Microsoft KB Archive/320225

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XCON: MTA Process Can Leak Memory Because of Excessive Rerouting

Article ID: 320225

Article Last Modified on 10/26/2006



APPLIES TO

  • Microsoft Exchange 2000 Enterprise Server



This article was previously published under Q320225

SYMPTOMS

The private bytes usage for the message transfer agent (MTA) process can reach up to 2 gigabytes (GB) in an environment where minor revision changes are made to the link state tables. This problem usually occurs on bridgehead servers. Usually, the minor version changes occur when there is any of the following situations (this is not a complete list):

  • A change in the connector settings
  • Misconfigured connectors (for example, an incorrect password)
  • Frequent addition and deletion of connectors
  • Unreliable network

After this condition occurs, the MTA generates the following events for any message that enter the MTA.

Event Type: Warning
Event Source: MSExchangeMTA
Event Category: X.400 Service
Event ID: 142
Date: 2/8/2002
Time: 3:08:36 PM
User: N/A
Computer: ServerName
Description:
The MTA was unable to route to recipient C=US;A= ;P=Company;O=Site;DDA:SMTP=user(a)Company.net;. The message (MTS-ID): C=US;A= ;P=Company;L=OrginateServer-020208210308Z-521102, recipient: C=US;A= ;P=Company;O=Site;DDA:SMTP=user(a)Company.net;, recipient number 1. Check the routing table for a possible incorrect routing configuration. (MTA DISP:ROUTER 16 119) (12)

Event Type: Warning
Event Source: MSExchangeMTA
Event Category: X.400 Service
Event ID: 290
Date: 2/8/2002
Time: 3:08:36 PM
User: N/A
Computer: ServerName
Description:
A non-delivery report (reason code unable-to-transfer and diagnostic code unrecognised-OR-name) is being generated for message C=US;A= ;P=Company;L=OrginateServer-020208210308Z-521102. It was originally destined for C=US;A= ;P=Company;O=Site;DDA:SMTP=user(a)Company.net; (recipient number 1), and was to be redirected to . (MTA DISP:RESULT 36 136 (12)

Event Type: Warning
Event Source: MSExchangeMTA
Event Category: X.400 Service
Event ID: 141
Date: 2/8/2002
Time: 3:08:37 PM
User: N/A
Computer: ServerName
Description:
The MTA is unable to route a report for message C=US;A= ;P=Company;L=OrginateServer-020208210308Z-521102 to recipient DN:CN=Alias,CN=Name,OU=Site,O=Company -- C=US;A= ;P=Company;O=Site;S=SurName;G=GivenName;. MTA object at fault: 060009B3. Check the routing table for a possible incorrect routing configuration. (MTA DISP:ROUTER 16 40) (12)


RESOLUTION

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 the Microsoft 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:

Component: MTA

File name Version
Emsmta.exe 6.0.5770.85
X400om.dll 6.0.5770.85
X400omv1.dll 6.0.5770.85


NOTE: Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 2.

STATUS

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.


Additional query words: memory leak mta reset routes

Keywords: kbhotfixserver kbqfe kbbug kbexchange2000presp3fix kbexchange2000sp3fix kbfix KB320225