We call them servers and they run different operating systems. Computer Services has given each of these servers a name so they can easily be referred to. That statement is true. In fact, the notification is concerning their account on the server handling their e-mail. Most of you use the servers for print sharing and e-mail functions.
Some people also use servers for running applications and file sharing.
Regardless the reason a person uses these servers, they have to deal with the security system that has been setup. By restricting only authorized users access to the servers, system administrators can provide better protection of everyone's data. The requirement to change passwords regularly enhances that protection.