XCON: MTA Terminates After Receiving Mail from Zoomit Gateway

The information in this article applies to:

• Microsoft Exchange Server, versions 4.0 and 5.0

SYMPTOMS

The Microsoft Exchange message transfer agent (MTA) may terminate unexpectedly after receiving a message over an X.400 connector from a Zoomit gateway. The following sequence of events may be logged in the application event log:

   Event ID:200
   Source:MSExchangeMTA
   Type:Warning
   Category:X.400 Service
   Description:
   An error occurred while ASN.1 was decoding an object (dump reference
   674).
   [child length exceeds given maximum 85 2921 1msev 674 MTA XFER-IN 21 98]
   (14)

   Event ID:2050
   Source:MSExchangeMTA
   Type:Error
   Category:Internal Processing
   Description:
   A fatal internal MTA error occurred. Contact Microsoft Product Support
   Services.
   An illegal PUT to element 1C87FF00 occurred at offset 31081. [BASE XFER-
   IN 21 9] (16)

   Event ID:9405
   Source:MSExchangeMTA
   Type:Error
   Category:Field Engineering
   Description:
   An unexpected error has occurred which may cause the MTA to terminate.
   Error: Error writing AAT: obj 87. [BASE XFER-IN 21] (16)

   Event ID:9405
   Source:MSExchangeMTA
   Type:Error
   Category:Field Engineering
   Description:
   An unexpected error has occurred which may cause the MTA to terminate.
   Error: Error writing AAT: obj 87. [BASE XFER-IN 21] (16)

CAUSE

The Zoomit gateway may have sent a message with an improperly encoded content length. Improperly encoded messages may cause the MTA to terminate unexpectedly.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. Supported fixes for both versions are now available, but have not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support Services for more information.

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0. This problem was corrected in the latest Microsoft Exchange 5.0 Server U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

   S E R V P A C K

MORE INFORMATION

Zoomit gateways are manufactured by Zoomit Corporation, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Keywords          : kbbug4.00 kbbug5.00 kbfix5.00.sp1 XCON kbusage buglist
Version           : 4.0 5.0
Platform          : WINDOWS
Issue type        : kbbug