- Release Notes
- Announcements
- Price Change to DigiCert SSL Certificates
- TrustAsia Root Certificate Update
- Domain Validation Policy Update
- SSL Certificate Service Console
- Multi-Year SSL Certificate and Automatic Review
- Notice on Stopping the Issuance of 2-Year SSL Certificates by CAs Starting from September 1, 2020
- Announcement on Stop Using the Symantec SSL Certificate Name After 30 April 2020
- Notice on Certificate Revocation Due to Private Key Compromises
- Notice on Application Limits for DV SSL Certificates
- Notice on Adjustment of Free SSL Certificates Policy
- Let's Encrypt Root Certificate Expired on September 30, 2021
- Product Introduction
- Purchase Guide
- Getting Started
- Certificate Application
- Domain Ownership Validation
- Operation Guide
- Certificate Installation
- Installing an SSL Certificate on a Tencent Cloud Service
- Installation of International Standard Certificates
- Installing an SSL Certificate on an Nginx Server
- Installing an SSL Certificate on an Apache Server (Linux)
- Installing an SSL Certificate on an Apache Server (Windows)
- Installing an SSL Certificate (JKS Format) on a Tomcat Server (Linux)
- Installing an SSL Certificate (JKS Format) on a Tomcat Server
- Installing an SSL Certificate (PFX Format) on a Tomcat Server
- Installing an SSL Certificate on a GlassFish Server
- Installing an SSL Certificate on a JBoss Server
- Installing an SSL Certificate on a Jetty Server
- Installing an SSL Certificate on an IIS Server
- Installing a Certificate on WebLogic Servers
- Selecting an Installation Type for an SSL Certificate
- Certificate Management
- Instructions on SSL Certificate Auto-Renewal
- Certificate Hosting
- Uploading (Hosting) an SSL Certificate
- Reminding Reviewers to Review an SSL Certificate Application
- Revoking an SSL Certificate
- Deleting an SSL Certificate
- Reissuing an SSL Certificate
- Ignoring SSL Certificate Notifications
- Customizing SSL Certificate Expiration Notifications
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Certificate APIs
- CancelAuditCertificate
- ApplyCertificate
- CreateCertificate
- DescribeHostUpdateRecord
- DescribeHostUpdateRecordDetail
- ModifyCertificateResubmit
- UpdateCertificateInstance
- UpdateCertificateRecordRetry
- UpdateCertificateRecordRollback
- CreateCertificateBindResourceSyncTask
- DescribeCertificateBindResourceTaskDetail
- DescribeCertificateBindResourceTaskResult
- UploadConfirmLetter
- DescribeHostTeoInstanceList
- UploadCertificate
- SubmitCertificateInformation
- ReplaceCertificate
- ModifyCertificateProject
- ModifyCertificateAlias
- DownloadCertificate
- DescribeCertificates
- DescribeCertificateOperateLogs
- DescribeCertificateDetail
- DescribeCertificate
- DeleteCertificate
- CommitCertificateInformation
- CancelCertificateOrder
- CSR APIs
- Data Types
- Error Codes
- Practical Tutorial
- Automatic Solution for Implementing and Issuing Multi-Year Certificates and Binding Resources
- Apple ATS Server Configuration
- Quickly Applying for a Free SSL Certificate via DNSPod
- Enabling Tencent Cloud DDNS and Installing Free Certificates for Synology NAS
- Batch Applying for and Downloading Free Certificates Using Python-based API Calls
- Profile Management
- Troubleshooting
- Domain Validation Failed
- Domain Security Review Failed
- Website Inaccessible After an SSL Certificate is Deployed
- 404 Error After the SSL Certificate is Deployed on IIS
- “Your Connection is Not Secure” is Displayed After the SSL Certificate is Installed
- Message Indicating Parsing Failure Is Displayed When a Certificate Is Uploaded
- Automatic DNS Validation Failed for a Domain Hosted with www.west.cn
- Host Name Field Cannot Be Edited in IIS Manager When Type Is Set to https
- Message Indicating Intermediate Certificates Missing in Chain Is Displayed When a Free SSL Certificate Is Deployed on IIS
- FAQs
- SSL Certificate Selection
- SSL Certificate Application
- Quota of Free SSL Certificates
- How to Fill In the Domains Bound to an SSL Certificate During the Application?
- Wildcard SSL Certificates
- Why Does the Order Status Not Changed After a Notification Email Is Received from a CA?
- Can the TXT Records for Domain Name Resolution Configured in the Certificate Be Deleted?
