I have been using BIND9. I have also seen a number of folks try other things, but I have found when testing those software that DNSSEC/EDNS0 and properly handling DNS query/response on TCP are not well supported.
On Feb 22, 2010, at 8:16 AM, Claudio Lapidus wrote: > Hello all, > > We are a mid-sized carrier (1.2M broadband subscribers) and we are looking > for an upgrade in our public DNS resolver infrastructure, so we are > interested in getting to know what are you guys using in your networks. > Mainly what kind/brand of software and which architecture did you use to > deploy it, and how did you do the sizing, all of it would be most helpful > information. > > Many thanks in advance for your advice! > cl.