Symptoms
Assume that the 2007 Microsoft Office Servers Service Pack 3 (SP3) is installed. When a Web Services for Remote Portlets (WSRP) user sends a request, the WSRP user receives an exception.
Resolution
To resolve this issue, you must add redirect servers to a trusted server list in Microsoft Office SharePoint Server 2007. You can create a trusted server list by adding the following element into the <Producer> element in the WSRP configuration file:
<RedirectServers>
<RedirectServer>safe.org</RedirectServer>
</RedirectServers>
Note The WSRP configuration file has the following path:
C:\Program Files\Microsoft Office Servers\12.0\Config\TrustedWSRPProducers.config
More Information
For more information about the 2007 Office Servers SP3, visit the following Microsoft Knowledge Base (KB) article:
2526299 Description of the 2007 Office Servers SP3 and of the 2007 Office Servers Language Pack SP3
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.