Cameronian
I hadn't spotted that before, but now i have I wouldn't worry about it.
Looks like they wanted to provide free web server back end for their services, so they signed up with an existing provider for space. Attempting to run their own service would have been a loss: BT and Sky for instance both use others services (Yahoo and Google respectively)
Could've been Yahoo, or M$ r AOL or Google. However it doesn't affect the main product - which is a bullet proof mail client