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How does the validation of a EuropeanSSL Starter certificate work (domain validation)?

Create a Certificate Signing Request (CSR).

The Certificate Signing Request (or "CSR" for short) contains important information such as the hostname to be protected or the key length and is usually created directly on your server together with the PrivateKey. You need the CSR to initiate an order on our website ( and the PrivateKey to install the certificate on your webserver. Never give the PrivateKey to third parties, as this may pose a security risk to visitors to your website. If you do not have the ability to generate the CSR yourself, you can also use the generator on our web site

Important: If you use an IIS, the CSR must be generated on your server. Otherwise, the IIS will not accept the certificate during installation and the certificate will have to be reissued.

Order the certificate and confirm your domain ownership.

You can place your order easily and comfortably on our website ( Enter the previously generated CSR and select the preferred duration and validation method. We offer 3 methods to validate a domain-validated certificate:

  • Validation by e-mail:

An e-mail will be sent to one of the following prefixes, which contains a link to confirm the validation. The following prefixes can be used:

  • Validation via DNS:

With this method, a specific CNAME entry must be created in the DNS settings of the domain, which will then be used to validate your domain. You will receive this information from us by e-mail.

  • Validation by file:

For this method, a file must be placed on your web space and be accessible in the browser. You will receive the path and the file from us by e-mail following your order.

Validation of the certificate

After your order, you will receive an order confirmation and an e-mail with instructions on how to confirm your domain ownership. By validating the domain for which you wish to purchase the certificate, you confirm to us that you actually own the domain. For this reason, only the methods described above can be used.

Issue of the certificate

After confirmation of ownership, the certificate will be issued and sent to the e-mail address stored in your account. The message contains a zip file containing the actual certificate (.crt) as well as all required root and intermediates (.ca).

If you have any questions or problems during the ordering process, please do not hesitate to contact our support (

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