Does anyone know whether ISA Server installation has any effect on the timeout setting for DNS name resolution. Clients using the same DNS server but bypassing the ISA Server (cache mode) get web pages correctly. If they are configured to use the ISA Server the ISA Server returns a host not found message due to a timeout. If the user tries the web pages again and sometimes a third time, they get the page correctly. If ISA Server doesn't touch the settings a pointer to the right settings would be good. Any help would be much appreciated. Regards, Vald