Failed: Mail routing isn't set up correctly for the domain '{0}'. To fix it, you need to contact the owner of '{0}' because ...

Failed: Mail routing isn't set up correctly for the domain '{0}'. To fix it, you need to contact the owner of '{0}' because that domain isn't part of your Office 365 environment. They might need to make an update to the mail exchanger (MX) record that indicates where their mail should go. For help, see the Actions pane on the right.