Information on SSL File Authentication. File Authentication is available as an option instead of email validation for various certificates.
Information on how to validate your SSL certificate order using DNS authentication.
Email Authentication is available as an option to verify ownership of your domain.
How to complete DNS authentication with Comodo orders. It is possible to add a DNS CNAME record to your domain in order to validate ownership when placing orders for Comodo products.
Once you have completed your order you can access the relevant intermediate CA from the order management page. This will ensure you get the appropriate intermediate certificate.
Information on why an enrolment for SSL has been flagged for manual review.
Domain Control Validation email information for Symantec, Geotrust, Thawte and RapidSSL.
Due to the General Data Protection Regulations (GDPR) the whois email address is no longer listed for domain validation.
Video tutorial of the domain validated certificate order process.