你可以直接跟微軟申請 Exchange2007 試用帳號，免費（當然也不用主機）
Welcome to the Microsoft Exchange Server 2007 Trial web site. You can create a temporary account to experience the features of Exchange Server 2007 SP1 which will stay active for 5 days. Your account will be pre-populated with sample messages, calendar appointments and a voice message to help you have a rich experience. You will be able to send and receive mail, schedule meetings, and adjust your options. You can access your account via Outlook Web Access, Outlook, or an Exchange Active-Sync compatible application. Please review your pre-populated messages for details.