hi I have an ISA server with secureNAT clients. ISA connects to internet with dial up (primery route) when a user requests a web page . the dial up connection was established correctly but I recive this message in clients internet explorer: 500 Internal Server Error - ISA Server dial-out connection failed. The administrator should manually dial the specified phonebook entry to determine if the number can be reached. (12207) Internet Security and Acceleration Server please help me tanks. mahdi