Extract Email Headers from exchange server

Hello, I need help creating a software that will extract some informations from the email headers if they trigger predetermined conditions before they reach the end user. Some other conditions will block the email if triggered I don't mind which language u'll use to write the software as long as I have the source code, What do you need to have : Very good understanding of email exchange Some database skills, we can even use access to set the tables and use ODBC to connect to the software Very good at programming Some understanding of regex Many thanks