Microsoft KB Archive/153103

= XCON: MTA Terminates Unexpectedly in Large Nested DL Expansion =

Article ID: 153103

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.0 Standard Edition

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This article was previously published under Q153103



SYMPTOMS
The Microsoft Exchange Message Transfer Agent (MTA) version 5.0 may terminate unexpectedly when performing distribution list (DL) expansion on a large, nested DL. An event similar to the following may be logged in the application event log:

Event ID:9405

Source:MSExchangeMTA

Type:Error

Category:Field Engineering

Description:

An unexpected error has occurred which may cause the MTA to terminate. Error: Access violation (0xc0000005) at Address 0x775e5a50 reading from 0xc. [BASE DISP:FANOUT 15] (16)



MORE INFORMATION
This problem may occur if, for example, there are 26 DLs nested beneath a single DL where the number of members to any one of the nested DLs may range from 0 to 600 or more. When a message is sent to the DL that contains the 26 nested DLs, the MTA may terminate unexpectedly with the 9405 event ID.

The following event may occur and the MTA may stop before logging a 9405 event:

  message NMI2171: Internal Processing Error, severity 14

(DB Server DISP:FANOUT(12) Proc 26) 04-18-97 02:13:47pm Error reading attribute Called from MTA Proc 223 Database error code    ODXOINIU - Object does not exist Object at fault        06000000 Attribute identifier   28 Value number           44 Referenced object      00000000     (00000000 => N/A) Referenced object error 0

The DISP:FANOUT indicates a problem expanding an object, in this case, a large distribution list that contains a number of other distribution lists. The presence of the 06000000 as the Object at Fault is another indication of this particular issue.



STATUS
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

Keywords: kbusage KB153103

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