Postfix スローエラー "Gmail has detected an unusual rate of unsolicited mail"
Issue
- /var/log/maillog に以下のエラーが表示されます。
Gmail has detected an unusual rate of unsolicited mail. To protect 421-4.7.28 our users from spam, mail has been temporarily rate limited. Please 421-4.7.28 visit 421-4.7.28 https://support.google.com/mail/?p=UnsolicitedRateLimitError to 421 4.7.28 review our Bulk Email Senders Guidelines. y8-20020a17090aa40800b0027d74e8a50bsi300418pjp.69 - gsmtp (in reply to end of DATA command))
Environment
- Red Hat Enterprise Linux
- postfix
- 大量のメール送信
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