Outlook 207 Cache mode can read email even if select cancel at password prompt (probably pertains to Exch 2013 as well)

Hi All,

I am using outlook 2007 with exchange 2007. I have laptops with outlook 2007 configured in cache mode. If a user launches outlook and they press cancel at the password prompt, they cannot GET new email but they can READ old email. How do I configure system(s) so if no password is entered or if wrong password is entered, the user cannot view old cached email. Any ideas?

Thanks