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postmaster.eng.osaka-u.ac.jp
eng.osaka-u.ac.jp
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www.postmaster.eng.osaka-u.ac.jp
7200
v=spf1 include:
_spf.eng.osaka-u.ac.jp
-all
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www.postmaster.eng.osaka-u.ac.jp
7200
2 hours
v=spf1 include:
_spf.eng.osaka-u.ac.jp
-all