as i mentioned before, i have a isaserver thats behind a router. I wanted to pulish outlook webaccess. Publishing just wont work. When you are on the internet and you want to log on i takes the internal ipadress! If you want to use outlook web access, you create a destination set. With the following configuration options: - destination = the name of youre website in my case www.mokkinksystems.com - path = /exchange* Now you must create a routing rule with the following configuration options: - in destination you must put the destination set you just created. - action = redirect them to hsoted site = in my case www.mokkinksystems.com And thats all, then OWA will work. Greetings Rob