Can I select the e-mail address for the validation myself?

The e-mail address for the validation can’t be chosen at will.

The CAB Forum (Certificate Authority and Browser Forum) has determined that only domain-specific e-mail addresses are permitted for validation in order to occupy access to the domain.

Examples are among others:

• admin@domain.tld
• administrator@domain.tld
• hostmaster@domain.tld
• postmaster@domain.tld
• webmaster@domain.tld

Alternatively, an e-mail address from the WHOIS (NIC) can also be used.

In this way, the certifiers want to ensure that only those individuals /companies receive SSL/TLS certificates that are actually authorized to do so or have received permission to do so from third parties.