All,I have a strange issue in my network.We have a DHCP server and aroud 150 users in the network.Once in a while the DNS IP assigned by DHCP automatically changes from my actual IP to 192.168.0.1 and all the users will face issues.When i use "repair" option in network settings the normal settings gets affected.This happens almost once in 2 months and then automatically gets corrected.I have tried find malware/spyware in the network but in vain of no use.Has anyone come across the same iaaue and solved it ,please let me know.Thanking you all in advance.RegardsAkram

Hi Akram, It looks like it is Windows related DNS/DHCP issue. This is Exchange Server - Admin forum. Suggest you to post your question in Windows newsgroup to get faster responses from the product experts. Windows 2003 NewsGroup: http://technet.microsoft.com/en-us/windowsserver/bb841405.aspx