Hi,
when i create a subdomain for my domain “example.com” for validation like
_acme-challenge IN NS my.external.dns.com
Is it then possible to create create certficates for any hosts in example.com ?
As implemented by Let’s Encrypt, _acme-challenge.example.com may be used to validate the name example.com and the wildcard *.example.com.
To validate foo.example.com or *.foo.example.com, you would use _acme-challenge.foo.example.com.
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Thanks, i wasn’t sure and testing with our DNS hoster would have taken me several days 
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