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I - Mission Critical Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-APP-000213

    <GroupDescription></GroupDescription>
    Group
  • Exchange Internet-facing Send connectors must specify a Smart Host.

    &lt;VulnDiscussion&gt;When identifying a "Smart Host" for the email environment, a logical Send connector is the preferred method. A Smart Host ac...
    Rule Medium Severity
  • SRG-APP-000219

    <GroupDescription></GroupDescription>
    Group
  • Exchange 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
  • SRG-APP-000231

    <GroupDescription></GroupDescription>
    Group
  • Exchange Mailboxes must be retained until backups are complete.

    &lt;VulnDiscussion&gt;Backup and recovery procedures are an important part of overall system availability and integrity. Complete backups reduce th...
    Rule Medium Severity
  • SRG-APP-000231

    <GroupDescription></GroupDescription>
    Group
  • Exchange email forwarding must be restricted.

    &lt;VulnDiscussion&gt;Auto-forwarded email accounts do not meet the requirement for digital signature and encryption of Controlled Unclassified Inf...
    Rule Medium Severity
  • SRG-APP-000231

    <GroupDescription></GroupDescription>
    Group
  • Exchange email-forwarding SMTP domains must be restricted.

    &lt;VulnDiscussion&gt;Auto-forwarded email accounts do not meet the requirement for digital signature and encryption of Controlled Unclassified Inf...
    Rule Medium Severity
  • SRG-APP-000246

    <GroupDescription></GroupDescription>
    Group
  • Exchange Mail quota settings must not restrict receiving mail.

    &lt;VulnDiscussion&gt;Mail quota settings control the maximum sizes of a user’s mailbox and the system’s response if these limits are exceeded. Mai...
    Rule Low Severity
  • SRG-APP-000246

    <GroupDescription></GroupDescription>
    Group
  • Exchange Mail Quota settings must not restrict receiving mail.

    &lt;VulnDiscussion&gt;Mail quota settings control the maximum sizes of a user’s mailbox and the system’s response if these limits are exceeded. Mai...
    Rule Low Severity
  • SRG-APP-000246

    <GroupDescription></GroupDescription>
    Group
  • Exchange Mailbox Stores must mount at startup.

    &lt;VulnDiscussion&gt;Administrator responsibilities include the ability to react to unplanned maintenance tasks or emergency situations that may r...
    Rule Low Severity
  • SRG-APP-000247

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

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practice strategies for setting tuning configurations. For message size res...
    Rule Low Severity
  • SRG-APP-000247

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

    &lt;VulnDiscussion&gt;Email system availability depends in part on best practice strategies for setting tuning configurations. This configuration...
    Rule Low Severity

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