Short Message Service (SMS) allows you to set the daily and monthly alert thresholds and suspension thresholds. If the alert thresholds are reached, the specified contacts receive notification messages from SMS. If the suspension thresholds are reached, SMS stops sending text messages. The security settings help limit the financial loss that may occur due to cyberattacks. The attacks hijack the service and send large numbers of text messages, which causes high costs.

Background information

By default, the maximum number of text messages that you can send per day or month is unlimited. We recommend that you evaluate your business needs before you set a threshold for the number of text messages sent per day or month. If the number of text messages that are sent reaches the suspension thresholds that you specify, SMS stops sending text messages. If you set the threshold to an excessively small value, your business may be affected. If the number of text messages that are sent reaches the alert thresholds that you specify, SMS sends a notification message. We recommend that you immediately check the details after you receive the message.

Precautions

Take note of the following information before you configure the security settings:
  • By default, SMS sends up to 20 notification messages per day.
  • If you want to send more text messages, you must modify the thresholds.

Procedure

  1. Log on to the SMS console.
  2. In the left-side navigation pane, choose System Settings > General Settings.
  3. On the Security Settings tab, click Configure in the Delivery Count Threshold section.
  4. Set the delivery count threshold.
    发送量阈值
    1. Enter the daily and monthly alert thresholds and suspension thresholds. If the alert thresholds are reached, SMS sends notification messages to the specified contacts. If the suspension thresholds are reached, SMS stops sending text messages.

      If you do not need to limit the delivery count, leave the fields blank.

    2. Click Save.
  5. Set the balance alert for resource plans

    If your resource plan balance is lower than the alert threshold, SMS sends a notification message to the specified contacts. The value range of the alert threshold is 0 to 200,000,000.

    套餐包设置
    1. Click Configure and enter the threshold.
    2. Click Save to save your settings.