Additional Information regarding the SSL approver Email address

Allowed prefixes for Approver eMail

Allowed prefixes for the approver e-mail address are:

  • admin@
  • administrator@
  • hostmaster@
  • webmaster@
  • postmaster@

Furthermore, the domain part of the approver e-mail address must be identical with the domain which you want to create a certificate for.

I.e. for a certificate order for the approver e-mail address must be



An alternative validation via the email address in WHOIS is not possible

Under the GDPR many registrars - including Domaindiscount24/Key-Systems - will not publish e-mail addresses in Whois per default.

As a consequence a Certificate Authority (CA) is not able to check if a given approver e-mail address is listed in Whois of the respective domain.

The mentioned standard approver e-mail addresses will always work, regardless of Whois. Thus we always advise to use one of these standard e-mail addresses.



If an appropriate e-mail address does not exist, it must be created.

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