New Client has been using SME for email server.  Tech Guy #3 (as they call him) set up something on here for a email account that everyone can access.  It is called 'adbuild'.  
I cannot find a username for that account, nor can I see where it is stored, etc.  I think it has something to do with IMAP storage, but have no understanding of that.  
When I setup an IMAP email account, I can't see the 'adbuild' folder, and when I try and access it throught POP3 I have no idea what the password is for the account or where I can change it. 
Any guidance toward where to start looking for this would be appreciated.