I am getting messages and calendar events from some domains that appear correctly in Outlook.com, but do not appear in my other clients.  This is a very consistent problem. The originating emails and calendar requests (I believe) are being hosted by an Office 365 account. 

The other clients I am using:

Windows Phone 8 (on a Lumia 1020)

Windows 8 Metro client (2 machines)

Windows 8/Outlook 2013 desktop client (2 machines)

How do I correct this, or is this a known bug?

Thank you!