Delayed Mail (still being retried)

[postmaster-noreply at playnet.it]

This is the mail system at host smtpsrv.playnet.it.

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# THIS IS A WARNING ONLY.  YOU DO NOT NEED TO RESEND YOUR MESSAGE. #
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Your message could not be delivered for more than 4 hour(s).
It will be retried until it is 6h hour(s) old.

For further assistance, please contact Playnet Helpdesk Support.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<comerio at legalmail.it>: host sendm.cert.legalmail.it[80.82.9.223] said: 450
    4.2.2 <comerio at legalmail.it>... temporary failure; please retry later /
    Errore temporaneo, per favore riprovare piu' tardi (in reply to RCPT TO
    command)
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