I recently synced my Exchange email with Outlook 2011 on my work computer and my name is not always correct in the From line of an email.  The Outlook I'm using has been synced with other email addresses from previous employees and I have deleted the old accounts, but the From line has the name of the person who previously used this computer.  For example, I will send an email and the From line will say "From: Previous Employee Name <my email address>" instead of my name. 

I've deleted the old accounts from Outlook and I'm not sure what else to do to fix this error.