This package conforms to the Mandriva web applications policy:
http://wiki.mandriva.com/Policies/Web_Applications

It therefore differs from a standard installation in the following
ways:

* Logs are stored to /var/log/roundcubemail
* Temporary files are placed in /tmp
* Configuration files (main.inc.php and db.inc.php) are placed in
  /etc/roundcubemail

You will need to edit /etc/roundcubemail/main.inc.php and
/etc/roundcubemail/db.inc.php appropriately for your site before you
can use Roundcube. You must at least configure an appropriate mail
server and port in main.inc.php, and change the 
['des_key'] setting. In db.inc.php you must configure
an appropriate database location and user; in the most simple
configuration, you would create a new user and database both named
'roundcubemail' on a MySQL server running on the same machine, give
the roundcubemail user full read/write access to the roundcubemail
database, and set db.inc.php appropriately.