- What's New
- Function Overview
- Service Overview
- Getting Started
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User Guide
- Topic Management
- Subscription Management
- Message Template Management
- SMN Operation Recording
- Logs
- Permissions Management
- Quotas
- Appendix
- API Reference
- SDK Reference
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FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- How Is SMN Billed?
- What Are the Requirements for an SMN Topic Name?
- How Many Topics Can I Create?
- How Many Subscriptions Can Be Added to a Topic?
- How Many Messages Can Be Published to a Topic?
- How Many Message Templates Can I Create?
- What Are the Limitations on SMS Messages?
- Can I Add Subscriptions Using Multiple Protocols to a Topic?
- Can a Topic Creator Change Subscription Protocols in a Topic?
- Can I Change a Subscription Endpoint for a Topic?
- Can I Delete a Published Message?
- Does SMN Ensure That Messages Are Received by Subscription Endpoints?
- Will a Subscriber Receive the Same Message Multiple Times?
- Why Do Subscribers Fail to Receive Messages After I Publish Messages to a Topic?
- What Can I Do When Pictures in an Email Message Cannot Be Displayed?
- How Do I Obtain My Account ID?
- How Does DingTalk, Lark, or WeCom Chatbot Obtain Subscription Endpoints?
- Videos
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Notes and Constraints
SMN pushes messages asynchronously, which does not ensure the timeliness of message delivery. If your service requires messages need to be delivered in a quasi-real-time manner, exercise caution whether to use SMN.
Quotas specify the maximum number of SMN resources you can create. To view or increase the quota, see Quotas.
The source IP address used by SMN to send messages is not fixed and may be changed at any time. Do not configure a whitelist for source IP addresses, or you may fail to receive SMN messages.
For network security purposes, SMN does not send messages through private networks by default. If you use a Huawei Cloud private IP address to receive SMN messages, contact SMN O&M personnel to configure resolution records for the private IP address and configure firewalls in advance.
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