Array
(
    [0] => <strong>Unable to send to: vmantovan@frigeroviaggi.com: SMTP Error: The following recipients failed: vmantovan@frigeroviaggi.com: 5.1.10 77sBwMDVe4Oeo77sBwzseH frigeroviaggi.com dominio non valido / invalid destination domain
</strong><br />

)