[Mkb] Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the mail system at host tuoni.ita.chalmers.se.

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

<Morteza_hazara at yahoo.com>: host mta5.am0.yahoodns.net[98.136.96.74] said: 554
    delivery error: dd This user doesn't have a yahoo.com account
    (morteza_hazara at yahoo.com) [-9] - mta4140.mail.ne1.yahoo.com (in reply to
    end of DATA command)
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