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Symptom:

After installing one of the DNS Expert products, my DNS server reports zone transfer attempts. Should I be concerned? 

Problem:

Zone transfers are reported by some DNS Servers as a security issue. 

Solution

In order to fully analyze your zone data, every DNS Expert product attempts to obtain zone transfers from your authoritative servers. While this may show up in your server’s log as a security warning, it’s perfectly normal. In order to fully analyze your zones, you must configure all of your authoritative name servers to allow zone transfers to the machine running your DNS Expert product.