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The mail system
chieko_nakame-thuki@a02.itscom.net (expanded from meguro@deaf.tokyo): host mx01.itscom.net[175.177.155.8] said: 550 5.1.1 chieko_nakame-thuki@a02.itscom.net recipient rejected (in reply to RCPT TO command)
meguro_roukyou77@yahoo.co.jp (expanded from meguro@deaf.tokyo): host mx3.mail.yahoo.co.jp[202.93.78.241] said: 554 delivery error: dd Sorry your message to meguro_roukyou77@yahoo.co.jp cannot be delivered. This account has been disabled or discontinued [#102]. - mta0107.mail.otm.ynwp.yahoo.co.jp (in reply to end of DATA command)