Install Squirrelmail in Ubuntu By: Onno W. Purbo # apt-get install dovecot-common dovecot-imapd dovecot-pop3d # apt-get install squirrelmail squirrelmail-decode # vi /etc/dovecot/dovecot.conf protocols = imap pop3 # /etc/init.d/dovecot restart # /usr/sbin/squirrelmail-configure 2 -> 1 -> domai.id -> R