I've registered the service (went ok, available method shows up) in VFP, but when I try to test it it comes back with the following:

Error: 1429 - OLE IDispatch exception code 0 from Connector: Connector:Host not found. HRESULT=0x800A1521 - Client:An unanticipated error occurred during the processing of this request. HRESULT=0x800A1521 - Client:Sending the Soap message failed or no recognizable response was received HRESULT=0x800A1521 - Client:Unspecified client error. HRESULT=0x800A1521..
Connector:Host not found. HRESULT=0x800A1521 - Client:An unanticipated error occurred during the processing of this request. HRESULT=0x800A1521 - Client:Sending the Soap message failed or no recognizable response was received HRESULT=0x800A1521 - Client:Unspecified client error. HRESULT=0x800A1521

I got an email from the serviceprovider with a link, and when I click on that link everything works and I get the expected response.

What could be going wrong here?

TIA