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CAA Record
Overview
This document describes how to a CAA record. If you want to authorize a designated CA to issue an SSL certificate for your domain name so as to prevent mistaken SSL certificate issuance, you need to add a CAA record.
Directions
Note:
1. Log in to the DNSPod Console.
2. In Authoritative Resolution page, click the domain for which to add a CAA record to enter its "Record Management" page as shown below:
3. Click Add Records and enter the following record information as shown below:
Host Record: enter a subdomain. For example, when adding a record for
www.dnspod.com, you can simply enter "www" in the "Host" field. If you only want to add a record for dnspod.com, select "@" in the "Host" field.Record Type: select "CAA".
Line Type: select "Default"; otherwise, certain CAs may not be able to conduct verification.
Record Value:
The format of a CAA record is [flag] [tag] [value], which consists of a flag byte [flag] and a [tag] -[value] (tag-value) pair called an attribute. You can add multiple CAA fields to the DNS record of the domain.
Field | Subfield | Description |
flag | - | An unsigned integer between 0 and 255, which is used to identify the CA. It is 0 by default, indicating that if the CA issuing the certificate cannot recognize this information, it will be ignored. |
tag | issue | Authorizes a single CA to issue certificates of any type for the host name. |
| issuewild | Authorizes a single CA to issue wildcard certificates for the host name. |
| iodef | The CA can send the URLs of issuance records in violation to a certain email address. |
value | - | CA's domain or email address used for notification of violations. |
Weight: leave it empty.
Priority: leave it empty.
TTL: it is the cache time and 600s by default. The smaller the value, the faster the change to the record will take effect in various regions.
4. Click Confirm.
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