In today's economic climate, everyone is looking for ways to reduce expenses. In the IT sector, one way to cut costs is by turning to open source alternatives instead of using expensive licensed products. This last part of our series explores OpenChange, which is designed to be used as an Exchange groupware server. E-mail is probably the backbone of your business; When the e-mail servers go down, everything can quickly grind to a halt. In this article, learn about the OpenChange e-mail server and whether it is ready for prime time.