exim installation in ubuntu

#sudo apt-get install exim4 mutt
 
#  sudo dpkg-reconfigure exim4-config
  ----------------------------------------------------------------------------------------
        smarthost - no local delivery
        E-Mail-Name: name of the local machine e.g. 'myLaptop.example.com'
        incoming connections: 127.0.0.1
        local domains: empty
        visible domain name:  'example.com'
        smarthost: mySmarthost.example.com
        limit dns: no
        small config files: yes
    -----------------------------------------------------------------------------------------------------------
      

      #sudo vi /etc/exim4/passwd.client
        mySmarthost.example:login:password
   
       #sudo /etc/init.d/exim4 restart

test:
mutt test@example.com