We are runnint Windows NT 4.0 with Exchange Server 5.0. Our Network Protocols are TCP/IP and NetBEUI.
We previously had two subnets (we'll cal them Alpha and Beta) communicating across an ISDN line.
Network Alpha's IP block was: 184.108.40.206-128
Network Beta's IP block was: 220.127.116.11-63
The subnet mask for both networks was: 255.255.255.192
We moved network (Beta) to the same physical network (Alpha) and reassigned DHCP to issue addresses between 18.104.22.168-128 with a subnet mask of 255.255.255.125.
We seem to be able to ping any workstation on the local subnet without problems by using the IP address. However, when we try to ping using NetBios names, many of the workstations don't respond. More importantly, many workstations cannot get their e-mail because their e-mail client registers with Exchange Server using a NetBios name.
By the way, we deleted the WINS server database and added a new one so that it would reconstruct itself.
I cannot figure this out.