Setup mail server on ubuntu 14.04 ( Postfix – dovecot ) http://www.krizna.com/ubuntu/setup-mail-server-ubuntu-14-04/
An In-Depth Guide to mod_rewrite for Apache – Envato Tuts+ Code Tutorial http://code.tutsplus.com/tutorials/an-in-depth-guide-to-mod_rewrite-for-apache–net-6708