http://technet.microsoft.com/en-us/library/dd298136(EXCHG.149).aspx
What's New in Exchange Server 2010
[This is pre-release documentation and subject to change in future releases. This topic's current status is: Writing.]
Applies to: Exchange Server 2010
Microsoft Exchange Server 2010 brings a new and rich set of technologies, features, and services to the Exchange Server product line. This topic includes a list of the new features and functionality that are included in Exchange 2010. The list isn't comprehensive, but it provides important information to use when you're planning, deploying, and administering your Exchange 2010 organization. This topic also includes information about some of the limitations of this release and features from Exchange Server 2007 that have been removed.
New Rights-Protected E-Mail Functionality with Active Directory RMS
The following is a list of new rights-protected e-mail functionality with Active Directory Rights Management Services (AD RMS) that has been included in Exchange 2010:
- Transport rules to apply AD RMS protection to messages based on conditions.
- Persistent protection of attachments in rights-protected messages.
- Support for AD RMS templates.
- An Internet confidential AD RMS template for protection over the Internet.
- AD RMS protection for Unified Messaging voice mail messages
New Transport and Routing Functionality
The following is a list of new transport and routing functionality that has been included in Exchange 2010:
- Cross-premises mail routing An organization can choose to outsource some of their mailboxes to a hosted solution while maintaining their on-premises deployment. For example, a university can choose to host the mailboxes for all faculty and staff in their on-premises deployment and use a hosted solution for student mailboxes. Exchange 2010 allows routing of messages between the on-premises and hosted mailboxes.
- Enhanced disclaimers Exchange 2010 lets you add disclaimers that can include hyperlinks, images, and HTML-formatted text. You can also insert Active Directory attributes that are substituted for the sender's attributes when a disclaimer rule is triggered.
- Transport rules integration with AD RMS Exchange 2010 gives you the ability to create rules that require AD RMS protection based on keywords or patterns.
- Moderated Transport Exchange 2010 provides an approval workflow for sending messages to recipients. When you configure a recipient for moderation, all messages sent to that recipient must go through an approval process.
- Shadow redundancy Messages that are submitted to an Exchange 2010 Hub Transport server are stored in the transport database until the next hop reports successful delivery of the message. If the next hop doesn't report successful delivery and it fails, the message is resubmitted for delivery.
- Transport Dumpster truncation based on log copy status When messages that are in the dumpster are replicated to all mailbox databases, they're removed from the dumpster.
- Latency SLA management Exchange 2010 Transport lets you measure service levels delivered relative to your service level agreement (SLA) goals. Exchange 2010 gives you the ability to measure latencies for each hop, as well as end-to-end latency.
- Transport database improvements Performance improvements in the Transport database result in reduced database I/O per second (IOPS) per message, which increases message throughput.
New Permissions Functionality
In Exchange 2010, Role Based Access Control (RBAC) has replaced the permissions model that was used in Exchange 2007. RBAC lets you define extremely broad or extremely precise permissions models based on the roles of you administrators and users.
For administrators and specialist users, management role groups define what these users can manage in the organization. Role groups associate role group members to a set of management roles that define what the members can do. By adding or removing users as members of role groups, and adding or removing role assignments to or from a role group, you can control what aspects of the organization the members can manage.
For end users, management role assignment policies define what users can configure on their own mailbox. Assignment policies are applied to every mailbox either by default or manually, and enable you to control whether users can change their personal information, contact information, distribution group membership, and so on.
Both group groups and role assignment policies are assigned management roles. Management roles control access to the cmdlets and parameters required to perform a task. For example, if a cmdlet exists on a management role, and that role is assigned to a role group, the members of that role group can then use that cmdlet.
For more information about RBAC, see Overview of Permissions.
New High Availability Functionality
Exchange 2010 integrates high availability into the core architecture of Microsoft Exchange to enable customers of all sizes and in all segments to be able to economically deploy a messaging continuity service in their organization.
Exchange 2010 includes many changes to its core architecture. The following features in Exchange 2007 and Exchange 2007 Service Pack 1 (SP1) no longer exist in Exchange 2010:
- Local continuous replication (LCR)
- Single copy clusters (SCC)
In addition to these features, the concept of a clustered mailbox server no longer exists in Exchange 2010. Two other features, cluster continuous replication (CCR) and standby continuous replication (SCR), have been merged and renamed as a set of new features in Exchange 2010: incremental deployment, continuous mailbox availability, database mobility, database copies, and database availability groups.
