Olá galera, td blz?

Tem como a gente alterar aquelas mensagens que o postifix retorna, quando uma mensagem não pode ser entregue tipo:
This is the Postfix program at host maquina.dominio.com.br.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The Postfix program
Ou pelo menos definir em pt_BR

Vlw,
Leanro