Accessing EV over Fortigate

Hi Folks,

I have a Customer who is NATing the EV-Page over a Fortigate. The strage issue is that entering https://evserver+domain/ leads to the IIS Start page of the EV-Server. Entering https://evserver+domain/EnterpriseVault/ leads to a Website not found.

When I enter the Public IP Addres https://PublicIPofEV/EnterpriseVault/ everything works fine. Binding in IIS does reply to all Domains without restrictions.

Anyone has any Ideas on what to look for and what to check.

I am out of ideas.

Thanks for any input