XCON: Mail Flow Stops with MTA Event ID 4287, Error Code 8640

ID: Q236586

The information in this article applies to:

Microsoft Exchange Server, version 5.5

SYMPTOMS

Over particularly loaded slow links and very slow response times, mail flow over an X.400 Connector may appear to be stopped.

The MTA logs the following event in the application log:

Event ID: 4287
Description: Internal error in POP4 with error code 8640.

In Calls.out you can read:


Call-stack for TID 006 (NT:0316) : POP4 DOWN      Busy 0%, stalled on send 
to q/loc 004, normally services q 016

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	5.5.2646.0
Emsmta.exe	5.5.2646.0
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	5.5.2646.0
Mtamsg.dll	5.5.2646.0
P2.xv2	N/A
X400om.dll	5.5.2646.0
X400omv1.dll	5.5.2646.0

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.

Additional query words:

Keywords : exc55 EXC55SP3Fix
Version : winnt:5.5
Platform : winnt
Issue type : kbbug