Linux Babe published a tutorial about installing and configuring OpenDKIM on a CentOS 8 or RHEL 8 mail server.
How to Set Up OpenDKIM on CentOS 8/RHEL 8 Mail Server
As of now, OpenDKIM is included in the EPEL repository for CentOS 8/RHEL 8. Some folks prefer to use OpenDKIM so I will show you how in this tutorial.
How to Set Up OpenDKIM on CentOS 8/RHEL 8 Mail Server
