{"description": "A mail server is required for sending emails.\nThe <code>s-nail</code> package can be installed with the following command:\n<pre>\n$ apt-get install s-nail</pre>", "rationale": "Emails can be used to notify designated personnel about important\nsystem events such as failures or warnings.", "severity": "medium", "references": {"nist": ["CM-3(5)"], "srg": ["SRG-OS-000363-GPOS-00150"]}, "control_references": {}, "components": [], "identifiers": {}, "ocil_clause": "the package is not installed", "ocil": " Run the following command to determine if the <code>s-nail</code> package is installed: <pre>$ dpkg -l  s-nail</pre>", "oval_external_content": null, "fixtext": "", "checktext": "", "vuldiscussion": "", "srg_requirement": "", "warnings": [], "conflicts": [], "requires": [], "policy_specific_content": {"stig": {"srg_requirement": "Ubuntu 22.04 must have the s-nail package installed.", "fixtext": "The s-nail package can be installed with the following command:\n\n$ sudo dnf install s-nail", "checktext": "Verify that Ubuntu 22.04 is configured to allow sending email notifications.\n\nNote: The \"s-nail\" package provides the \"mail\" command that is used to send email messages.\n\nVerify that the \"s-nail\" package is installed on the system:\n\n$ dnf list --installed s-nail\n\ns-nail.x86_64          14.9.22-6.el9\n\nIf \"s-nail\" package is not installed, this is a finding.", "vuldiscussion": "The \"s-nail\" package provides the mail command required to allow sending email notifications of unauthorized configuration changes to designated personnel."}}, "platform": null, "platforms": [], "sce_metadata": {}, "inherited_platforms": ["system_with_kernel"], "cpe_platform_names": [], "inherited_cpe_platform_names": ["system_with_kernel"], "bash_conditional": null, "fixes": {}, "title": "The s-nail Package Is Installed", "definition_location": "/aptdata/openscap/scap-security-guide/linux_os/guide/services/mail/package_s-nail_installed/rule.yml", "template": {"name": "package_installed", "vars": {"pkgname": "s-nail"}, "backends": {}}}