I´m running an Debian (jessie) OS with bind9 as DNS service. Since I started with that system I have some unexpected system issues. From time to time DNS isn´t any longer working (e.g. the users got a timeout) and I need to restart the whole machine, then its working again. I tried to rebuild it (as there isn´t that much config and its DNS service is only used by a handful users).
Any ideas where I can start troubleshooting that issue? I can administrate a Linux OS but I´m not a pro if it comes to the troubleshooting from such issues.
thanks :=)
