Difference between Exchange 2003 and 2007

Exchange Server 2003

Exchange Server 2003 may be run on the Windows 2000 Server if the fourth service pack has already been installed. It may also be run on 32 bit Windows Server 2003. There is a new disaster recovery feature that is even better than before. It allows the server to experience less downtime. The Exchange Server 2003 received some features form Microsoft Mobile Information server as well. These include Outlook Mobile Access as well as ActiveSync. Improved versions of anti-spam and anti-virus were also included. Management tools for mailboxes and messages have been improved and Instant Messaging and Exchange Conferencing Server are now separate products. There are two versions available of Exchange Server 2003. These include the Enterprise edition and the Standard edition. There are many other features that are available on Exchange Server 2003.

Exchange Server 2007

When Exchange Server 2003 was released there were no immediate plans as to what would happen to the product. A 2005 edition was dropped and it was not until the end of 2006 that the new version was released. Some of the new features included integration of voicemail, improved filtering, Web service support, and Outlook Web Access interface. The new edition was run on a 64 bit x 64 version of Windows Server. This increases the performance significantly. There are quite a few improvements to Exchange Server 2007. These include better calendaring, improved web access, unified messages, and better mobility. From a system protection standpoint there is more clustering, antivirus, anti spam, and compliance included. The IT experience is improved overall with a 64-bit performance. Deployment is better; routing is simplified as well as the command line shell and GUI.

There have been many changes and improvements to the Exchange Server 2007 and it is better than ever. There are no definite plans as to what Microsoft has in store for Exchange Server but the next version will certainly be better than ever.

What is the Difference between Exchange 2003 and 2007?

Exchange 2003 and 2007 difference

· 2003 is 32 bit
· Single server base, No roles base
· Outlook Mobile Access (or OMA)
· Active sync
· Up-To-Date Notifications

Exchange 2003 with SP2

· Direct Push
· Global Address List lookup
· Mobile Admin

2007 exchange server Enhanced and Newly added features

· Has Power full command line Power shell for configuration
· Most of configuration is done through power shell
· Fast message retrieval
· Follow-up flags
· Meeting attendee information
· Enhanced Exchange Search
· Windows Share Point and file share document access
· Reset PIN/Password
· Enhanced PPC security
· Autodiscover for over the air (OTA) provisioning
· Out of Office
· Support for HTML messages

Missing/ Removed features in 2007 RTM due to stability Issue but available in SP1

· Information Rights Management (IRM)
· Support for S/MIME

Completely Removed Feature

· Outlook Mobile Access (OMA)

Exchange 2007 has Role base Infrastructure. These are:

Mailbox Role

· Stores Mailboxes and Public folder
. Client Access Client request for mail are fetched by this Role
· Browser-based clients using either the full-featured Outlook Web Access (OWA) or a new OWA Light client
· Mobile devices via Exchange ActiveSync (EAS)
· Phone devices via Outlook by Phone
· POP3 or IMAP4 clients, such as Outlook Express and Eudora

Hub Transport
Responsible for all internal mail flow

Inbound mail are accepted by Edge Transport and passed on to Mailbox server and all outbound mail is relayed from the Hub Transport to the Edge Transport and out to the Internet.

Edge transport

Edge Transport server handles all Internet-facing mail flow, which provides Simple Mail Transfer Protocol (SMTP) relay and smart host services for the Exchange organization.

Unified Messaging

Unified Messaging combines email, voicemail and fax into the Exchange Server databases, and makes this data available to mailbox users via both telephone and computer.

Exchange 2007 System Requirements

PROCESSER

· x64 architecture-based computer with Intel processor that supports Intel 64 architecture
· AMD processor that supports the AMD64 platform
· Intel Itanium IA64 processors not supported
· Intel Pentium or compatible 800-megahertz (MHz) or faster 32-bit processor (for testing and training purposes only; not supported in production)

Memory

· Minimum: 2 gigabytes (GB) of RAM for Single Roles
· 5 GB of RAM. if Roles are installed on single server.
· 8 megabytes (MB) of RAM per mailbox
· Minimum based on number of storage groups

Disk space

· At least 2.5 GB on the drive on which you install Exchange
· An additional 500 MB of available disk space for each Unified Messaging (UM) language pack that you plan to install
· 200 MB of available disk space on the system drive
· In Exchange 2007 RTM, a hard disk drive that stores the message queue database on an Edge Transport server or Hub Transport server with at least 4 GB of free space
· In Exchange 2007 SP1, a hard disk drive that stores the message queue database on an Edge Transport server or Hub Transport server with at least 500 MB of free space
· Disk partitions formatted as NTFS file systems.

Upgrade Tip

· It is not supported to upgrade Exchange 2007 RTM to Exchange 2007 SP1, and then upgrade your operating system to Windows Server 2008.
· Complete Fresh Installation of Ex-2007-SP1 on 2008 is supported