[Exim4U] domains got create at mysql level but not on system level

HI i am testing the exim4u email server, i have followed the installation instruction on the website and did everything. the exim daemon is running. when i create users on the exim4u web interface, the users got created on the mysql database but there is no domain folder created on system for exim. i created a user for the system gid and uid. i dont know what am doing wrong please help, i cannot find out anything in the logs. Kebba