Im trying to set up this domain: nataliatesta.com.ar, but, even when its already pointed and delegated, I can not access it (I get "server not found").
Maybe we have too much domains for our current four DNS?
You have nameservers properly setup I take it, any others with com.ar domains? If you do that should not be an issue, sometimes the country nameservers can be a bit picky about naming of hte nameservers, but as long as you follow standards like ns. or dns. (with number appended) they typically work.