XCON: MTA Fails to Recover Associations Following Network Problems
ID: Q232602
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The information in this article applies to:
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Microsoft Exchange Server, version 5.5
SYMPTOMS
The Microsoft Exchange Server Message Transfer Agent (MTA) may stop processing messages following disruption of network service and generates events similar to the following:
Event ID: 4284
Category: X.400 Service
Source: MSExchangeMTA
Description: An error has occurred during connection/disconnection. Error code=8511 [POP4 POP4 DOWN 4 179] (14)
Event ID: 4287
Category: X.400 Service
Source: MSExchangeMTA
Description: An internal MTA error occurred. Contact Microsoft Product Support Services. Error code=8640 [POP4 POP4 DOWN4 18] (14)
Event ID: 2035
Category: X.400 Service
Description: Lost connections to locality 0 (BASE POP4 DOWN(6)
Event ID: 1209
Category: X.400 Service
Description: Session error, invalid source LPI on received message. Invalid LPI is 1-16-64 (PLATFORM KERNEL(19) Proc 62)
After network connectivity is restored, the MTA may fail to resume message processing until the MTA service is restarted.
CAUSE
If your Exchange Server computer encounters a network disconnection or disruption while there are messages queued in the MTA for delivery, the MTA may fail to properly recover active associations.
The time interval "n," in seconds, between the logged errors is equal to the number of seconds set in the X.400 Connector. To check this setting, open the property pages of the X.400 Connector, select the Override tab, in the Connection Retry Values frame, and read the Open Interval (sec) setting.
As mail is queued to go across the WAN link, the X.400 Connector attempts to re-establish the connection every n seconds. Because the WAN connection is down, the MTA transport is not available; the MTA is logging these two events.
These errors may also be caused by intermittent network problems such as a WAN connection being temporarily down. This does not necessarily indicate a problem with Exchange Server or the MTA.
RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, please see the following article in the
Microsoft Knowledge Base:
Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack
The English version of this fix should have the following file attributes or later:
Component: Message Transfer Agent (MTA)
| File name |
Version |
|---|
| Dbserver.sch |
N/A |
| Dcprods.cat |
N/A |
| Ems_rid.dll |
5.5.2614.0 |
| Emsmta.exe |
5.5.2614.0 |
| Info4log.cfg |
N/A |
| Infoblog.cfg |
N/A |
| Infodlog.cfg |
N/A |
| Infollog.cfg |
N/A |
| Infoplog.cfg |
N/A |
| Infotlog.cfg |
N/A |
| Mtacheck.exe |
5.5.2614.0 |
| Mtamsg.dll |
5.5.2614.0 |
| P2.xv2 |
N/A |
| X400om.dll |
5.5.2614.0 |
| X400omv1.dll |
5.5.2614.0 |
STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.
MORE INFORMATION
After the fix is applied, association recovery should occur as expected and messages should flow after the network is restored.
For additional information, please see the following article in the Microsoft Knowledge Base:
Q175354 XCON: Repeated Event IDs, 4284, and 4287, Indicate Network Problem
Additional query words:
Keywords : exc55 EXC55SP3Fix
Version : winnt:5.5
Platform : winnt
Issue type : kbbug