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. Roundcubemail ships with
an installer which can help you do all this, but it is disabled by
default for security reasons. You can enable it in main.inc.php by
setting the 'enable_installer' variable to 'true'. Then browse to
http://server/roundcubemail/installer to use the installer.