DNS Expert - Version 1.5 A comprehensive and flexible DNS diagnostic tool that maximizes the reliability of DNS server operation, while reducing administrators' effort on DNS setup and maintenance. It provides complete, systematic analysis of DNS records for any number of domains, isolates errors and offers solutions to the most complex problems. DNS Expert analyzes DNS records on all DNS servers for Unix, NT, Mac OS or any other operating system. Powerful, timesaving, cost-effective and easy to use, it is the one tool that no ISP or corporate DNS administrator can afford to be without.