Recently we had an employee of ours get married and adopt a new last name. I went through today and change the name / logon name / email address / etc for her. New email address and logon work just fine, but I am unable to send emails to her old email address. Under the user properties -> email addresses, I see her old email address as well as her new one. firstname.lastname@example.org is the default, and works great. Whenever I send an email to email@example.com it just bounces back saying that the email address is invalid. Any help would be appreciated.