Method 1: RPCDUMP

Brien Posey

Most Exchange Server communications are based on Remote Procedure Calls (RPCs). If you are interested in finding out which ports are in use by RPC functions, you can use a utility called RPCDUMP.

According to Microsoft, RPCDUMP is a part of the Windows Server 2003 Resource Kit. However, the utility was available on my test server without me having to install the kit. If you need a copy of RPCDUMP, you can download it as part of the

    Requires Free Membership to View

Windows Server 2003 Resource Kit Tools.

To use RPCDUMP to report on port usage, enter the following command:


Be prepared though. RPCDUMP gives you a whole lot of information related to port and RPC usage. Figure A shows a small portion of this output.

Figure A

This is a fraction of the information produced by running the RPCDUMP /V command on an Exchange server.

Tutorial: How to determine which ports Exchange Server is using

 Home: Introduction
 Method 1: RPCDUMP
 Method 2: Netstat
 Method 3: Tasklist



Brien M. Posey, MCSE
Brien is a Microsoft Most Valuable Professional for his work with Windows 2000 Server and IIS. He has served as CIO for a nationwide chain of hospitals and was once in charge of IT security for Fort Knox. As a freelance technical writer, he has written for Microsoft, TechTarget, CNET, ZDNet, MSD2D, Relevant Technologies and other technology companies.

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: