Microsoft Knowledge Base Article 321045 contains the following summary:
DNSLint is a Microsoft Windows utility that helps you to
diagnose common DNS name
The following file is available for download from the Microsoft Download Center:
Download the Dnslint.exe package now.
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to Obtain Microsoft Support Files from Online Services
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