I setup Forefront TMG on a server that acts as the default gateway on the network. There are 3 other servers on the network that will host various sites. I have created rules in Forefront TMG, which will publish the sites, and in DNS, which will resolve the public names. The sites can be accessed correctly internally. Why is that when accessing the sites externally, they all go to the default site in IIS on the Forefront server?