Can I use IIS7 to redirect traffic from a subdomain to my mac server

Question

I'm setting up a new mac server and am going through the process of getting everything right. I want external traffic to be able to reach it so I can use profile manager to manage employee devices. At the moment it doesn't work- pushing apps and etc just hangs

The mac is sitting in the same network as a windows 2008r2 server that all external traffic goes to. I have an A record for macserver.mynetwork.com pointing to the external IP.

On the iis server I have the following rewrite rule

                <rule name="ReverseProxyInboundRule1" stopProcessing="true">
                    <match url="^(.*)" />
                 <conditions>
                        <add input="{HTTP_HOST}" pattern="^(macserver.*)" />
                    </conditions>
                    <action type="Rewrite" url="http://theserverip/{PATH_INFO}" logRewrittenUrl="true" />

                </rule>

...and this seems to work for getting to the server manager frontpage but whenever I need to access any subdirectory/link i get stuck in a redirect loop.

I'm not sure if I'm completely off the rails where wasting time, the end goal is just to have profile manager working from behind the windows server.