I'm just going through the configuration for setting up a hybrid configuration on my Exchange 2010 SP3 server for communication with Office 365. I'm running the wizard and get to the "Domain Proof of Ownership" screen, but no domains appear in the list (see attached).
I have separately run the Get-FederatedDomainProof command, got the TXT entry and tried running the wizard without anything on the screen, but I get a "Federation information could not be received from the external organization." error.(see attached)
Really grateful for any help you can offer.