Troubleshooting BIND

We recently had an issue on a customer’s system where DNS wasn’t responding. In this case, the problem ended up being in “the last place I looked for it”, I thought I’d scribble down my thought process when troubleshooting BIND. This process looks similar for most network services, but I’ll be using BIND for this example. In this case, the user gave us literally no information to go on, other than “BIND isn’t working, there must be a bug in Webmin.