This article was previously published under Q313573
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The Exchange 2000 message transfer agent (MTA) may generate an access violation and stop, which requires you to restart the MTA. A message causes the access violation while the MTA is decoding the relayed message. If Application Protocol Data Unit (APDU) logging is enabled, the MTA stops before the message is written to the Bf0.log. You must remove the DBxxxxxx.dat file that contains the message from the Mtadata folder before you can successfully restart the MTA.
This problem can occur because a Siemens Mail.X MTA uses encoding for the Deferred Delivery date attribute that is different from the encoding that the Exchange MTA 2000 expects.
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
The English version of this fix should have the following file attributes or later:
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 3.
This fix was originally made available as a post-Exchange 2000 Service Pack 1 (SP1) fix. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
306241 XCON: The MTA Stops When Receiving a Message with a Deferred Delivery Date