Erro: named[673]: lame server resolving 'www.bancoreal.net'

tem com desabilitar essas mensagens? Se sim sabe como faça para desabilitar?

Eh possivel que tenha, mas eu ja nao sei te ajudar ;]

do faq do bind:

What are these "lame server" errors in my logs?
A "lame server" is a server that does not believe is it
authoritative for a domain which has been delegated to
it. The "lame server" messages can be useful if you have
the lame server, or are a domain delegated to the lame
server. If you would rather not see the "lame server"
messages, you can discard them using the logging
statement:

logging {
category lame-servers{ null; };
};