We use FACSys Fax Connector for Microsoft Exchange Server. It was purchased from Optus software. We've been using it for several years. I didn't do the initial server install, but the FACsys manager is an easy to use program. You set up the phones lines, and the user options such as print or mailbox. The client Facsys viewer is a snap. I have 2 incoming fax lines and the faxes automatically route to the inbox of the end users. The viewer lets them open the files or the can send to a printer as well. Very low maintenance on my part.