Rocky Linux and RoundCube WebMail part 3

This is part 3 of building a WebMail server using Rocky Linux.
In this video, I set up Postfix SMTP and Dovecot IMAP.
Understanding SELinux security becomes more important.
Starting to add OpenSSL and other cryptography encryption to the services.
More firewall rules using firewalld.
And testing user accounts that can send email to each other.

The project page is continually updated as I make progress.
https://silicontao.com/main/marquis/article/RoyceTheBiker/Rocky%20Linux%20Webmail%20Server