cosa succede 
These recipients of your message have been processed by the mail server:
xxxxxxyz@rai.it; Failed; 5.1.2 (bad destination system address)
Remote MTA relay11.rai.it: network error
- SMTP protocol diagnostic: 554-relay5.rai.it\r\n554 Your access to this
mail system has been rejected due to the sending MTA's poor
reputation. If you believe that this failure is in error, please contact
the intended recipient via alternate means.
