For server level systems such as email gateways, which is what Mail Scanner is, you really should not install a GUI with your operating system unless it is specifically designed for use with Mail Scanner such as Mailborder or Baruwa.
In short, if Mail Scanner does not need something to function, then you should not install it.
If you're looking at this howto it is assumed that you have some level of experience with email servers, DNS, TCP/IP, Firewalls and Linux in general.
Mailborder provides a free Community Edition, a Small Business Edition, and an Enterprise Edition with premium support and extended capabilities, such as a customer portal.Most any Linux or Unix based operating system will work with Mail Scanner.However, the most common and easily supported operating systems that have specific packages and testing are listed to your right.(Examples: Yum, Apt, Zypper) Each installation script will check for basic requirements to Mail Scanner to operate and then attempt to install any missing components via your server's package management system.You will also have the option to remediate missing Perl modules automatically via CPAN.