Sorry, this is slightly off the ISA topic I have heard that it is a security no-no to have your SMTP server reply with the following when connecting to it through telnet. "220 <hostname>.<domain>.com Microsoft ESMTP MAIL Service, Version: 5.0.2195.1600 ready at Thu, 30 Nov 2000 18:09:43 -0600" Does anyone know how to disable this response? Regards, John Burridge