This walkthrough will detail the installation and configuration of exim on your Ubuntu installation.

Firstly, lets get exim installed:

sudo su # enable root for installation and configuration - enter your password when prompted
apt-get install exim4 # Installs exim

Next, run the configuration

dpkg-reconfigure exim4-config # Runs the configuration program for exim

Here is a quick runthrough of the screens (there is more information on each screen if you require):

• Mail Server configuration > OK
• General type of mail configuration: > mail sent by smarthost; received via SMTP or fetchmail > OK
• System mail name: > (leave the default in place) > OK
• IP-addresses to listen on: > 127.0.0.1 > OK
• Other destinations: > (leave the default in place) > OK
• Machines to relay mail for: > (leave blank) > OK
• IP address or host name: > (Your ISPs SMTP server) > OK
• Hide local mail name: > No > OK
• In normal mode of operation: > OK
• Keep number of DNS-queries minimal: > No
• Delivery method: > mbox format in /var/mail/ > OK
• Split configuration: > No

The configuration program will then close

* Stopping MTA for restart [ OK ]

* Restarting MTA  [ OK ]

Next, we will install mailutils - a useful program that will allow us to send a test mail. Still as root,run:

apt-get install mailutils

Then send a test mail:

mail (email address you would like to email)
cc: (press enter to skip cc:)
Subject: (enter a subject, then press enter)
. (the . ends the message body)

You should recieve the email at your selected address shortly.