Microsoft KB Archive/246746

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XCON: MODE STREAM Extension Support for NNTP

Article ID: 246746

Article Last Modified on 2/27/2007


  • Microsoft Exchange 2000 Server Standard Edition

This article was previously published under Q246746


Microsoft Exchange 2000 Server has added support for the MODE STREAM extension to the Network News Transfer Protocol (NNTP). This support upgrades the performance in Microsoft Exchange 2000 Server significantly.


NNTP is a TCP/IP protocol based upon text strings that are sent bidirectionally over 7-bit ASCII TCP channels. The Internet Engineering Task Force (IETF) owns the NNTP protocol, which is specified in Request for Comments (RFC) 977. IETF makes periodic changes by defining extensions to the protocol.

MODE STREAM is a transport extension and is used by a peer to indicate to the server that it wants to suspend the lock step conversational nature of NNTP and send commands in streams.

Two responses are possible for a MODE STREAM command:

203 Streaming is OK


500 Command not understood

Additional query words: nntp

Keywords: kbinfo KB246746