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RHEL-09-215020 RHEL 9 must not have the sendmail package installed.

DISA STIG library V2R10
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

RHEL 9 must not have the sendmail package installed.

Control

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.

Discussion

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

Related controls

CCI-000381

Fix

Remove the sendmail package with the following command: $ sudo dnf remove sendmail