bash script for installing postfix smtp on ubuntu 12.04 server

install-smtp.sh

#!/bin/bash

# This script helps install postfix SMTP server and plain login authentication without TLS/SSL
#
# Tested on Ubuntu 12.04 Server

sudo aptitude -y install postfix sasl2-bin

sudo dpkg-reconfigure postfix

# sudo sed -ie 's/START=no/START=yes\nPWDIR="\/var\/spool\/postfix\/var\/run\/saslauthd"\nPARAMS="-m ${PWDIR}"\nPIDFILE="${PWDIR}\/saslauthd.pid"/' /etc/default/saslauthd

sudo sed -ie 's/START=no/START=yes/' /etc/default/saslauthd

# sudo sed -ie 's/MECHANISMS=.*$/MECHANISMS="shadow"/' /etc/default/saslauthd

sudo sed -ie 's/OPTIONS=.*$/OPTIONS="-c -m \/var\/spool\/postfix\/var\/run\/saslauthd"/' /etc/default/saslauthd

# delete:
# TLS parameters
# smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
# smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
# smtpd_use_tls=yes
# smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
# smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

sudo postconf -e 'home_mailbox = Maildir/'
sudo postconf -e 'smtpd_sasl_auth_enable = yes'
# sudo postconf -e 'broken_sasl_auth_clients = yes'

sudo sh -c "echo 'pwcheck_method: saslauthd\nmech_list: plain login' >> /etc/postfix/sasl/smtpd.conf"

sudo dpkg-statoverride --force --update --add root sasl 755 /var/spool/postfix/var/run/saslauthd

sudo service postfix restart
sudo service saslauthd start