Article ID: 193687 - View products that this article applies to.
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When the Simple Mail Transfer Protocol (SMTP) service is configured to perform server maintenance based on message expiry and the hard disk on the server becomes full, an Invalid Handle exception error may occur when the SMTP server attempts to create free space on the server's hard disk.
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/152734/EN-US/ )How to Obtain the Latest Windows NT 4.0 Service Pack
Microsoft has confirmed this to be a problem in Microsoft Commercial Internet System version 2.0. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.