We have had some problems on our network since yesterday (although nothing has changed). Users have been having problems accessing mail and application servers.
When an IPCONFIG /ALL is done it looks fine and the DNS Servers are listed as 172.16.0.4 and 172.16.0.2 which is correct. When the problem occurs the IPCONFIG /ALL still looks fine but the DNS server IP changes to 192.168.1.1 which is not in our IP range.
I have checke the domain controllers etc., but cant find any reason why this is happening.
Can anyone help before I go insane??