If you are a traveling freak and don’t want to miss any of your conversations, then here is the way by which you can set up a mail server on your Mac and use E-Mail irrespective of where you are.

To make your Mac a mail server all you have to do is to download and install postfix.

Then extract your files on the desktop.

Open the terminal window and run the following command from there:

cd /System/Library/Startup Items
sudo mv ~/Desktop/Postfix .
sudo chown -R 0:0 Postfix
sudo chmod +rx Postfix/Postfix

After dong this, you need to open /etc/hostconfig in a text editor

sudo vi /etc/hostconfig

Then look out for a line that begins with MAILSERVER and change its default value to -NO-

Now finally you can set up your SMTP server in your mail client to 127.0.0.1.

Via: technosailor