Reverse proxy and use of SOAP websevices

Hi

We have a customer where the IT team setup a reverse proxy.

At this stage i fail to conect to sage x3 via soap webservices , command i do i get an empty response.

i know that the sage x3 part works fine, i tested the webservices, they read fine. the pool is running with admin.

I chaned my URL to be the reverse proxy one. 

When i put the url in the browser for a normal login to sage x3 after i sort out the authentication that allows me to recah the url, i can login with admin .

Any ideas will be welcome,i will continue searching help online for any kind of documentation.

kind regards