Hello! Actually, I have only one server with 6 IPs. I have already setup a primary DNS on my server using ISPConfig. Now, I need to setup a slave DNS: How to manage this? Apparently, pri and sec DNS should not be on the same server, so do you know of any free and reliable sec DNS service provider? Thanks.
I don't know of such providers, but I've heard of something like this... Anyway, if you decide to get a second server for the secondary DNS, you should have a look here: http://www.howtoforge.com/ispconfig_dns_godaddy