DOCUMENT:Q274285  06-AUG-2002  [exchange]
TITLE   :XCON: Error Message Occurs When Starting MTA
PRODUCT :Microsoft Exchange
PROD/VER::5.5
OPER/SYS:
KEYWORDS:kberrmsg exc55

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The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

When you attempt to start the Microsoft Message Transfer Agent (MTA), you may
receive the following error message:

   Could not start the Microsoft Exchange Message Transfer Agent service on
   \\<Servername>.

   Error 2140: An internal Windows NT error occurred

The following events may be reported in the application event log:

   Event ID: 3080
   Event Type: Warning
   Event Source: MSExchangeMTA
   Event Category: Internal Processing
   Description:
   A fatal MTA database server error was encountered. [XAPI OPERATOR 41 26] (16)

   Event ID: 2171
   Event Type: Warning
   Event Source: MSExchangeMTA
   Event Category: Internal Processing
   Description:
   An MTA database server error was encountered while reading an attribute.
   Called from MTA. Procedure: 423. Database error code: ODXOINIU - Object does
   not exist. Object at fault: [DB######.DAT]. Attribute identifier: 86. Value
   number: 1. Referenced object: 00000000 (00000000 => N/A). Referenced
   object error 0. [DB Server DISP:ROUTER 23 26] (14)

   Event ID:2155
   Event Type: Warning
   Event Source: MSExchangeMTA
   Event Category: Internal Processing
   Description:
   An MTA database server error was encountered. Failed to read attribute
   information (AAT) for object 01000068. Database server error code: 2127. [DB
   Server OPERATOR 22 29] (14)

   Event ID:2127
   Event Type: Warning
   Event Source: MSExchangeMTA
   Event Category: Operating System
   Description:
   An MTA database server error was encountered. Error accessing object attribute
   (AAT) on a Read/Write operation. Filename:
   e:\exchsrvr\mtadata\.\DB000068.DAT. File operation: 0. Operating system
   error: 2127. Referenced object: OPEN (00000000 => N/A). Referenced object
   error 00000000. [0 DB Server OPERATOR 22] (14)

CAUSE
=====

This issue can occur if one or more .dat files from the \Exchsrvr\MTAData (MTA
Database) directory are missing when you attempt to start the MTA.

RESOLUTION
==========

To resolve this issue, replace the missing .dat files if they have been removed,
and then run the Mtacheck utility.

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

   Q163326 XCON: How and Why to Run Mtacheck


Additional query words:

======================================================================
Keywords          : kberrmsg exc55 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : :5.5
Issue type        : kbprb

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