Web site: http://roundcube.net/

rcmail-0.5.2.tar.gz

If install on CentOS 5: Install PHP 5.3 on CentOS 5

yum install php-pear

pear channel-update pear.php.net

pear install MDB2
pear install Mail_MIME
pear install Net_SMTP
pear install Auth_SASL

Create mysql database rcmail:

create database rcmail CHARACTER SET utf8 COLLATE utf8_general_ci;
grant all privileges on rcmail.* to 'rcmail'@'localhost' identified by 'rcmail';

Create apache config /etc/httpd/conf.d/rcmail.conf:

# for roundcube mail

Alias /rcmail/ /var/www/rcmail/

<Location /rcmail>
        AllowOverride Indexes
</Location>

tar zxvf rcmail-0.5.2.tar.gz
mv roundcubemail-0.5.2 /var/www/rcmail
cd /var/www/rcmail/
chown -R root:root .
chmod 777 temp logs

Open the web interface at http://hostname/rcmail/installer/index.php to continue.