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The Postfix program
<（お客様のメールアドレス）>: host c2mailmx.mailcentro.com[18.104.22.168] said: 551
5.7.1 REFUSED: Your message has been blocked on server c2mailmx101 by our
SPAM filter pattern (s25928320). Please forward this message along with the
original email to FilterSupport@MailCentro.com. (in reply to end of DATA