- What Is CSR?
- How Do I Make a CSR File?
- What Is Private Key Password?
- Forgot Your Private Key Password?
- Can an SSL Certificate Be Revoked?
- What are the differences between RSA and ECC?
- What Should I Do If the Console Prompts That "The Certificate Is Bound to Tencent Cloud Resources and Cannot Be Revoked" When I Submit an SSL Certificate Revocation Application?
- What’s the Difference Between Certificate Reissue and Reapplication?
- Which SSL Certificate Types Are Supported for Mini Programs?
- SSL Certificate Management
- SSL Certificate Installation
- What Should I Do If the Host Name Field Is Uneditable in the IIS Manager?
- How Do I Enable Port 443 for a Server?
- Why Does the Website Prompt “Connection Is Untrusted"?
- How Do I Install OpenSSL?
- How Can I Set TLS Versions for SSL Certificates?
- How Can I Combine an SSL Certificate Chain?
- Can Tencent Cloud SSL Certificates Be Used for WebSocket?
- How Do I Enable the IIS Service?
- What Should I Do If I Am Prompted That HTTPS Is Not Secure After Reapplying for Deployment upon Expiration of the SSL Certificate?
- SSL Certificate Region
- SSL Certificate Review
- SSL Certificate Taking Effect
- Is the Original SSL Certificate Still Valid After the Server IP Address Is Changed?
- How Do I Check in a Browser Whether an SSL Certificate Has Taken Effect?
- What Should I Do If GlobalSign Certificates Are Not Supported in Windows 7?
- What Should I Do If the Issue of a Free SSL Certificate Takes Too Long or Failed?
- SSL Certificate Billing and Purchase
- SSL Certificate Validity Period
- Related Agreement
- Contact Us
- Glossary
- Release Notes
- Announcements
- Price Change to DigiCert SSL Certificates
- TrustAsia Root Certificate Update
- Domain Validation Policy Update
- SSL Certificate Service Console
- Multi-Year SSL Certificate and Automatic Review
- Notice on Stopping the Issuance of 2-Year SSL Certificates by CAs Starting from September 1, 2020
- Announcement on Stop Using the Symantec SSL Certificate Name After 30 April 2020
- Notice on Certificate Revocation Due to Private Key Compromises
- Notice on Application Limits for DV SSL Certificates
- Notice on Adjustment of Free SSL Certificates Policy
- Let's Encrypt Root Certificate Expired on September 30, 2021
- Product Introduction
- Purchase Guide
- Getting Started
- Certificate Application
- Domain Ownership Validation
- Operation Guide
- Certificate Installation
- Installing an SSL Certificate on a Tencent Cloud Service
- Installation of International Standard Certificates
- Installing an SSL Certificate on an Nginx Server
- Installing an SSL Certificate on an Apache Server (Linux)
- Installing an SSL Certificate on an Apache Server (Windows)
- Installing an SSL Certificate (JKS Format) on a Tomcat Server (Linux)
- Installing an SSL Certificate (JKS Format) on a Tomcat Server
- Installing an SSL Certificate (PFX Format) on a Tomcat Server
- Installing an SSL Certificate on a GlassFish Server
- Installing an SSL Certificate on a JBoss Server
- Installing an SSL Certificate on a Jetty Server
- Installing an SSL Certificate on an IIS Server
- Installing a Certificate on WebLogic Servers
- Selecting an Installation Type for an SSL Certificate
- Certificate Management
- Instructions on SSL Certificate Auto-Renewal
- Certificate Hosting
- Uploading (Hosting) an SSL Certificate
- Reminding Reviewers to Review an SSL Certificate Application
- Revoking an SSL Certificate
- Deleting an SSL Certificate
- Reissuing an SSL Certificate
- Ignoring SSL Certificate Notifications
- Customizing SSL Certificate Expiration Notifications
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Certificate APIs
- CancelAuditCertificate
- ApplyCertificate
- CreateCertificate
- DescribeHostUpdateRecord
- DescribeHostUpdateRecordDetail
- ModifyCertificateResubmit
- UpdateCertificateInstance
- UpdateCertificateRecordRetry
- UpdateCertificateRecordRollback
- CreateCertificateBindResourceSyncTask
- DescribeCertificateBindResourceTaskDetail
- DescribeCertificateBindResourceTaskResult
- UploadConfirmLetter
- DescribeHostTeoInstanceList
- UploadCertificate
- SubmitCertificateInformation
- ReplaceCertificate
- ModifyCertificateProject
- ModifyCertificateAlias
- DownloadCertificate
- DescribeCertificates
- DescribeCertificateOperateLogs
