mi da questo errore:

This is an informative message sent by Kerio MailServer 5.7.7 at AcerSimone.
The server was not able to deliver your mail message to the following addresses:

<simmete@inwind.it> (mail.libero.it: 553 <simone@acersimone> Invalid mail address, must be fully qualified domain)


ho messo l'id numerico ed è lo stesso...