Certum provides three domain verification methods that can be selected during the certificate activation process:

1. Verification of the e-mail address by clicking the verification link, which will be sent by Certum to the domain administrator’s e-mail address (e.g.: admin@yourdomain.eu, administrator@yourdomain.eu, webmaster@yourdomain.eu, postmaster@yourdomain.eu, hostmaster@yourdomain.eu),
2. Verification of the access to the domain by placing on the server a file with the name and content that you will receive from Certum (Note: This method is not available for Wildcard certificates). Find out more here.
3. Verification of the access to the domain by creating an appropriate TXT record in the DNS with the  content that you will receive from Certum.
4. Verification of the access to the domain by creating an appropriate CNAME record in the DNS with the content that you will receive from Certum.
5. Verification of the access to the domain by creating an appropriate TXT record in the DNS for the domain prefixed with “_certum” label, with the content that you will receive from Certum.
6. Verification of the access to the domain by creating an appropriate CNAME record in the DNS for the domain prefixed with “_certum” label, with the content that you will receive from Certum.