Siapkan POP3, IMAP & SMTP Server

# apt-get install dovecot-common dovecot-imapd dovecot-pop3d postfix \
squirrelmail squirrelmail-decode

Pastikan dovecot mendukung imap

# vi /etc/dovecot/dovecot.conf
 protocols = imap pop3

Restart Dovecot

# /etc/init.d/dovecot restart

Konfigurasi squirrelmail

# cp /etc/squirrelmail/apache.conf /etc/apache2/conf.d/squirrelmail.conf

Konfigurasi Domain Squirrelmail

# /usr/sbin/squirrelmail-configure
 2 -> 1 -> domain.id -> R

Restart Squirrelmail

# /etc/init.d/apache2 restart

Webmail dapat di akses melalui

http://ip-address-server/squirrelmail