Sending mail between users
I would like to set my redhat workstation up so that I can send mail from one user to another without sending it out over the internet and back. I know this must be possible, but can't find a way to do it.
I tried using the "mail" command from the shell, but the message doesn't actually go to the user I try to send it to.
Do I need to set up a mail server? Can someone point me to a good tutorial?