Postgrey & Spamassassin installation ubuntu 12.04lts

#!/bin/sh
#
# Script to install postgrey and spamassassin on Ubuntu ZPanel system, arrogantly hacked from Centos 6.4 and ZPanel 10.1.0 script by acid
#
# Designed for ZPanel 10.1.1 & Ubuntu 12.04LTS
#
# Version 1
#
if which postgrey >/dev/null; then
echo "postgrey already exist"
else
echo "Installing postgrey"
apt-get -y install postgrey
sed -i '/^smtpd_recipient_restrictions =/ s/$/ check_policy_service inet:127.0.0.1:10023,/' /etc/zpanel/configs/postfix/main.cf
sed -i 's/POSTGREY_OPTS=\"--inet=10023"/POSTGREY_OPTS=\"--inet=127.0.0.1:10023 --delay=150\"/g' /etc/default/postgrey
service postgrey start
service postfix reload
chkconfig postgrey on
echo "postgrey installed"
fi
# Install Spamassassin
if which spamassassin >/dev/null; then
echo "spamassassin already exist"
else
echo "Installing spamassassin"
apt-get -y install spamassassin spamc
# Enable
sed -i 's/ENABLED=0/ENABLED=1/g' /etc/default/spamassassin
# Set Home Directory
sed -i '/OPTIONS=/i \SAHOME="/var/log/spamassassin/"' /etc/default/spamassassin
# Set Options inc log
sed -i 's/OPTIONS="--create-prefs --max-children 5 --helper-home-dir"/OPTIONS="--create-prefs --max-children 2 --username spamd --helper-home-dir ${SAHOME} -s ${SAHOME}spamd.log"/g' /etc/default/spamassassin
# Setup sa user account
groupadd spamd
useradd -g spamd -s /bin/false -d /var/log/spamassassin spamd
mkdir /var/log/spamassassin
chown spamd:spamd /var/log/spamassassin
# Edit local file
sed -i '1s/^/required_hits 5.0\n/' /etc/spamassassin/local.cf
sed -i '2s/^/report_safe 0\n/' /etc/spamassassin/local.cf
sed -i '3s/^/required_score 5\n/' /etc/spamassassin/local.cf
sed -i '4s/^/rewrite_header Subject ***SPAM***\n/' /etc/spamassassin/local.cf
# Update postfix master.cf
sed -i '/^smtp        inet/ s/$/ -o content_filter=spamassassin/' /etc/zpanel/configs/postfix/master.cf
sed -i '/^smtp      inet/ s/$/ -o content_filter=spamassassin/' /etc/zpanel/configs/postfix/master.cf
sed -i '/^smtp    inet/ s/$/ -o content_filter=spamassassin/' /etc/zpanel/configs/postfix/master.cf
sed -i '/^smtp  inet/ s/$/ -o content_filter=spamassassin/' /etc/zpanel/configs/postfix/master.cf
echo "\nspamassassin unix - n n - - pipe flags=R user=spamd argv=/usr/bin/spamc -e /usr/sbin/sendmail -oi -f \${sender} \${recipient}\n" >> /etc/zpanel/configs/postfix/master.cf
service postfix restart
service spamassassin restart
echo "SpamAssassin installed, to test it send a mail from outside with the subject: XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X"
echo "Your first email will take about 150 seconds to arrive"
fi