medium Severity
  • Exch-2-811

    <GroupDescription></GroupDescription>
    Group
  • External/Internet bound automated response messages must be disabled.

    &lt;VulnDiscussion&gt;SPAM originators, in an effort to refine mailing lists, sometimes use a technique where they monitor transmissions for automa...
    Rule Medium Severity
  • Exch-2-814

    <GroupDescription></GroupDescription>
    Group
  • Exchange must not send auto replies to remote domains.

    &lt;VulnDiscussion&gt;Attackers can use automated messages to determine whether a user account is active, in the office, traveling, and so on. An a...
    Rule Medium Severity
  • Exch-2-817

    <GroupDescription></GroupDescription>
    Group
  • Email Diagnostic log level must be set to low or lowest level.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities, and can be useful in detecting attack attempts or determining tuning adjust...
    Rule Medium Severity
  • Exch-2-820

    <GroupDescription></GroupDescription>
    Group
  • The Send Fatal Errors to Microsoft must be disabled.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities, and can be useful in detecting attack attempts or determining tuning adjust...
    Rule Medium Severity
  • Exch-2-823

    <GroupDescription></GroupDescription>
    Group
  • Administrator audit logging must be enabled.

    &lt;VulnDiscussion&gt; Unauthorized or malicious data changes can compromise the integrity and usefulness of the data. Automated attacks or malici...
    Rule Medium Severity
  • Exch-2-826

    <GroupDescription></GroupDescription>
    Group
  • Audit data must be protected against unauthorized access.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities, and can be useful in detecting attack attempts or determining tuning adjust...
    Rule Medium Severity
  • Exch-2-828

    <GroupDescription></GroupDescription>
    Group
  • Exchange application directory must be protected from unauthorized access.

    &lt;VulnDiscussion&gt;Default product installations may provide more generous access permissions than are necessary to run the application. By exa...
    Rule Medium Severity
  • Exch-2-831

    <GroupDescription></GroupDescription>
    Group
  • Exchange must not send Customer Experience reports to Microsoft.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities, and can be useful in detecting attack attempts or determining tuning adjust...
    Rule Medium Severity

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