Published website needs to use hostname only

Hi,

I have a web application that only works when you use the hostname to access it, iehttp://server01/client not http://server01.domain.local/client. It crashes the web browser if we enter the fqdn.

Im trying to publish this website externally through TMG 2010. Unfortunately when entering the externally published web address we get the same crashing issue.

Is there any way to force tmg only to use the hostname or ip address?