Email Server
install postfix dan paket terkait
1.  install 
	apt-get install postfix postfix-tls libsasl2 sasl2-bin libsasl2-modules popa3d
2. Konfigurasi postfix di /etc/postfix/main.cf
3. restart postfix dengan 
	/etc/init.d/postfix restart
4. Install dovcot sebagai POP3 Server
	apt-get install dovecot-imapd dovecot-pop3d dovecot-common
5. edit Dovecot configuration file di /etc/dovecot/dovecot.conf #vi /etc/dovecot/dovecot.conf
	# specify protocols = imap imaps pop3 pop3s
	protocols = pop3 imap
	# uncomment this and change to no.
	disable_plaintext_auth = no
	pop3_uidl_format = %08Xu%08Xv

6.tambahkan user untuk test email
	#adduser user_name

7. Restart Dovecot 
	#/etc/init.d/dovecot restart

8. Buka tanderbird dan arahkan ke email server untuk mencoba POP3
9. Installing Squirrel Web Mail
   a. pastikan apache2 dan php terinstall
	apt-get install apache2 libapache2-mod-php5 php5-cli php5-common php5-cgi
   b. install squirrelmail sebagai paket web mail
	apt-get install squirrelmail
   c. konfigurasi file di  /etc/squirrelmail/ 
   d. run konfigurasi squirrelmail 
	/usr/sbin/squirrelmail-configure
   e. edit apache configuration vi /etc/apache2/apache2.conf dan insert baris berikut :
	Include /etc/squirrelmail/apache.conf
   f. restart webserver
	#/etc/init.d/apache2 restart
   g. Buka webmail dari browser
	http://yourdomain or serverip/squirrelmail
   h. Untuk trobuleshooting email di  /var/log/mail.log

10 Untuk keamanan install konfigurasi SASL Authentication dengan TLS 
   a. Edit the postfix configuration file /etc/postfix/main.cf 
	smtpd_sasl_auth_enable = yes
	smtpd_sasl_local_domain = yourdomain.com
	smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination
	smtpd_sasl_security_options = noanonymous
   b. Jalankan command
	#rm -r /var/run/saslauthd/
	#mkdir -p /var/spool/postfix/var/run/saslauthd
	#ln -s /var/spool/postfix/var/run/saslauthd /var/run
	#chgrp sasl /var/spool/postfix/var/run/saslauthd
	#adduser postfix sasl

  c. Edit /etc/dovecot/dovecot.conf
	auth default {
	mechanisms = plain login
	passdb pam {
	}
	userdb passwd {
	}
	socket listen {
	client {
	path = /var/spool/postfix/private/auth
	mode = 0660
	user = postfix
	group = postfix
	}

	}

	}

  d.  restart semua komponen mail server
	#/etc/init.d/saslauthd restart
	#/etc/init.d/postfix restart
	#/etc/init.d/dovecot restart