Exchange Server 2003 Product Overview
To compete successfully in today's challenging business climate, organizations
must enable more efficient ways for information workers to communicate and
collaborate. E-mail is currently the most widely used collaborative technology.
More businesses use Exchange for e-mail-based collaboration than any other
product. Exchange 2003 enables information workers to gain access to
critical business communications almost whenever and wherever they need to and
is designed to deliver greater security, availability, and reliability.
Exchange 2003 sets a new benchmark for low total cost of ownership (TCO)
by helping your information technology (IT) staff to do more with less through
improved management tools.
If you're in an Exchange Server 5.5 environment, Exchange 2003 offers
large costs savings by operating on fewer servers. With new resources and
tools, the upgrade and migration to Exchange 2003 is smooth, fast, and
Exchange 2003 is available in two editions:
Exchange 2003 Standard Edition is designed to meet the messaging
and collaboration needs of small and medium-size corporations. With
Exchange 2003 Standard Edition, you get:
The flexibility to be configured as a Microsoft Office Outlook® Web Access
16-gigabyte (GB) data storage maximum.
Recovery Storage Group.
Exchange 2003 Enterprise Edition is designed for large enterprise
corporations and enables you to create multiple storage groups and multiple
databases. Exchange 2003 Enterprise Edition provides an unlimited message
store that removes the constraints on the amount of data that a single server
can manage. With Exchange 2003 Enterprise Edition, you get:
All the features and products included in Exchange 2003 Standard Edition.
Database size limited only by your hardware (with a maximum size of
Multiple databases per server.
Clustering support for four nodes on Microsoft Windows® 2000 Advanced
Server or eight nodes on Microsoft Windows Server™ 2003 Enterprise
To determine which edition best suits your business needs, explore the tables on
Choose Your Edition page.
Features at a Glance
|Active Directory integration
Integrated with Windows Server 2003 or Windows 2000 Active Directory®
directory service for lower TCO
Single-seat administration with Microsoft Management Console (MMC)
Policies for quickly changing a wide range of objects such as mailboxes
Use of Windows Server 2003 system access control lists (SACLs) to make
secure e-mail messaging and collaboration easy
Windows Active Directory Migration Tool (ADMT) 2.0 helps ease the
migration of Microsoft Windows NT® Server 4.0 accounts to Active
Directory with its password migration
|Scalable database architecture
Up to 16 GB per mailbox database and up to 20 mailbox databases per server
Multiple message databases per server running Exchange for fast backup and
restore, flexible data management, and increased reliability
||Organizations do not have to upgrade or migrate
overnight. Exchange 2003 operates with Windows 2000 or Windows
Server 2003 and coexists with Exchange 5.5 and Exchange 2000, all
within the same topology.
Exchange 2003 also operates with Microsoft Office Outlook 2003,
Outlook 2002 (Office XP), and Outlook 2000. Outlook Web Access
can be used on other client platforms through browsers.
Secure defaults (for example, Simple Mail Transfer Protocol [SMTP] relay, Post
Office Protocol 3 [POP3], and Internet Message Access Protocol [IMAP] are
turned off by default)
Improved ability to restrict connections and e-mail messages
Support for Outlook Web Access automatic logoff, Secure/Multipurpose Internet
Mail Extensions (S/MIME), HTML, and attachment blocking
New antispam features and integration with Office Outlook 2003 Safe and
Block Sender lists
New Virus Scanning API 2.5 for improved antivirus solutions
Support for Windows Server 2003 Internet Information Services
(IIS) 6.0, which isolates applications
|Low TCO messaging and collaboration environment
Multiple database architecture enables new consolidation opportunities for
users of Exchange 5.5
Enhanced administrative tools for mailbox management
New client logging and error reporting tools for faster problem resolution
Integration with Windows Server 2003 Volume Shadow Copy service for fast,
reliable backup and restore
|Outlook Web Access
||New, enhanced Outlook Web Access for fast access
to Exchange from the Internet and with greater security. The new user interface
(UI) is updated to mirror the Outlook 2003 UI and includes new features
such as spelling checker, tasks lists, S/MIME support for security, and HTML
content blocking for security.
