If you use Microsoft Outlook (not Outlook Express - see Outlook Express Users) in a corporate environment (that is, you connect to a Microsoft Mail or Exchange Server) you are most likely using the MAPI protocol to access your e-mail.
When you run the MailRules Setup Wizard, it will test the available MAPI services. There are different configurations options available for the Microsoft Outlook family of mail clients (What is a Mail Client?).
Depending on the installation of Microsoft Outlook that you are using, you may receive one of the following messages (or similar). Click on the message to read a suggested resolution.