For our project we need a WindowsMedia-Server to publish several MediaFiles. To avoid problems with the firewalls of our customers, we enabled HTTP streaming [Port 80]for Windows Media Unicast service. At the ISA-Server, we defined a DestinationSet and established a WebPublishingRule. But when we try to access the MediaFile via official FQDN [media.xyz.net], we get the following MediaPlayer-Error: "Windows Media Player cannot find the file. The server name, shared directory name, or file name may be incorrect." It doesn't matter whether we try it from the Intra- or the InterNet. When we use the local FQDN [media.corp.xyz.net], it works fine in the Intranet. But when we create an asx-File by the MediaServer with the official FQDN, it also works from both sides. Which possibilities do we have to publish our MediaFiles through the ISA-Server by using the official FQDN on port 80? Thanks, P. Saharkhiz