DNS Authentication for Comodo Orders

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It is possible to add a DNS CNAME record to your domain in order to validate ownership when placing orders for Comodo products.

What DNS record type do I need to create?

The DNS record required is a CNAME record. If you want to use this validation method make sure you are able to edit your DNS records.

What is the required DNS CNAME record?

This is generated as part of your order. The order management page will show you the record you need to create.


Comodo DNs Authentication

I have added the DNS CNAME record now what?

The system will automatically check for your DNS entry at regular intervals. You can also use the “Poll Authentication” link within your order management page. Due to how DNS works however it is possible it may take a few hours after adding the record to your DNS server before it is detected.

Why is my DNS record not being detected?

Due to DNS caching it can take a few hours for the record to propagate and be publicly available to the authentication servers. If you need your certificate quickly we recommend File Authentication or Email Authentication.

I have already started my order can I switch to DNS Auth?

No. It is not possible to switch to DNS Auth from any other method. You must instead cancel your order and start a new one. It is only possible to switch from File or DNS Auth to Email Auth.

I have already started my order can I switch to DNS Auth?

Contact us and we can do this for you.

I am unable to add the required DNS string what can I do?

You can switch to Email Authentication via your order management link.

Can I switch to File Auth from DNS Auth?

Contact us and we can do this for you.


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