Microsoft KB Archive/233206

= XGEN: Dealing with System Messages Between Exchange 2000 Server Computers =

PSS ID Number: 233206

Article Last Modified on 11/5/2003

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The information in this article applies to:


 * Microsoft Exchange 2000 Server

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This article was previously published under Q233206



SUMMARY
When system messages (non-delivery reports [NDRs] and public folder replication messages) are exchanged between Exchange 2000 Server computers, the conversation between the servers is of a slightly different nature than when regular mail messages are exchanged.



MORE INFORMATION
The difference in conversation between the Exchange 2000 Server computers when handling system messages is implemented specifically to get around the possibility that either Exchange 2000 Server computer might have a protocol level message size limit set. In general, if a received system message exceeds the message size limit on the receiving server, the system message generates an NDR.

A new verb in the Simple Mail Transfer Protocol (SMTP) protocol (X-EXCH50) has been introduced to provide a method of overcoming the incoming message size limits that may exist on a server.

When the Exchange 2000 Server computer sends a system message, it issues the X-EXCH50 command to signal that it is sending a system message before it issues the MAIL command. This allows the message to override the SMTP message size limitations that may be set on the receiving server.

Keywords: kbinfo KB233206

Technology: kbExchange2000Search kbExchange2000Serv kbExchange2000ServSearch kbExchangeSearch

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