This tutorial explains how to setup mail server on ubuntu 14.04 using postfix,dovecot and squirrelmail. » Postfix ( for sending ) » Dovecot ( for receiving ) » Squirrelmail ( for webmail access ). Here i have used mail.krizna.com for hostname and krizna.com for Domain . please replace with your domain . » Installing and configuring postfix » Installing and configuring dovecot » Installing and co