Before a certificate can be issued, the certificate applicant needs to confirm the domain ownership rights. With the implementation of the new Account Panel, you have an opportunity to select one of several methods of domain control validation (DCV) during the certificate activation.
While earlier only email validation was possible, now you have a choice between email, HTTP- and DNS-based validation.
What does each option represent?
A pop-up window will appear and will prompt you to download the needed file.
After you download the file, you need to place it to the root directory of the website. As a result, the file should be accessible on the web via the following URL http://your_domain_name.com/filename.txt .
For domain validation certificates, once the file is uploaded and verified by the system, the certificate gets issued and sent to you via email by the Certificate Authority.
Note! If you are activating a COMODO certificate for a subdomain, you can upload the text into the domain root directory, as well as to the document folder of a subdomain. But if you are activating a COMODO Multi-domain certificate for subdomains, the validation file should be placed into the Document root directory of the corresponding subdomain.
Note! Some of DNS editors add the domain name automatically, so if you paste the whole record to the corresponding box, as a result it may look this way: [hash].domain.com.domain.com.
In this situation it will be necessary to use the digits only without the domain name. If you activate the certificate for a subdomain, you would need to use subdomain only: [hash].sub.
The domain name will be added automatically and the record will be the following:[hash].domain.com. or [hash].sub.domain.com. accordingly.
Certificate Authorities may need up to 1 hour to find and validate the uploaded file or the CNAME record. If after 60 minutes the certificate is not validated, please make sure that the file is publicly accessible and you do not have any firewall blocking the requests, or that the record is visible. If everything looks correct, please contact our support team, so that we can check the issue with the CA for you.
The validation systems at Certificate Authorities side perform the check of the validation file/record automatically with a certain period of time. If the validation failed, you can double-check if the file/record are correct and accessible and edit them if necessary. Once CA validation system runs the next check, it will reach and validate the file or the record.
Changing DCV methods
If you chose a particular DCV method, submitted the order, but suddenly changed your mind about the way of validation, you can change it in your account for COMODO certificates that are awaiting validation. The option can be found at the certificate management page for a needed SSL.
After clicking on Edit Methods, you can choose between the options suggested during the initial activation: Email, HTTP- and DNS-based validation.
Choose the desired method and perform the required steps to complete the DCV.
Note, if you have a COMODO OV or EV certificates, your order will undergo a business validation. After you complete the DCV, expect the email from COMODO with the further instructions.