#!/bin/sh if which postfix > /dev/null; then echo 'Postfix is already installed' else echo 'Installing Postfix' sudo debconf-set-selections <<< "postfix postfix/mailname string tedivm.com" sudo debconf-set-selections <<< "postfix postfix/main_mailer_type string 'Local only'" sudo apt-get -qq update sudo apt-get -qq -y install postfix mailutils sudo postconf -e 'home_mailbox = Maildir/' fi