fail email sent

  • Resolved grapelover

    (@grapelover)


    2 months ago

    I have a very strange issue that users were unable to receive email if they subscribe to a waiting list for a products, i suppose it has nothing to do with the domain reputation as it only happened to a particular plugin “Back In Stock Notifier for WooCommerce”, all other email communications works fine, and Post SMTP Email Logs also indicated successed?

    This is the mail system at host smtp.hosting-cloud.net.

    I’m sorry to have to inform you that your message could not
    be delivered to one or more recipients. It’s attached below.

    For further assistance, please send mail to postmaster.

    If you do so, please include this problem report. You can
    delete your own text from the attached returned message.

    The mail system

    : host relay.jetsmtp.net[103.173.0.0] said: 550 Message
    rejected: 550 [SPAM] Blocked. Seein
    reply to end of DATA command)

Viewing 2 replies - 1 through 2 (of 2 total)
  • Plugin Support M Aqib Khan

    (@aqibkhan9)

    2 months ago

    Hello @grapelover ,

    Thank you for reaching out & sharing the details.

    This issue is plugin-specific and not related to your domain reputation or SMTP configuration, which is why other emails from your site are being delivered successfully.

    The error “550 [SPAM] Blocked” from relay.jetsmtp.net indicates that emails generated by the Back In Stock Notifier for WooCommerce plugin are being rejected by the recipient’s mail server due to the message content, headers, or structure used by that plugin.

    Although Post SMTP shows a “Success” status, this only confirms that the email was successfully handed off to the outgoing mail server. The rejection occurs later at the recipient’s server, which is outside the scope of SMTP-level logging.

    I’d Recommend you take following actions:

    • Review and adjust the email template used by the plugin (subject, body, sender details).
    • Ensure the From and Reply-To addresses match your authenticated domain.
    • Test delivery using an alternative SMTP provider if possible.
    Plugin Support M Aqib Khan

    (@aqibkhan9)

    1 month, 4 weeks ago

    Hello @grapelover ,

    We hope you are doing well.

    We are marking this thread as resolved due to inactivity. If you encounter any further issues, please feel free to open a new thread.

    Have a great day!

Viewing 2 replies - 1 through 2 (of 2 total)

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