Hi all. I installed roundcube for ISPconfig using this method: https://github.com/w2c/ispconfig3_roundcube/wiki/Installation-Instructions-(package) All good and roundcube was working ok and was rewachable trough: http://domain.com/webmail Since we have many websites it was more convinient to have our customers type only their username in the "Username" field of roundcube instead of their full mail account like [email protected]. In order to do that we installed a plugin named vlogin. Next thing was to change main.inc.php located in: /var/www/apps/roundcube/config/main.inc.php and changing the line : $rcmail_config['default_host'] = 'yourserver.com'; Next we changed roundcube.conf file ie. /etc/apache2/conf.d/roundcube.conf and added two folders to php_admin_value open_basedir /var/www/apps/roundcube and folder /tmp -- this one is for attachments our roundcube.conf now looks like this: >