[otrs] Customers and AD

We have a customer database fed by Active Directory. By default, this setup uses the "from" address that the PostmasterPOP3.pl grabs to map the customer owner to the PrimarySMTP address in AD, so that the user can log in. We have issues where people are submitting tickets (from a form, where you enter your company email address) and arent using their PrimarySMTP address (chris.doe as opposed to christopher.doe) Is there a neat way to look at the tickets that don't have the mappings appropriate? The only way I can tell is that the First and Last name don't show up under the CustomerID column. Is there anything else that may help me refine a query and fix some of these? Thanks for any guidance, Andy