Hola estimados alg�perto en servidores de correo me podr�br> explicar el porque un email enviado puede rebotar y entregar un
mensaje como este:
*********************
This is the Postfix program at host isis.tecnoera.com.
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
<xxxxx@algo.com>: host ????????[aaa.bbb..ccc.ddd] said: 554 5.7.1
� �<xxxx@kalgo.com>: Relay access denied (in reply to RCPT TO command)