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Hi All,<br />
I need to work out what licenses required to provide hosted exchange services to clients. they would only have access to their email hosted in a DataCentre using outlook as the email client on their own PC or laptop. As I understand we need a Windows 2008 Server and an Exchange CAL for each user. &nbsp;<br />
What else is required? <br />
Do they need a windows CAL? 
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Hi All,
I need to work out what licenses required to provide hosted exchange services to clients. they would only have access to their email hosted in a DataCentre using outlook as the email client on their own PC or laptop. As I understand we need a Windows 2008 Server and an Exchange CAL for each user.  
What else is required? 
Do they need a windows CAL? 

Hosted Exchange Services - what is required

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.