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

I'm sorry to have to inform you that your message could not
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                   The mail system

<cfkjigj-POR7iDaXXag@public.gmane.org>: host mail.recht.nl[213.206.93.149] said: 550 No such user
    (#5.1.1) (in reply to RCPT TO command)

<claudia-POR7iDaXXag@public.gmane.org>: host mail.recht.nl[213.206.93.149] said: 550 No such user
    (#5.1.1) (in reply to RCPT TO command)

<dcarter-POR7iDaXXag@public.gmane.org>: host mail.recht.nl[213.206.93.149] said: 550 No such user
    (#5.1.1) (in reply to RCPT TO command)

<difiu-POR7iDaXXag@public.gmane.org>: host mail.recht.nl[213.206.93.149] said: 550 delivery denied
    (in reply to RCPT TO command)