Instalasi Squirrelmail

Siapkan POP3, IMAP & SMTP Server

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

Pastikan dovecot mendukung imap

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

Restart Dovecot

# /etc/init.d/dovecot restart

Konfigurasi squirrelmail

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