Article ID: 315902 - View products that this article applies to.
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When a Post Office Protocol version 3 (POP3) client connects to the front-end server over a dial-up connection, the client may disconnect after 10 minutes, regardless of the time-out value that is specified on the front-end server. The POP3 client may receive the following error message:
Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: 'user', Server: 'server1', Protocol: POP3, Port: 110, Secure(SSL): No, Socket Error: 10053, Error Number: 0x800CCC0F
This problem can occur in Exchange 2000 Server Service Pack 2 (SP2) if the code does not read the metabase value correctly.
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:
301378The English version of this fix should have the following file attributes or later:
(https://support.microsoft.com/kb/301378/EN-US/ )XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
Component: front end and back end
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NOTE: Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 2.
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.
After you apply this fix, increase the time-out value in accordance with your company needs. This time-out value does not affect a truly inactive client because the back-end server (which has time-out value of 10 minutes) times out a truly inactive client connection.