I've tried to configure your DNS code to my domain: http://www.raphaelcagnotto.com.br.
It's registered in http://www.registro.br, but this site don't recognize the DNSs offered by WordPress.
I've heard that the problem is with the extension .br and the solution is to utilize a DNS to Brazil, also offered by you.
Can you help me?
Blog url: http://raphaelcagnotto.wordpress.com/