I'm trying to connect data from Exchange 2010 to a SharePoint site through SharePoint designer, using the ASMX web services Exchange 2010 exposed as a Web Service data source.
I've already verified that there are no network issues and have verified that the WSDL is correctly read, but I keep getting this message:
<WSDL URL> did not return a valid description of an XML Web Service. Please check the address and try again.
I did go through several threads in social.msdn where they have found this problem, but neither of them was my issue at all, and on some the issue itself is not clear.
I also checked connecting to a SharePoint site web service and a third party application web service, they work correctly, but I can't spot anything weird in the Exchange WSDL.
Any suggestion on how could I troubleshoot this issue?
UPDATE: Based on the comments I think I'd clarify this: I verified that the URL does return a WSDL, and I've even gone to the point of sniffing the connection to make sure that SPD is reading the WSDL. Still, however, I am getting this error.