Luz Fonseca wrote:
Não foi possível enviar a mensagem porque um dos destinatários foi
rejeitado pelo servidor. O endereço de correio electrónico rejeitado
era '. Assunto 'A enviar
correio electrónico: Oquequeresser', Conta: 'POP3', Servidor: 'smtp',
Protocolo: SMTP, Resposta do servidor: '553 sorry, relaying denied
from your location [84.90.154.171] (#5.7.1)', Porta: 25, Secure(SSL):
Não, Erro de servidor: 553, Número do erro: 0x800CCC79

I don't know if you understand English?

From -
http://www.insideoe.com/problems/errors.htm#relay550
This error message is coming from the mail server, not from OE itself.
It means that the SMTP (outgoing) mail server did not recognize you as
an authorized user and so rejected your message. Most ISPs configure
their SMTP servers to recognize only those whose IP address is on the
accepted list, meaning that you are connected directly to that ISP. If
you use multiple ISPs, you are likely to encounter this problem. The
solution is to change the SMTP server for that mail account under Tools|
Accounts| account name Properties| Servers.

Another possible reason for this error is anti-virus software that
configures OE to use a local proxy for the SMTP server. Since scanning
e-mail is not necessary to protect your computer, you should disable the
e-mail scan in your anti-virus product, and then re-enter the correct
name for your SMTP server.
--
Kath Adams
MS MVP - Windows (Outlook Express)