I have a network setup shown in the attached *.txt file below. I want to sync my app web server's DNS (webapp.td domains) to Primary DNS (hosting domains + synced webapp.td domains) and then this one to my secondary DNS server (all domains)... Does anyone know of a good dns setup (maybe zone transfers or something like that). To describe my setup: I have a WEB server wich has it's own DNS server. I want to install another DNS server any sync all domains from WEB server to sec.dns server. But I also have an APP web server which has its own DNS server for 1 domain and it's subdomains. Now i want to sync this one to the WEB server's DNS which is later synced to my Sec. DNS server. Thanx for any answers...