I have been asked to modify display names for consultants so that our users can more easily recognize the fact that outside vendors are on the email chain. The challenge I am facing is limiting this to only be visible within our corporate network.
The basic idea would be to have the display name read "Consultant - John Smith". However, this carries over to emails sent outside our domain (i.e. I can see it in my Gmail as well as my corporate email).
I know that I can make my mail relay strip this out, but that is a lot of overhead that I do not want to place on that device. I want Exchange or Outlook to do that instead.