Office 365, Email, Exchange, Email address not registered or more than one person has the same email address

A bounce message includes one or more of the following phrases: Delivery has failed to these recipients or groups More than one person has this e-mail address Recipient does not have their email address registered

This error occurs when the recipient does not have an email address in the Mail field in the Electronic Directory Editor. If this occurs for your account, the resolution is to log into https://ede.cites.illinois.edu and update the Mail field with a valid address where your want your Illinois email delivered to. A valid address in EDE can be one of the following:
After the change has been applied, it may take a few hours for all of the systems to update.