Page can not display in PPM6.0

HI experts,

our basis had installed the IDES EHP7 including PPM6.0, and I have done some configurations.

now the problem is that, if I click to create a project or a portfolio, the webpage will not be displayed.

I have checked that the URL address will be redirected to an unknown address. for example, my correct URL should be http://test.corp.com:8000, but after I click to create a new project, the URL of pop-upped page will be http://eccde.wdf.sap.com:50080.  Strange!

am I miss some configuration steps? can anyone help me on this.

please also kindly refer to this issue, it is similar as mine:

Page cannot be displayed while Creating Portfolio

Thanks

William