Hello,
is anyone using Ubound for ISP, and can share config file ? Im new for DNS and I would like to check config to get better understanding.
Thank you very much
hi there
I think that the alternative for an authoritative DNS will be NSD
instead of unbound.
In my case I have ISPCONFIG for our first DNS (ispconfig+bind), and then
rsync every few minutes to my second DNS (the NSD one) and "slightly"
transform the configuration from bind to nsd.
if you need more details you may write me directly. It is somehow easy.
regards
EPE
Hi. There isd a lot of ISP in Brazil using Unbound as DNS.
Some of then with 100 clients, a lot with 1000 and go on.
Using to accept recursive cached requests with ACL.
We had a SO with an Unbound Web UI, called BrbOS.
It’s a FresBSD 64, running our mod kernel.
The config is the secret. 
It will mainly be based on how many clients, aka requests
and how much hardware do you have
memory to cache, HD to save and reload cache if needed
CPU/processors, to run threads
1 thread per core, power of 2 slabs
then you need to consider using root servers or forwards.
Forwards and good, but sometimes they cause problems.
Root servers are good, sometimes you got stuck in a BGP or some cached server
Sometimes work fine for like a year without needed to clear cache
Maybe this gives you some info about config.
[https://prnt.sc/u6j1yr](https://prnt.sc/u6j1yr](https://prnt.sc/u6j1yr))