Sendmail is not the default mail transfer agent and is not installed by default. The 'sendmail' package can be removed with the following command: '$ sudo yum erase sendmail' [no/yes] The sendmail software was not developed with security in mind and its design prevents it from being effectively contained by SELinux. Postfix should be used instead. oval:org.secpod.oval:def:48972 oval:org.secpod.oval:def:48359 SCAP Repo OVAL Definition 2018-11-08