All of a sudden RAS Dial in clients coming in through a 3com Superstack RAS 1500 are timing out on Netbios Name resolution. Nothing has changed and this only effects the dial in RAS clients. WINIPCFG on the clients shows that they received the proper WINS server addresses from DHCP. When an address is pinged, response is quick. However, when a named is pinged the response takes a while to come back. Local users do not seem to be having any trouble and the two WINS servers appear to be running OK.
This keeps RAS clients from geting Outlook to connect to Exchange because it looks for the mail server name. We already tried WINS static mapping of the Mail server and even put an entry on the client’s Lmhost file for the mail server to no avail. Any suggestions?