- What's New
- Function Overview
- Service Overview
- Getting Started
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User Guide
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API Reference
- Before You Start
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FAQs
- What Are the Advantages of SMN?
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- 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?
- Does SMN Always Use the Same Phone Number or Sender Name to Send SMS Messages?
- How Do I Obtain My Account ID?
- How Does a DingTalk, Internal DingTalk, Lark, or WeCom Chatbot Obtain Subscription Endpoints?
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User Guide (ME-Abu Dhabi Region)
- Overview
- Getting Started
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- Logs
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- Quotas
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FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- 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?
- 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?
- Appendix
- Change History
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User Guide (Paris Region)
- Overview
- Getting Started
- Topic Management
- Subscription Management
- Message Template Management
- SMN Operation Recording
- Logs
- Quotas
-
FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- 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?
- Appendix
- Change History
- API Reference (Paris Region)
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User Guide (Kuala Lumpur Region)
- Overview
- Getting Started
- Topic Management
- Subscription Management
- Message Template Management
- SMN Operation Recording
- Logs
- Permissions Management
- Quotas
-
FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- 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?
- 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?
- Appendix
- Change History
- API Reference (Kuala Lumpur Region)
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User Guide (Ankara Region)
- Overview
- Getting Started
- Topic Management
- Subscription Management
- Message Template Management
- Permissions Management
- Quotas
-
FAQs
- What Are the Advantages of SMN?
- What Protocols Does SMN Support?
- 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?
- 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?
- Appendix
- Change History
- API Reference (Ankara Region)
-
User Guide (ME-Abu Dhabi Region)
- General Reference
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Creating SMN Custom Policies
You can create custom policies to supplement the system-defined policies of SMN. For the actions supported by custom policies, see Permissions Policies and Supported Actions in Simple Message Notification API Reference.
You can create custom policies in either of the following ways:
- Visual editor: Select cloud services, actions, resources, and request conditions. This does not require knowledge of policy syntax.
- JSON: Create a JSON policy or edit an existing one.
The following are examples of custom policies created for SMN. For details, see Creating a Custom Policy.
Example SMN Custom Policies
- Example 1: allowing topic creation
{ "Version": "1.1", "Statement": [ { "Effect": "Allow", "Action": [ "smn:topic:create" ] } ] }
- Example 2: denying topic deletion
A policy with only Deny permissions must work with other policies. If the policies assigned to a user contain both Allow and Deny actions, the Deny actions take precedence over the Allow actions.
You can assign a system policy of SMN FullAccess and a custom policy of denying topic deletion to the user group which the user belongs to at the same time. Thus the user can perform all operations on SMN except deleting topics. The following is an example of a deny policy:
{ "Version": "1.1", "Statement": [ { "Effect": "Deny", "Action": [ "smn:topic:delete" ] } ] }
- Example 3: defining multiple actions in a policy
A custom policy can contain multiple actions that belong to any global or project-level services. The following is an example policy containing actions of multiple services:
{ "Version": "1.1", "Statement": [ { "Effect": "Allow", "Action": [ "smn:topic:create", "smn:tag:create", "smn:application:create" ] }, { "Effect": "Allow", "Action": [ "elb:certificates:create", "elb:whitelists:create", "elb:pools:create", "elb:members:create", "elb:healthmonitors:create", "elb:l7policies:create", "elb:listeners:create", "elb:loadbalancers:create" ] } ] }
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