[postfix-jp:01314] stop the mail from mailer-daemon

[Tomohiro Yamauchi ($B;3Fb(B $BJ~9@(B) <handy@xxxxxxxxx>]

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(B--------------------------------------------------------
(BThis is the Postfix program at host mail.nid.co.jp.
(B
(BI'm sorry to have to inform you that the message returned
(Bbelow could not be delivered to one or more destinations.
(B
(BFor further assistance, please send mail to <postmaster>
(B
(BIf you do so, please include this problem report. You can
(Bdelete your own text from the message returned below.
(B
(B			The Postfix program
(B
(B<handy@xxxxxxxxx>: host localhost.nid.co.jp[127.0.0.1] said: 550 Unacceptable content
(B--------------------------------------------------------
(B
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