Thanx for your reply.
I checked the name before cause this seems to be a common mistake. And the user name is prefix and user so it seems to be okay.
The path is /var/www/clients/client1/web1 but there are symlinks in var/www with the domains to the clients
The heck after the installation of squirrelmail I canīt phpmyadmin https://domain.tls:8080/phpmyadmin
and all equvalants donīt work