|Integrated support for mobile devices
Windows powered mobile devices can synchronize directly with Exchange 2003
for enhanced security
Integrated support for HTML, Extensible HTML (XHTML), Wireless Application
Protocol (WAP) 2.x, and compressed HTML (CHTML) mobile
|Integration with Outlook 2003
Enhanced performance and Exchange Cached Mode enables use over low bandwidth as
well as over latent and poor network connections
Improved UI enables users to prioritize overloaded Inboxes
Improved virtual memory management
Improved Outlook performance logging to the server
Faster cluster failover times with Windows Server 2003
Support for four-node and eight-node clusters
Support for Windows Server 2003 IIS 6.0, which isolates applications
New resources and prescriptive guidance on deployment
New premigration analysis and reporting tools
New Active Directory Migration Tools (ADMT 2.0)
Active Directory Connector Wizard
Internet Mail Setup Wizard
Mailbox and public folder migration tools
For more information about Exchange 2003 features and abilities, see the
Exchange 2003 Features page.
Technology Components for More Secure Client Access
Exchange 2003 is designed to interoperate with multiple clients.
In Figure 1, each client is shown accessing Exchange 2003 through the
Internet and secured by a combination of firewalls and, in this particular
case, Microsoft Internet Security and Acceleration Server (ISA Server) acting
as a gateway with enhanced security for Exchange and other server
Outlook 2003, Outlook 2002, and Outlook 2000 can connect to
Exchange 2003*. Outlook 2003 and
Exchange 2003 are designed to perform over slow, latent, or poor network
connections. Examples are dial-up lines and wireless data links such as 1xRTT
and General Packet Radio Service (GPRS). New Outlook 2003 features
Exchange Cached Mode.
VPN-less connections that use the new remote procedure call (RPC) over HTTPS
capability in Outlook 2003.
Outlook Web Access in Exchange 2003 has been improved for easier use,
speed, and greater security. The popularity of Outlook Web Access is in part
because the product is easy to support and use and no installation is
necessary. Any browser-based computer can access Exchange with greater
security, and, with the new UI, most users have to look twice to see if they
are using Outlook 2003 or Outlook Web Access. The features include:
Task list support
HTML and attachment blocking (prevents spam and potential beacon-finding code)
Automatic logoff (Forgot to logoff? Don't worry—the inactivity time-out
automatically logs off and closes out your session.)
You also get support for S/MIME in Outlook Web Access so that you can digitally
sign and encrypt your e-mail messages.
Exchange Server ActiveSync
Windows powered mobile devices, such as the
Pocket PC, come with the Microsoft ActiveSync® client and Pocket
Outlook built in, which enables you to sync your e-mail messages, calendar, and
contacts lists directly with Exchange 2003. Exchange administrators can
enable this from the same screen used to manage Exchange e-mail accounts.
Outlook Mobile Access
Similar to Outlook Web Access for desktop browsers, Outlook Mobile Access is
designed for security-enhanced access from mobile device browsers. With
Exchange 2003, users can gain access to their mailboxes from mobile
devices with HTML, XHTML (WAP 2.x), and CHTML-based microbrowsers.
Pervasive Productivity Scenarios
The flexible options for information access and the new ways to stay connected
enable information workers to be more productive and in control when and how
such as sales and service staff using portable computers and running
Outlook 2003 over a wireless network, are free to roam and communicate. No
longer tethered to a cable, they can check their e-mail messages, look up their
contacts and schedules, and continue to communicate with their customers,
partners, and coworkers wherever and whenever they choose—in the car, at their
customer's location, or even at the airport. Outlook 2003 is designed to
work over slow and poor network connections: Mobile workers are shielded from
network issues and can continue working with their Exchange information while
Exchange and Outlook use the available network resources.
can work at home, a remote office, a customer site, an 802.11 hot spot such as
their local Internet café, and can start Outlook or use Outlook Web Access from
any Internet-connected computer to gain security-enhanced access to Exchange.