For more information about Exchange 2010 high availability features, see New High Availability and Site Resilience Functionality.
New Messaging Policy and Compliance Features
Exchange 2010 compliance features make retention independent of users' mailbox management and filing habits, and ensure retention policies are applied continuously. The following is a list of new messaging and compliance features that have been included in Exchange 2010:
- New interface for applying retention policies
- Auto tagging for retention policies
- Mailbox search features for cross-mailbox search with AQS support
- New transport rules predicates and actions
For more information, see New Messaging Policy and Compliance Functionality.
New Outlook Web App Features
The following is a list of new features in Outlook Web App in Exchange 2010.
- Favorites in the Navigation Pane
- Search folders
- Message filtering
- The ability to set categories in the message list
- Options in the Web management interface for Outlook Web App
- A side-by-side view for calendars
- Multi-client language support
- The ability to attach messages to messages
- Expanded right-click capabilities
- Integration with Office Communicator, including presence, chat, and a contact list
- Conversation view
- The ability to send and receive text (SMS) messages from Outlook Web App
- Outlook Web App mailbox policies
New Unified Messaging Features
The following is a list of new Unified Messaging features that have been included in Exchange 2010:
- Call answering rules
- Additional language support including in Outlook Voice Access
- Enhancements to name lookup from caller ID
- Voice mail preview
- Messaging Waiting Indicator
- Missed call and voice mail notifications using text messaging (SMS)
- Protected voice mail
- Incoming fax support
- Addressing to Groups (Personal Distribution Lists) support
- Built-in Unified Messaging administrative roles
For more information about the new Unified Messaging functionality and new voice mail features, see New Unified Messaging Functionality and Voice Mail Features.
Web Management Interface
The following is a list of the features available in the new Web management interface for Outlook Web App.
- Text messaging (SMS) integration
- Voice messaging integration
- Mailbox Search
- Additional proxy addresses for mailboxes
- Moderation and approval for distribution list submission
New Exchange Store and Mailbox Database Functionality
The following is a list of core store functionality that is included or has been changed in Exchange 2010:
- Storage groups are deprecated.
- Mailbox databases are no longer connected to the server object.
- Extensible Storage Engine (ESE) has many improvements for high availability, performance, and database mobility.
- The Exchange Store schema has been flattened.
- Enhanced reporting with Public Folders
For more information about these changes, see New Exchange Core Store Functionality.
New Mailbox and Recipient Functionality
The following is a list of the new mailbox and recipient functionality that is included or has been changed in Exchange 2010.
- Users can share information such as calendar free/busy and contacts with users who reside in a different organization
- Scheduling and configuring resource mailbox calendar processing has been improved
- You can now move a mailbox while the end user is still accessing it
- New parameters have been added to the distribution group cmdlets to allow users to create and manage their own distribution groups in Outlook Web App and Outlook 2010
- You can manage folder-level permissions for all folders within a user's mailbox
- Bulk recipient management has been expanded to allow you to bulk manage recipient properties
- You can send mail to recipients from the EMC
New Administration Functionality in the Exchange Management Console
The following is a list of the new core Exchange Management Console (EMC) features that have been included in Exchange 2010. The core EMC refers to new functionality that affects how you use the Exchange Management Console, not how you use specific features:
- Customer Experience Improvement Program (CEIP)
- Organizational Health
- Community and Resources
- Command logging
- Property dialog command exposure
- UI is RBAC aware
For more information about these features, see New Administrative Functionality in the Exchange Management Console.
New Administration Functionality in the Exchange Management Shell
The following is a list of features available in the new Exchange Management Shell:
- Remote administration With the new Shell, you can connect to remote Exchange 2010 servers across the network with only the Windows Management Framework installed, which includes Windows PowerShell. For more information, see Overview of Exchange Management Shell.
- RBAC integration The Shell works with RBAC to give you and your users access only to the cmdlets and parameters they're allowed to use. If your permissions don't allow you to configure a certain feature, you aren't given access to the cmdlets, parameters, or both, that manage that feature. For more information, see Understanding Role Based Access Control.
- Administrator audit logging Actions that result in the modification of Exchange organization configuration and other object properties in the Exchange Management Console, the Web management interface, and the Shell can now be logged for later review. For more information, see Overview of Administrator Audit Logging.
- Improved multiple-valued property syntax Instead of running multiple commands to add and remove values from a single property, you can now add and remove values with a single command line. For more information, see Multi-Valued Properties.
