Several of the Microsoft Exchange Server Tools have been updated.

Microsoft Exchange Server Disaster Recovery Analyzer Tool v1.0
Version: 6.5.7821
The Microsoft Exchange Server Disaster Recovery Analyzer Tool is designed for administrators who need to troubleshoot database mounting issues.

The Exchange Server Disaster Recovery Analyzer programmatically collects configuration data and header information from databases and transaction log files. The tool analyzes all headers and creates a detailed list of instructions explaining what the problem is, and how to resolve it.

Microsoft Exchange Server Profile Analyzer
Version: 06.05.7821
Collect estimated statistical information from a single mailbox store or across an Exchange Server organization.

Use the Microsoft Exchange Server Profile Analyzer tool to collect estimated statistical information from a single mailbox store or across an Exchange Server organization. The collected data can be used for such tasks as analyzing the performance and health of a server that has mailboxes, improving capacity planning models, and improving testing methodologies and tools.

Microsoft Exchange Server Jetstress Tool
Version: 06.05.7821
Use Jetstress to verify the performance and stability of a disk subsystem prior to putting an Exchange server into production. Jetstress helps verify disk performance by simulating Exchange disk Input/Output (I/O) load. Specifically, Jetstress simulates the Exchange database and log file loads produced by a specific number of users. You use Performance Monitor, Event Viewer, and ESEUTIL in conjunction with Jetstress to verify that your disk subsystem meets or exceeds the performance criteria you establish. After a successful completion of the Jetstress Disk Performance and Stress Tests in a non-production environment, you will have ensured that your Exchange 2003 disk subsystem is adequately sized (in terms of performance criteria you establish) for the user count and user profiles you have established. It is highly recommended that the Jetstress user read through the tool documentation before using the tool

Microsoft Exchange Server SMTPDiag Tool
Version: 06.05.7821
SmtpDiag is a troubleshooting tool designed to work directly on a Windows server with IIS/SMTP service enabled or with Exchange Server installed.

SmtpDiag is a troubleshooting tool designed to work directly on a Windows server with IIS/SMTP service enabled or with Exchange Server installed. It utilizes the same APIs as Windows and Exchange in order to diagnose configuration and connection issues involving SMTP and DNS.

Get them here.