We originally considered building of off Unbound. It is great product and plan on switching our internal recursors from PDNS Recursor to Unbound in the future.

We originally considered building of off Unbound. It is great product and plan on switching our internal recursors from PDNS Recursor to Unbound in the future. The decision to build our own was because we are heavy user of Nginx and really like the concept of being able to easily create new modules that can be inserted at different points in DNS response pipeline. We will be blogging a lot more about the technical aspects of RRDNS in the future.