We made some DNS changes yesterday. We are hosting the DNS entries so we edited the settings on DNS on our domain controller server 2003. We deleted the old CNAME record and added the new one then it works for a while (we can ping and everything) and it changes back by itself to the old CNAME entry.
Let say server1 CNAME server2 and we added server1 CNAME server3 but server1 keeps changing back to server2.
Why is that happening and how can we prevent that from happening?
Thank you in advance!