|You would need to install an email server application. |
I suspect if you knew anything about installing/configuring/adminstering an email server, you wouldn't be here (in the wrong forum no less) asking this question.
So all I can tell you is, you've got a lot to learn as this isn't a simple thing you ask.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.