On every system I have configured over the years... I always added the Primary and Secondary DNS server of the Internet itself. The addresses I use are: 184.108.40.206 and 220.127.116.11. Since the U.S. Government pays for those to always be available... It makes life easier.
After all... If you place those addresses at the bottom of the DNS server list you will always get a usable answer.
Keep Up with TechRepublic