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I - Mission Critical Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • The Exchange Spam Evaluation filter must be enabled.

    &lt;VulnDiscussion&gt;By performing filtering at the perimeter, up to 90 percent of spam, malware, and other undesirable messages may be eliminated...
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • The Exchange Block List service provider must be identified.

    &lt;VulnDiscussion&gt;Block List filtering is a sanitization process performed on email messages prior to their arrival at the destination mailbox....
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • Exchange messages with a malformed From address must be rejected.

    &lt;VulnDiscussion&gt;Sender Identification (SID) is an email anti-spam sanitization process. Sender ID uses DNS MX record lookups to verify the Si...
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • The Exchange Recipient filter must be enabled.

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practice strategies for setting tuning configurations. Careful tuning reduc...
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • The Exchange tarpitting interval must be set.

    &lt;VulnDiscussion&gt;Tarpitting is the practice of artificially delaying server responses for specific Simple Mail Transfer Protocol (SMTP) commun...
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • Exchange 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) sen...
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • Exchange Simple Mail Transfer Protocol (SMTP) IP Allow List entries must be empty.

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practice strategies for setting tuning configurations. Careful tuning reduc...
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • The Exchange Simple Mail Transfer Protocol (SMTP) IP Allow List Connection filter must be enabled.

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practice strategies for setting tuning configurations. Careful tuning reduc...
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • The Exchange Simple Mail Transfer Protocol (SMTP) Sender filter must be enabled.

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practices strategies for setting tuning configurations. Careful tuning redu...
    Rule Medium Severity
  • SRG-APP-000261

    <GroupDescription></GroupDescription>
    Group
  • Exchange must have anti-spam filtering installed.

    &lt;VulnDiscussion&gt;Originators of spam messages are constantly changing their techniques to defeat spam countermeasures; therefore, spam softwar...
    Rule Medium Severity

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