Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the mail system at host s15348436.onlinehome-server.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 mail system

<_plesk_bounce_mistralsolutions.com@localhost.localdomain> (expanded from
    <arunks@mistralsolutions.com>): This address no longer accepts mail.
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Un allegato non testuale è stato rimosso....
Nome:        non disponibile
Tipo:        text/rfc822-headers
Dimensione:  864 bytes
Descrizione: Undelivered Message Headers
URL:         <http://lists.linux.it/pipermail/tp/attachments/20121119/798dea20/attachment.bin>