Microsoft Exchange Server is a calendar and mail server that runs on the Windows operating system. It is accessible to both desktop and mobile users through a client application or internet browser. In addition to its email and calendar functions, Microsoft Exchange includes collaboration and voicemail tools.
Using Exchange allows for scheduling conveniences, such as receiving alerts about an upcoming meeting or automatically informing colleagues and clients that you are out of the office. The server allows for email access through both desktop and laptop computers as well as mobile devices. This level of convenience and accessibility increases customer responsiveness and supports team collaboration. Collaboration is also enhanced by the address book feature, which gathers all contact information in one place.
Microsoft Exchange has four components as part of its email service: the information store, the System Attendant (SA), Simple Mail Transfer Protocol (SMTP), and Active Directory (AD). The emails are located in the information store, which also has features for email organization and search. The SA provides directory lookup services, as well as monitoring and maintenance features. SMTP is a protocol that governs the sending of email; it includes rules to handle multiple server email relays and emails sent to non-Microsoft email clients. As the account manager for Microsoft networks, AD works with SA to keep the address book up to date.
Microsoft has released 10 versions of Exchange since the first version. Each version has included feature improvements as the software adjusts to take advantage of the new developments in hardware technology, network technology, and the increasing role of the internet.
The first version of Exchange, Microsoft Exchange Server 4.0 (so designated because Exchange took over from a product called Microsoft Mail 3.x), came out in June of 1996. It featured client/server communications instead of the previous file-sharing technology. Additionally, it stored both address and message information in a database.
Microsoft Exchange Server 5.0 was released in May 1997. It built on the multiprotocol architecture of Exchange by expanding the protocols it can work with, making it possible to connect with more internet information sources. Version 5.5, released in February 1998, had a number of enhancements, including faster data backups and deleted item recovery.
Microsoft Exchange Server 2000 followed in November 2000 and had a 16 GB storage limit. Customers could also opt for Microsoft Exchange 2000 Enterprise Server, which included support for multiple databases and no storage limit.
Exchange Server 2003 featured intelligent message filters and mailbox management services including a mailbox merge wizard. When Exchange Server 2007 came out, it added features such as spam filtering technology and Outlook Anywhere, making it easier for Outlook users to use the Exchange network.
Exchange Server 2010 added features such as the calendar repair assistant and end-to-end message tracking. Exchange Server 2013 featured additions including anti-malware protection and improved integration with Microsoft’s storage technology SharePoint. Exchange Server 2016 included better search capability and architecture to support mobile devices, along with faster failure and failover isolation.
The latest version is Microsoft Exchange Server 2019. Taking advantage of new hardware development, Exchange 2019 can support 48 CPU cores and 256 GB of memory, up from the 24 CPU cores and 192 GB memory limit in the previous version. This version of Microsoft Exchange can also be installed in the minimalist Windows server installation known as Windows Server Core.
