I have taken over a site and one of the users has been setup with an account with an apostrophe in their username ie: xy'name. The apostrophe has been carried through from their user logon name, their alias and the email address.
They were not getting email addresses because people were mistyping the email address so I have given second email address without the apostrophe and made that the primary address.
I am wondering what are the implications of removing the apostrophe from the alias and user logon?
Environment is Exchange 2010 and Server 2008R2 Domain and forest functional level still at 2003