Mail server
Remote or central computer that holds electronic mail messages for clients on a network. When the user requests his or her e-mail they contact the mail server, which delivers to the client computer all mail being stored.
If you're
looking for the mail server address information you should be looking for
the POP3 and SMTP
information.
In the real world, a mail server is similar to the post office, where mail is stored and sorted before being sent to its final destination.
Also see: E-mail, Mail transfer agent, Network definitions