DNS server isn't responding,' 'DNS lookup failed,' 'NXDOMAIN' and 'DNS resolution timeout' are just some of the possible ways your browser or internet-enabled device tells you there is a DNS failure.

Although this week’s large-scale DDoS attack against Spamhaus may not have been as crippling as early reports suggested, they were noteworthy in that they shined spotlights on a couple of the Internet ...