One of the best things about JoMail, is that it will work the same on whosever operating system that you are using (RedHat, Solaris, Windows, ...).
In essence, there is no configuration
to be done on a Linux or a Unix system, simply download JoMail and unpack
it. A JoMail directory will be created for you. Cd into the directory and
type JoMail.sh. We recommend setting the Look and Feel to the CDE Look
and Feel because, to us, it is more attractive than the flat grey default.