Update: If this solution doesn't resolve the problem, please contact the Teaching & Learning Commons for further assistance, x4810.
Some people have reported that they are getting bounced emails when emailing students.
The problem appears to be a cached contact issue. We made some changes on the mail server and the contact stored in Outlook is looking for the file we removed. We made this change to resolve other email issues, but this is a side-effect of that fix.
To resolve the problem