Oh, so fixing normal bugs is no longer a priority?
I note with interest that the bug that causes Outlook to utterly ignore whatever mail server you've set and first probe the root of the domain found in the email address has still been left entirely unaddressed.
Never mind that that is a good way of taking over an account (as it does that even AFTER it may have managed to hook up to your server, just in case some hacker wants to change your settings) - nah, it's not in the list that Microsoft wants to talk about this, umm, year?