Dell X1052 DHCP Relay Not Working

Hi,

I have a problem regarding Dell X1052 that the DHCP relay is not working. Currently my DHCP server is Microsoft Server 2008 with the up of 192.168.0.20 and my switch is 10.0.247.101, i have tested from switch able to ping the DHCP server. However, the DHCP relay unable to poll and access IP to end devices. Is that any missing configuration. All the configuration was done thru GUI