When I post email address's to the BCC field and hit send I get this message. 

Please use the following format for email addresses: *** Email address is removed for privacy ***. If you're using category names or nicknames, make sure you don't have any typos.  Possible typos: *** Email address is removed for privacy ***"; *** Email address is removed for privacy ***"; *** Email address is removed for privacy ***"
Unknown names: Joe..

It will not allow me to send until all these types of messages are deleted.  How do I change the email to recognize I am not using category names or nicknames. I do not have my Outlook set up to send by nicknames, etc.