We have a WIN 2000 server and 20 X WIN98/WIN2000 clients. The server is only one in the org. and is running DNS but not DHCP or WINS. Access to outside is via ADSL line, router and Netscreen firewall box with VPN enabled.
Problem that has recently developed is that all computers on the network cannot browse to the organisations web site (hosted externall on ISP's web server) unless clients type in the IP address of the hosting server. All other web sites are OK and the site can be accessed from outside of the network.
I presume that a DNS error is causing this but if so, why are other sites OK? Can ping the ISP's web server hosting the site so packets are getting through the router and firewall, if I try and ping the www address I get host unknown.
Do not have a root zone entry in DNS or any proxy software. The default gateway in the client TCP/IP config is the router. The clients are configured to use the WIN2000 server as their primary DNS then the ISP's DNS server as secondary, however, if these 2 addresses are swaped around so that the ISP's server is the primary DNS then if finds the site OK. The only changes that have occured recently to the network/web site that I know about is that some new pages have been uploaded recently to the ISP's web server. Any ideas please?