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Guide to the Secure Configuration of Alibaba Cloud Linux 3

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Configure SSL Certificates for Use with SMTP AUTH

    If SMTP AUTH is to be used, the use of SSL to protect credentials in transit is strongly recommended. There are also configurations for which it ma...
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  • Mail Server Software

    Mail servers are used to send and receive email over the network. Mail is a very common service, and Mail Transfer Agents (MTAs) are obvious target...
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  • The Postfix package is installed

    A mail server is required for sending emails. The <code>postfix</code> package can be installed with the following command: <pre> $ sudo yum instal...
    Rule Medium Severity
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  • Enable Postfix Service

    The Postfix mail transfer agent is used for local mail delivery within the system. The default configuration only listens for connections to the de...
    Rule Unknown Severity
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  • Configure SMTP For Mail Clients

    This section discusses settings for Postfix in a submission-only e-mail configuration.
    Group
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  • Postfix Network Interfaces

    The setting for inet_interfaces in /etc/postfix/main.cf
    Value
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  • Postfix relayhost

    Specify the host all outbound email should be routed into.
    Value
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  • Postfix Root Mail Alias

    Specify an email address (string) for a root mail alias.
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  • Configure System to Forward All Mail For The Root Account

    Make sure that mails delivered to root user are forwarded to a monitored email address. Make sure that the address <xccdf-1.2:sub idref="xccdf_org....
    Rule Medium Severity
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  • Configure System to Forward All Mail From Postmaster to The Root Account

    Verify the administrators are notified in the event of an audit processing failure. Check that the "/etc/aliases" file has a defined value for "roo...
    Rule Medium Severity
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