Send block list
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    Send block list

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    Article Summary

    Available in Classic and VPC

    If you get a hard bounce result when sending an email, then the system registers the recipient's email address to the send block list.

    • The address on the send block list is retained for 7 days (168 hours) by default, and you may change the retention time.
    • If you changes the retention time for blocking, then the change is applied to the addresses registered after the change and the retention time for the existing addresses on the list remains unchanged.
    Note

    The hard bounce is a result code that fails to send an email due to a permanent reason. Even if you attempt to resend it, you may fail to send it. sending an email to an email address that does not exist

    The delivery result codes included in the hard bounce are as follows.

    CodeDescription
    MAILBOX_ERRORDelivery failure due to an error in the recipient's inbox
    MAIL_CONTENTS_ERRORDelivery failure due to a mail content error
    NETWORK_ERRORDelivery failure due to a network error
    RECEIVE_MAIL_SERVICE_ERRORDelivery failure due to a recipient's mail service error
    RECIPIENT_ADDRESS_ERRORDelivery failure due to a recipient address error
    SECURITY_AND_POLICY_ERRORDelivery failure due to security and policy errors
    SMTP_ERRORDelivery failure due to an SMTP error with the recipient

    If you send an email to an address on the send block list, then the delivery is blocked with the result code SEND_BLOCK_ADDRESS.

    Send block list page

    To access the Send block list menu, from the NAVER Cloud Platform console, click the Services > Application Services > Cloud Outbound Mailer > Send block list menus, in that order.
    The send block list page is laid out as follows.

    cloudoutboundmailer-use-sendblock_screen_en

    FieldDescription
    ① Menu nameName of the menu currently being viewed
    ② Basic featuresFeatures displayed upon the initial entry to the Send block list menu
  • [Learn more about the product]: Click to go to the Cloud Outbound Mailer introduction page
  • [Refresh]: Click to refresh the page
  • ③ Search windowSearch by entering the email address. To cancel the search, click the [Reset] button.
  • Display the list at the bottom of the page if the address that you searched exists in the send block history
  • If the address that you searched does not exist in the send block history, display the No data message
  • Set default retention time for delivery blockChange the retention time for blocking delivery from the system. (Refer to Change retention time for blocking delivery)

    View send block list

    The send block list only appears when the send block history is checked by searching the address in the search window.
    The following describes how to check the send block list by searching the address.

    1. From the NAVER Cloud Platform console, click the Services > Application Services > Cloud Outbound Mailer menus, in that order.
    2. Click the Send block list menu.
    3. Enter the email address to search.
      cloudoutboundmailer-use-sendblock_search_en
    4. Check the send block status and history of the address that you searched.
      • If the address that you searched is in the Blocked status, then you may check a history of list addition and the expected time to be deleted.
        cloudoutboundmailer-use-sendblock_search_result_1_en
        • If you click the [View] button of the Delivery result message, then the delivery result message recorded in the system is displayed.
        • If you click the [Remove from send block list] button, then you may immediately cancel the delivery block.
      • If the address that you searched is in the Unblocked status, then you may check a history of list addition and deletion.
        cloudoutboundmailer-use-sendblock_search_result_2_en
        • If you click the [View] button of the Delivery result message, then the delivery result message recorded in the system is displayed.

    Change retention time for delivery block

    The following describes how to change the default retention time for delivery block in the system.

    1. From the NAVER Cloud Platform console, click the Services > Application Services > Cloud Outbound Mailer menus, in that order.
    2. Click the Send block list menu.
    3. Click the [Set default retention time for delivery block] button.
    4. If the setting pop-up window appears, then you can modify the input time.
      • The unit of time may be set by day or time.
      • You may set the time longer than 7 days (168 hours).
    5. Click the [Yes] button.
    6. From the completion pop-up window, click the [OK] button.

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