Symptom
"DNS query failed. Check whether the certificate conforms to the standard" is prompted when a third-party SSL certificate is uploaded in the SSL Certificate Service console. Possible Causes
Cause 1: The format of the uploaded certificate is incorrect.
Cause 2: The uploaded certificate chain is incomplete.
Cause 3: Extra spaces are not deleted before certificate format verification.
Solutions
Check whether the uploaded certificate is in the correct format.
The certificate file starts with "-----BEGIN CERTIFICATE-----" and ends with "-----END CERTIFICATE-----".
The private key starts with "-----BEGIN (RSA) PRIVATE KEY-----" and ends with "-----END (RSA) PRIVATE KEY-----".
The uploaded certificate chain is incomplete
Check whether the uploaded certificate contains extra spaces.