[Postfix-br] Administrative prohibition

[Marcos Jost Silveira]

Boa tarde pessoal, hoje fui enviar uma e-mail e ele voltou com o erro
abaixo, para outras e-mails mando normalmente.

Assunto: Undelivered Mail Returned to Sender

This is the mail system at host mail.meudominio.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 mail system
<conta em dominiodestino.com.br>: host
mail.dominiodestino.com.br[189.xx.xx.xxx] said: 550

    Administrative prohibition (in reply to end of DATA command)