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RHEL は SPF (Sender Policy Framework) をサポートしていますか?

Solution Verified - Updated -

Issue

  • RHEL は SPF (Sender Policy Framework) をサポートしていますか?
  • postfix および sendmail で SPF (Sender Policy Framework) を使用するにはどうしたら良いですか?
  • MTA からメールを送信すると以下のエラーが表示されます。
'Received-SPF: fail (domain of <domain> does not designate <IP Address> as permitted sender)'.

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5
  • postfix
  • sendmail

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