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One of Windows sixty four-bit x86-64 editions is demanded to try Exchange Server 2007 (v8 or v8.1 with SP1 available). Still just 32 bits are required for the trial version of this program. If there are any companies applying Exchange Server with thirty-two-bit equipment, they'll be informed of the necessity to upgrade their equipment in a certain period. Still hardware is not the only point. Due to the fact that Exchange Server 2007 doesn't provide in-place upgrading some firms using software of 2000 and 2003 will need to upgrade to the edition of 2007.

E12, the 1st beta edition of Exchange Server 2007, was let out in December 2005 first for a little number of testers. Later in March 2006 the appearance of one more changed beta edition was realized. Developers of the software made it accessible via TechNet Plus and MSDN subscriptions. The coming version of the software was officially claimed to be called Exchange Server 2007 on April 25, 2006.

Exchange Server 2007 is one of the Innovative Communications Alliance developments. Below are the exchange host server roles to be features of the program edition of 2007.

1. The Role of Mailbox
It holds opeta and manages mail. The role is a feature to host public folder data and store personal mail. Mailbox has its modification. To use multi-functional MSCS clustering of information stored on PC Clustered Mailbox role is applied. Still it is impossible to combine other roles on the microsoft exchange server with this modification of Mailbox role.

2. Client Access or CA
The role doesn't apply MAPI, it is supposed for a different mailbox hosting protocol access. Applying internet browsers, mobile devices similar to ActiveSync or a third party mail agent is another feature of the role.

3. Unified Message or UM
With this role end users may read their messages, manage address books or anything with just a phone. But to make the UM work one should think of things like IP-PBX or VoIP gateway.

4. Hub Transport or HT
Hub Transport is designed to select the destination for each e-mail. They are resent to Edge, Mailbox and a different HT servers. Exchange 2007 classifies the message amounts using AD site data, which differs from the approach of 2003 when admin set routing groups were applied.

5. Edge Transport or ET
This is the 1st position for incoming mail and the last step for outbox. Specially to turn to e-mail quarantine this role is quite often used in some blackberry hosting. Edge Transport may as well function even in case it is not linked to any Active Directory. It provides security even with nothing more than corporative network.

UI and Server Role Features

Server role concept in fact sets the server settings for GUI and CMD. For every function there is its special role in Exchange 2007. You can check whether you have got Mailbox installed with an IsMailboxServer command. The function of the role is Get/Set-MailboxServer. And so that will be Get/Set-ClientAccessServer and IsClientAccessServer for Client Access role. Hub Transport role possessing functions Get/Set-TransportServer will be quickly checked with IsHubTransportServer. And commands like IsUnifiedMessagingServer and Get/Set-UmServer are referred to UM role.