Technical Architecture

	DME is based on a multi-threaded J2EE application server (Tomcat/JBoss), running on Linux or Windows and connected with an SQL-based database server. DME acts as a gateway between the DME clients and the corporate collaboration system, which can be Lotus Domino or Microsoft Exchange. The DME clients (mobile devices) request data from the DME server, which passes their requests on to the collaboration system. In doing so, the server mimics a regular mail client. The results of the requests are passed back to the clients. Mobile devices connect to the DME server using the secure HTTPS protocol through a mobile VPN network or any other network (GSM, GPRS, 3G/UMTS, EDGE, Bluetooth, WLAN and cable/cradle), guarded by certificates and AES 128-bit encryption. The server itself is located in the company DMZ. The client connections are authenticated based on user lookup (through LDAP or LDAPS), and are routed to the collaboration system. From the server, the connection to the collaboration system is made through standard ports: WebDAV (OWA, Outlook Web Access) on Microsoft Exchange, and CORBA (DIIOP) on Lotus Domino.