What is DNS? How does it work? How to use the ‘NSlookup’ tool
A long time ago in a galaxy far away....well....ok, just a long time ago, I learnt that in order to diagnose the email delivery problems of our customers, understanding the role of DNS would be absolutely fundamental.
Not only that, but I quickly realised the value of the 'NSlookup' DNS tool which is included within Windows.
Independent analyst and security director for EncSec, Graeme Batsman has appeared in, and advised, publications including SC Magazine, The Independent, Microsoft, Metro, Experian and 