Outlook Web Access adds more freedom by enabling them to stay in touch through
Exchange without their own portable computer. Outlook Web Access extends the
latest features in Exchange 2003 to any browser-based computer, including
non-Microsoft operating systems. And because Outlook Web Access doesn't need
installation, your IT departments can reduce support costs.
Traveling executives can run Outlook 2003 from their hotel or
between flight connections over a dial-up line and synchronize their e-mail
messages. With the latest synchronized Exchange data, they can continue working
offline until their next opportunity to dial in and reconnect.
Outlook 2003 and Exchange 2003 help them to be productive online and
Don't want to carry a portable computer? Pocket PC, Pocket PC Phone Edition, and
Windows powered Smartphones enable you to synchronize your wireless device
directly to Exchange. E-mail messages, contacts, schedules, and attachments are
at your fingertips.
Cost Savings with Exchange 2003
The Exchange 2003 upgrade and administration tools increase your worker
productivity and help consolidate your servers to save you money.
For customers running Exchange 5.5, upgrading presents a great opportunity
to simplify operations, increase server availability and reliability, reduce
the time it takes to do backup and restores, and reduce the number of servers
for Exchange. This leads to lower TCO. Exchange 2003 takes the lead from
Exchange 2000 with a multiple database design (up to 20 databases per
server). Typical Exchange 5.5 organizations have 1,000–2,000 users per
server, limited primarily because of a single database architecture and the
time required for backup and restore operations and management. With
Exchange 2003, however, the number of supported users and mailboxes can
easily be in the 3,000–5,000 range or more, depending upon the user profiles,
message traffic patterns, and mailbox size limitations.
Exchange 2003 is designed to help your messaging IT staff to be more
productive. Ongoing administration of an Exchange environment represents about
20–25 percent of TCO for Exchange. Typical tasks include backup and restore;
new mailbox setup; recovery; moves; implementing new hardware, storage,
software, and tools; and applying updates and fixes. New and enhanced tools
help your IT staff to do their job more efficiently. For example, an executive
might need to recover an old, but very important, e-mail message that was
deleted a few months ago. By using the new Recovery Storage Group, an
administrator can recover an individual user's mailbox to find the important
e-mail message that was previously deleted. Other new administrative features
Move multiple mailboxes in parallel.
Improved message tracking and Outlook client performance logging.
Enhanced queue viewer that enables both SMTP and X.400 queues to be seen from
the same console.
New query-based distribution lists that now support dynamic, real-time lookups
In addition, Exchange Management Pack for Microsoft Operations Manager automates
the monitoring of your entire Exchange environment, enabling proactive
management and rapid resolution of Exchange issues.
Sample Scenario: Migrating to Exchange 2003 from Exchange 5.5
Schedule your move to Exchange 2003 to match your schedule and budgets.
Exchange 2003 can operate on either Windows 2000 or Windows
Server 2003 and is designed to interoperate with Exchange 5.5 and
New tools and resources help you migrate from a Windows NT 4.0 and
Exchange 5.5 environment to a Windows and Exchange 2003 environment
more smoothly, easily, and quickly.
Walk through the entire migration process with the prescriptive guidance.
Before migration, new tools can be used to receive a full report on the
existing Exchange 5.5 topology, including sites, servers, mailboxes, and
public folders. Active Directory Migration Tool 2.0 is used to migrate
Windows NT account passwords to the new Windows Active Directory
environment. Tools can also be used to validate that Active Directory is
implemented and working properly and that the Exchange components have been
To implement Active Directory Connector (ADC), designed so that existing
Windows NT 4.0 and Exchange 5.5 directory information can replicate
to the new Exchange and Windows environment, the new ADC Wizard helps to ease
and automate the setup and connection agreements between the Exchange 5.5
and new Windows and Exchange 2003 organizations.
The new mailbox and public folder migration tools enable fast and productive
moves of the individual mailboxes to Exchange 2003. You and your IT
organization will find that the new resources and tools enable a more
productive, quicker, and less disruptive migration.