Exchange Server 5.5 SP1 due soon

"Pilgrim" (Move Server) - Enables an Exchange system, for whatever reason, to change it base-level organization context. That is, enable an Exchange Server to be migrated from one site to another site within the same organization.

KMS/SMIME Support - KMS will support 509 V3 by using Microsoft's Certificate server in the generation of new certificates. KMS will also support secure messaging between organizations through trust lists that are shared between organizations.

Web forms - Enable forms to be viewed by clients who are accessing Exchange through a Web browser. Exchange forms will be converted to standard HTML format.

The administration interface will provide access to functionality that is currently built into Exchange 5.5 to help with "message spamming" features. These spamming features are "Message Turfing", which controls who uses the IMC for relaying, and "Span Control", during the IMC Setup Wizard.

Add an additional BCC Recipient to allow customers to provide a long-term archive of all mail sent within Exchange.

CDO 1.21 - Collaborative Data Objects (CDO) client-side support: the CDO library has now been tested for use on clients and servers (CDO 1.2 only supported servers). CDO 1.21 can be installed on a NT server without the need of installing Exchange Server on the same box. This would be useful for IIS applications running on a separate NT server that would like to access Exchange.

The message store will report free space as an event log entry once a day.

Outlook Web Access (OWA) will be adding some new features including the ability to check names, view Contacts, and change passwords.