Confirmed. My Live account that I use for xbox live is my gmail account. I was pleasantly surprised that I was able to login to outlook.com with my gmail address. However I am concerned about the ability to send email from outlook.com that is sent as the name of another provider.
In general that'd be fine. The sender address can be easily spoofed anyway - smtp works that way.
The thing is, this seems to be broken by design in my world. Google should (have to check that again) publish a record that lists 'official' mail servers for GMail.
This whole setup could work just fine, even if it's a bit weird. But right now I suppose you look like a crappy imposter to any receiver AND you can never receive emails (they .. would end up in your GMail inbox of course).
Try sending yourself an email. It will bounce back to that very same email address with a Delivery Status Notification from Hotmail's postmaster saying it couldn't be delivered.
