What is required for sending domain validation?

The requirement for sending domain validation is proof of ownership. This is crucial because it establishes that the requester has control over the domain in question. Without proving ownership, there is no way to verify that the individual or organization requesting domain validation has legitimate authority to use the domain.

This process typically involves providing a method of verification, such as responding to an email sent to an address associated with the domain or adding specific records to the domain's DNS settings. This ensures that only authorized users can send communications or engage in activities related to that domain, which is essential for maintaining security and trust in online communications.

Other factors like documented history, general popularity, or high website traffic do not provide the necessary evidence of ownership and therefore do not fulfill the requirements for domain validation. The focus is solely on ensuring that the person or organization requesting validation has rightful ownership and access to the domain in question.