XADM: Exchange Administrator Program Stops Responding When Connecting to an Exchange Server Computer over the Internet

• Microsoft Exchange Server, versions 4.0, 5.0, 5.5

SYMPTOMS

When you connect to an Exchange Server computer over the Internet, the Exchange Server Administrator program (Admin.exe) stops responding (hangs). In Task Manager, the Administrator program is listed as "Not responding."

MORE INFORMATION

Troubleshooting Steps:

1. Ping the Exchange Server computer by name to verify successful name resolution. If necessary create a HOSTS file for troubleshooting purposes.



2. Statically map the ports for the information store, directory service, and system attendant on the Exchange Server computer.


For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

Q155831 XADM: Setting TCP/IP Ports for Exchange and Outlook Client Connections Through a Firewall

3. Configure any firewall or router involved to allow TCP connections to be made to the ports mapped for the information store, directory, and system attendant, as well as to port 135. Exchange Server uses a well-known static port (port 135) to listen for Administrator connections to the remote procedure call (RPC) Endpoint Mapper Service. However, after the Administrator program connects to this socket, Exchange Server then re-assigns the program three random ports to use when communicating with the information store, directory, and the system attendant. This makes it impossible to allow these through the firewall without forcing them to be statically assigned.


For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

Q148732 XADM: Setting TCP/IP Port Numbers for Internet Firewalls

Additional query words:

Keywords : exc4 exc5 exc55
Version : winnt:4.0,5.0,5.5
Platform : winnt
Issue type : kbprb