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 MS Exchange 2003

Exchange 2003 Feature Comparison
Compare the features available in Exchange Server 5.5 and Exchange 2000 Server to those available in Exchange Server 2003

Disaster Recovery

Key: Feature included = Feature included  Feature not included = Feature not included

Features Exchange Server 5.5 Exchange 2000 Server Exchange Server 2003
Clustering
Two-node clustering Feature included Feature included Feature included
Four-node clustering Feature not included Feature included Feature included
Eight-node clustering Feature not included Feature not included Feature included
Cluster failover time improvements Feature not included Feature not included Feature included
Storage
Mount points overcome the 26-drive letter limitation Feature not included Feature not included Feature included
Standard storage area network (SAN) connectivity Feature not included Feature included Feature included
Backup and Restore
Standard backup with non-Microsoft hardware Feature not included Feature included Feature included
Database backup (Volume Shadow Copy service) Feature not included Feature not included Feature included
Mailbox Recovery Center tool Feature not included Feature not included Feature included
Restore Storage group Feature not included Feature not included Feature included

Performance

Key: Feature included = Feature included  Feature not included = Feature not included

Features Exchange Server 5.5 Exchange 2000 Server Exchange Server 2003
Memory Allocation Improvements
2-gigabyte (GB) standard allocation Feature not included Feature included Feature included
3-GB user mode Feature not included Feature included Feature included
/USERVA memory switch (requires Microsoft Windows Server™ 2003) Feature not included Feature not included Feature included
Public Folders
Public folder store replication improvements Feature not included Feature not included Feature included
E-Mail
Distribution list caching improvements Feature not included Feature not included Feature included
Suppression of Out of Office messages to distribution lists Feature not included Feature not included Feature included
Microsoft Office Outlook® 2003–cached Exchange Server mode Feature included Feature included Feature included

Security

Key: Feature included = Feature included  Feature not included = Feature not included

Features Exchange Server 5.5 Exchange 2000 Server Exchange Server 2003
Server
Internet Protocol security (IPSec) support for front-end and back-end clusters Feature not included Feature not included Feature included
Cross-forest Kerberos authentication with Outlook 2003 (requires Microsoft Metadirectory Service [MMS] and Outlook 2003) Feature not included Feature not included Feature included
Signed Lightweight Directory Access Protocol (LDAP) requests to Active Directory® directory service Feature not included Feature included Feature included
Front-end and back-end Kerberos authentication Feature not included Feature not included Feature included
Internet Information Services (IIS) 6.0 security and dedicated application mode Feature not included Feature not included Feature included
E-Mail
Distribution lists are restricted to authenticated users Feature not included Feature not included Feature included
Real-time Safe and Block lists Feature not included Feature not included Feature included
Inbound recipient filtering Feature not included Feature not included Feature included
Advanced junk e-mail message filtering and protection (requires Outlook 2003) Feature included Feature included Feature included
Exchange Server Intelligent Message Filter advanced junk e-mail message filtering Feature not included Feature not included Feature included
Virus Scanning API 2.5 (requires non-Microsoft antivirus software) Feature not included Feature included Feature included
Attachment blocking in Microsoft Office Outlook Web Access Feature not included Feature not included Feature included
Public folder permissions improvements for unknown users Feature not included Feature not included Feature included
Restricted submissions improvements Feature not included Feature not included Feature included

Mobility

Key: Feature included = Feature included  Feature not included = Feature not included

