XFOR: Changing the NNTP Port
ID: Q174199
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The information in this article applies to:
- Microsoft Exchange Server, version 5.5
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IMPORTANT: This article contains information about editing the registry.
Before you edit the registry, make sure you understand how to restore it
if a problem occurs. For information on how to do this, view the "Restoring
the Registry" online Help topic in Regedit.exe or the "Restoring a Registry
Key" online Help topic in Regedt32.exe.
SUMMARY
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The Services file, located in the %SystemRoot%\system32\drivers\etc folder,
contains a list of well-known port numbers for TCP/IP services. Microsoft
Exchange Server uses the Services file to determine which TCP port is used
for accepting or initiating NNTP connections. This article tells you how to
change the NNTP port used.
MORE INFORMATION
================
For connections using SSL, the port number associated with the snews
service is used; for all other connections, the port number associated with
the nntp service is used.
To change the port number used by the server:
- Edit the services file and change the port number associated with these
services. The default port numbers for the snews and nntp services are
563 and 119, respectively.
You can also force the Internet News Service to connect to a specific port
number when making an outbound connection for a newsfeed. This is useful
when traversing a firewall that can map port numbers to different
destination hosts on the Internet. To specify the port number for outbound
connections, you need to edit the registry.
WARNING: Using Registry Editor incorrectly can cause serious problems that
may require you to reinstall Windows. Microsoft cannot guarantee that
problems resulting from the incorrect use of Registry Editor can be
solved. Use Registry Editor at your own risk.
For information about how to edit the registry, view the "Changing Keys And
Values" online Help topic in Registry Editor (Regedit.exe) or the "Add and
Delete Information in the Registry" and "Edit Registry Data" online Help
topics in Regedt32.exe. Note that you should back up the registry before
you edit it.
To specify the port number for outbound connections:
1. Create the newsfeed.
2. Create the following REG_DWORD registry value and set it to a value
between 1 and 65535:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeINS
\Parameters\Newsfeeds\Newsfeed Test\PortNumber
The Newsfeed Test registry value should be replaced with the name of the
newsfeed you want to customize. If this registry value exists, it overrides
the value in the Services file for any outbound NNTP connections for that
newsfeed. It does not affect the port number used for accepting inbound
NNTP connections. That is always obtained from the Services file.
If you plan to specify a custom NNTP port, you may not be able to download
the active newsgroup list from your news provider with the Newsfeed
Configuration Wizard because the registry value does not exist at that
point. Instead, you should import it from a file or download the active
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Keywords : kbusage XFOR
Version : winnt:5.5
Platform : winnt
Issue type :
Last Reviewed: November 25, 1997