cant see ISA server - PLEASE HELP - Urgent

[kasser]

Hi all,

Im really confused. We have some machines on a DMZ which we give access to the internet too.
I want these machines to hit my isa server and then go out, at the mo they are hitting a isa server which we have not got in production.
When I try adding the proxy settings for my isa server it cant see it. Both ISA servers are on the same lan and are coming off the same switch.
I have checked the firewall but cant seem to find any reason why this is happening. Please can someone point me in the right direction.
I cant ping my isa server but i can ping the other isa server

 

[kasser]

I have resolved this, there was an entry in my PIX for a url server and it wasnt the one we should be using. Thanks all anyway