DOCUMENT:Q153758  19-DEC-1999  [exchange]
TITLE   :XCON: Dynamic RAS Error Msg: An Interface Error Has Occured
PRODUCT :Microsoft Exchange
PROD/VER:winnt:4.0,5.0,5.5
OPER/SYS:
KEYWORDS:kbusage exc4 exc5 exc55

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The information in this article applies to:

 - Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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SYMPTOMS
========

When you use the Dynamic RAS Connector between two Microsoft Exchange Servers
where Server A dials Server B to transfer mail and Server A disconnects after
20-30 seconds, the Windows NT Event Log might show the following event:

   An interface error has occurred. An MtaBindBack over RPC has failed. Locality
   Table (LTAB) index: 5, NT/MTA error code: 1723. [BASE IL INCOMING RPC 190
   507] (14).

The same connection might be successful if Server B dials Server A.

CAUSE
=====

Either the Override Account Information on the RAS Connector override tab is
incorrect or Windows NT Service Pack 4 has not been properly installed. The
latter might occur if protocols and components were added to the Windows NT 3.51
server after Service Pack 4 was installed.

RESOLUTION
==========

Either correct the Override Account Information or reinstall Windows NT 3.51
Service Pack 4.

NOTE: Service Pack 4 should be installed on the Microsoft Exchange Server that is
not accepting the connection.

MORE INFORMATION
================

For additional information, please see the following articles in the Microsoft
Knowledge Base:

   Q130069 SERVICES.EXE Fails With Access Violation and Returns RPC Busy...

   Q126401 Err Msg: "Not Enough Server Storage is Available to Process..."

Additional query words: 4.00 RAS 1723 MTA NT

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Keywords          : kbusage exc4 exc5 exc55 
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version           : winnt:4.0,5.0,5.5
Issue type        : kbprb

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