In my domain I have a Win2003 server which acts as the main server with DNS/DHCP coming from it. I also have 2 Win 2000 domain controllers as backup DC's. All run in the same domain (sale.com). I am having a couple of small problems with DNS and am looking at the best way of setting up the dns for the 3 servers to run at. Currently all servers have the DNS set as primary DNS servers. I am not sure but believe this is not correct. When I run a DNSLINT on the system it passes all tests and everything runs fine but 2 - 3 days later I conduct the same test and find that one of the servers details has changed (ie sale-grammar-fs.trafflearning.sale.com changes to sale-grammar-fs.trafflearning) ie, it drops off the Sale.com. Now when I run the DNSLINT it says that one of the Glue records is unrecognised. Could someone advise on the best practice for DNS when having 3 DC's in a domain.