- DescribeCertificateDetail
- DescribeCertificate
- DeleteCertificate
- CommitCertificateInformation
- CancelCertificateOrder
- CSR APIs
- Data Types
- Error Codes
- Practical Tutorial
- Automatic Solution for Implementing and Issuing Multi-Year Certificates and Binding Resources
- Apple ATS Server Configuration
- Quickly Applying for a Free SSL Certificate via DNSPod
- Enabling Tencent Cloud DDNS and Installing Free Certificates for Synology NAS
- Batch Applying for and Downloading Free Certificates Using Python-based API Calls
- Profile Management
- Troubleshooting
- Domain Validation Failed
- Domain Security Review Failed
- Website Inaccessible After an SSL Certificate is Deployed
- 404 Error After the SSL Certificate is Deployed on IIS
- “Your Connection is Not Secure” is Displayed After the SSL Certificate is Installed
- Message Indicating Parsing Failure Is Displayed When a Certificate Is Uploaded
- Automatic DNS Validation Failed for a Domain Hosted with www.west.cn
- Host Name Field Cannot Be Edited in IIS Manager When Type Is Set to https
- Message Indicating Intermediate Certificates Missing in Chain Is Displayed When a Free SSL Certificate Is Deployed on IIS
- FAQs
- SSL Certificate Selection
- SSL Certificate Application
- Quota of Free SSL Certificates
- How to Fill In the Domains Bound to an SSL Certificate During the Application?
- Wildcard SSL Certificates
- Why Does the Order Status Not Changed After a Notification Email Is Received from a CA?
- Can the TXT Records for Domain Name Resolution Configured in the Certificate Be Deleted?
- What Is CSR?
- How Do I Make a CSR File?
- What Is Private Key Password?
- Forgot Your Private Key Password?
- Can an SSL Certificate Be Revoked?
- What are the differences between RSA and ECC?
- What Should I Do If the Console Prompts That "The Certificate Is Bound to Tencent Cloud Resources and Cannot Be Revoked" When I Submit an SSL Certificate Revocation Application?
- What’s the Difference Between Certificate Reissue and Reapplication?
- Which SSL Certificate Types Are Supported for Mini Programs?
- SSL Certificate Management
- SSL Certificate Installation
- What Should I Do If the Host Name Field Is Uneditable in the IIS Manager?
- How Do I Enable Port 443 for a Server?
- Why Does the Website Prompt “Connection Is Untrusted"?
- How Do I Install OpenSSL?
- How Can I Set TLS Versions for SSL Certificates?
- How Can I Combine an SSL Certificate Chain?
- Can Tencent Cloud SSL Certificates Be Used for WebSocket?
- How Do I Enable the IIS Service?
- What Should I Do If I Am Prompted That HTTPS Is Not Secure After Reapplying for Deployment upon Expiration of the SSL Certificate?
- SSL Certificate Region
- SSL Certificate Review
- SSL Certificate Taking Effect
- Is the Original SSL Certificate Still Valid After the Server IP Address Is Changed?
- How Do I Check in a Browser Whether an SSL Certificate Has Taken Effect?
- What Should I Do If GlobalSign Certificates Are Not Supported in Windows 7?
- What Should I Do If the Issue of a Free SSL Certificate Takes Too Long or Failed?
- SSL Certificate Billing and Purchase
- SSL Certificate Validity Period
- Related Agreement
- Contact Us
- Glossary
What is CAA?
Certification Authority Authorization (CAA) is designed to avoid SSL certificates from being issued wrongly, which was approved by the Internet Engineering Task Force (IETF) as RFC 6844. In March 2017, the CA/Browser Forum passed Ballot 187, which requires mandatory CAA checking from September 8, 2017.
How Does CAA Work?
The domain name holder can set the CAA record to authorize a specific CA to issue an SSL certificate for it. The CA will mandatorily check the domain name’s CAA record under the regulations. If it’s not authorized, CA will reject issuing an SSL certificate for it to avoid certificate misissuance and security risks.
Note:
If a CAA record is not configured for the domain, any CA can issue an SSL certificate for this domain.
If your domain is hosted with DNSPod, see CAA Record.
If a CAA record for a non-Tencent Cloud CA is configured for the domain name, an SSL certificate cannot be issued for the domain properly. Before domain validation, check whether a CAA record is added for the domain and remove it if there is any.
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