Ok so the last two days named has died on my server? What logs should I be checking to investigate this. Also what are some other common logs I can look into.
By saying named dies, did it crash and you needed to restart it or there was connection timeout and it was back to normal after sometime? In the first case you need to check the /var/log/messages. In the other case it can be an attack to port 53. This needs to be investigated when the issue is happening. +You can use netstat tool with options to see the IPs involved in this.