Hello, last weekend my primary DNS-Server goes down, and some of my server can't find each other. I have a Primary and a Secondary DNS-Server using bind9. The resolv.conf file looks like: nameserver <MyPrimaryDNS> nameserver <OneOfMyISP> nameserver <2'ndOfISP> For understanding: Is the secondary DNS just a backup of the Master for "loadBalancing"? What does the secondary DNS do if master is down? How can I fix this?