Thanks Prem, Srinivas and Girish.
Let me explain a little more the landscape. This issue is for SAP CRM Sales 2.0.1, so we can't make any modifications to the app code.
@Prem, yes we have additional domains. But the issue is we can't use the active directory, for some troubles in the file structure.
I would really appreciate it, if you have any additional info.
Regards,
Francisco