Features Exchange Server 5.5 Exchange 2000 Server Exchange Server 2003
Outlook Web Access
Outlook Web Access user interface (UI) and feature set improvements Feature not included Feature not included Feature included
Outlook 2003 performance improvements through MAPI compression Feature not included Feature not included Feature included
HTTP access from Outlook 2003 (requires Windows Server 2003) Feature not included Feature not included Feature included
cHTML, xHTML, and HTML mobile phone browser support Feature not included Feature not included Feature included
Exchange Server ActiveSync® Feature not included Feature included Requires Microsoft Mobile Information Server Feature included
Pocket PC and Smartphone support Feature not included Feature included Requires Mobile Information Server Feature included
Up-to-date notifications synchronization (requires Microsoft Windows Mobile™–based devices such as Pocket PC and Smartphone) Feature not included Feature not included Feature included
Outlook Mobile Access
Outlook Mobile Access user interface (UI) and feature set improvements¹ Feature not included Feature not included Feature included


¹ Requires Exchange Server 2003 Service Pack 1 (SP1)

Collaboration

Key: Feature included = Feature included  Feature not included = Feature not included

Features Exchange Server 5.5 Exchange 2000 Server Exchange Server 2003
Real-time collaboration (requires Microsoft Office Live Communications Server 2003, the next generation of enterprise instant messaging solutions) Feature not included Feature includedMigration from Exchange 2000 Server Instant Messenger² and Exchange 2000 Conferencing Server³ to Live Communications Server 2003 is required Feature includedMigration from Exchange 2000 Server Instant Messenger² and Exchange 2000 Conferencing Server³ to Live Communications Server 2003 is required
Microsoft SharePoint® Portal Server Web Parts (requires SharePoint Portal Server and/or Microsoft Windows® SharePoint Services) Feature not included Feature included Feature included
Advanced managed, remote accessible application programming interface (API) for collaborative application development Feature not included Feature not included Feature included


² If your company is licensed for Exchange Server (Server License and Client Access Licenses [CALs]) and also has Software Assurance or an Enterprise Agreement that was signed and valid as of October 1, 2003, then you are entitled to an equivalent number of Live Communications Server 2003 CALs and/or Server Licenses at no cost. Contact your Microsoft account representative for more information.

 ³ Exchange 2000 Conferencing Server has been discontinued. For additional information, review the Exchange 2000 Conferencing Server and Office Live Communications Server and Office Live Meeting Frequently Asked Questions.

 

Manageability

Key: Feature included = Feature included  Feature not included = Feature not included

Features Exchange Server 5.5 Exchange 2000 Server Exchange Server 2003
Administration
Exchange Server System Manager running on Windows XP Feature not included Feature included Feature included
Queues are centralized on a per-server basis Feature not included Feature not included Feature included
UI improvements Feature not included Feature not included Feature included
All system queues are exposed Feature not included Feature not included Feature included
Cookie authorization enablement Feature not included Feature not included Feature included
Move log files and queue data using Exchange Server System Manager Feature not included Feature not included Feature included
Public folder Send hierarchy Feature not included Feature not included Feature included
Public folder Search capabilities Feature not included Feature not included Feature included
Public folder Send Contents Feature not included Feature not included Feature included
Public folder affinity to control referrals Feature not included Feature not included Feature included
Public folder migration from Exchange Server 5.5 to Exchange Server 2003 Feature not included Feature not included Feature included
Multi-user Move Mailbox function Feature not included Feature not included Feature included
Dynamic distribution lists Feature not included Feature not included Feature included
Management
Multiple Windows forest support (requires MMS) Feature not included Feature included Feature included
Automatic error reporting Feature not included Feature included Feature included
1,700 Exchange Server–specific events using the Exchange Management Pack for Microsoft Operations Manager (MOM) (requires MOM) Feature not included Feature not included Feature included
Deployment
Deployment and migration tools Feature not included Feature not included Feature included
Active Directory Connector improvements Feature not included Feature not included Feature included
Internet Mail Connection Wizard Feature not included Feature not included Feature included
Multiple Mailbox Move tool Feature not included Feature not included Feature included

Development

Key: Feature included = Feature included  Feature not included = Feature not included

Features Exchange Server 5.5 Exchange 2000 Server Exchange Server 2003
Collaboration Data Object (CDO) Feature not included Feature included Feature included

 
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