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Mail delivery failed: returning message to sender

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2 comments

  • 24x7ss
    As per the error message it seems that mail you are sending is detected as a spam mail because of that you received that bounce back mail. Also, I will suggest you to check your mail server ip in mxtoolbox. Also, you can refer below article which is having enough information why email didn't get deliver or you received bounce back message.
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  • cPanelMichael
    Hello, Yes, it looks like the remote mail server detected your message as SPAM. You may want to try sending another test email to that address to see if it's blocked for all emails from your server, or if it's a content-based rejection. Thank you.
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