Linux Exchange Servers
Let’s have a detailed look at the Exchange server features at first before diving deep into the fields of servers, clients, and viewers. The following is a brief summary of what we get with an Exchange server:
- E-mail (sending, receiving, storing)
- Address Book (Global Address Book)
- Spam/junk e-mail filtering
- Calendaring (sharing, publishing free/busy information, public/private categorization)
- Centralized Management
- In/out of office access (through clients and web browsers)
All of the competitors have these features, but they differentiate themselves with additional ones. For example E-Groupware offers a project manager, time sheet, wiki, resource management, knowledge base, news admin, polls and shared bookmarks, Citadel offers a mailing list server, built-in instant messaging service, SSL/TLS encryption for all protocols (you can read How to Build a Linux Collaboration Server article for detailed guidance on setting up the Citadel Server), Horde offers customizable portal screen that has applets like weather, quotes etc., Zimbra offers Microsoft Active Directory integration, Kolab offers client-side full support for S/MIME E-mail encryption and and Open X-Change offers document management as additional features.
As we can easily see, the first step in choosing the right Exchange Server for Linux is to make a detailed list of requirements: our business model, what features/functions are required and the like; for example, a transportation company may not need the code tracking function that a software development company requires. Once we have our detailed requirements, then we move on to select our client.