Sent E-mail blocked

Sent E-mail blocked

I've been blocked for exceeding 10 bounces in a day, while sending new year wishes to my friends more than a week ago.
When I try to send a email, I get this message:

Não foi possível conectar ao servidor SMTP:smtpout.mail.zoho.com Razão: Falha na autenticação:554 5.1.8 Sender Address Blocked

Would you please unblock it?

aline@azpress.com.br