i have win 2008 R2 as workgroup and ii had installed DHCP and added to it option 60 PXE client and DNS on the same server DHCP is configured as the following

*Always dynamically update DNS A and PTR record

But
all clients registered in reverse lookup zone but not not registered in forward lookup zone
so all clients have PTR record but not have A record

except DHCP server have A record and PTR record
any one can help me