help on this issue

Hi; I need ur help on this issue please. I have configured two pools of IPs in the radiusd.conf, but when I add the pool's name in the post-auth section, the daemon would not start. While debugging, I've got this message: Rlm_ippool: Failed to open file /etc/raddb/db.ippool/db.ippool: permission denied Radiusd.conf [1482]: main_pool : Module instantation failed. Any help would be appreciated Thanks Elie