TOSS 5 must not have the sendmail package installed.

The "sendmail "software was not developed with security in mind, and its design prevents it from being effectively contained by SELinux. Postfix must be used instead.

Verify the "sendmail" package is not installed using the following command:

$ sudo dnf list --installed sendmail

Error: No matching Packages to list

If the "sendmail" package is installed, this is a finding.

Remove the "sendmail" package using the following command:

$ sudo dnf remove sendmail