RHEL 9 must not have the sendmail package installed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-257827 | RHEL-09-215020 | SV-257827r1044892_rule | CCI-000381 | medium |
| Description | ||||
| 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. Satisfies: SRG-OS-000480-GPOS-00227, SRG-OS-000095-GPOS-00049 | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2025-05-14 | |||
Details
Check Text (C-257827r1044892_chk)
Verify that the sendmail package is not installed with the following command:
$ dnf list --installed sendmail
Error: No matching Packages to list
If the "sendmail" package is installed, this is a finding.
Fix Text (F-61492r925467_fix)
Remove the sendmail package with the following command:
$ sudo dnf remove sendmail