I'm trying to create a TXT DNS record with name _acme-challenge.www
on Google Domains to allow me to validate my DNS (i.e. via _acme-challenge.www.example.com
). I've already validated the domain itself; but want to validate the www
subdomain so I can provide this in the certificate's Subject Alternative Name. When attempting this, the page gives error: Failed to save changes to domain settings for example.com
.
Is what I'm attempting valid / if so can anyone suggest what I may be missing?