@9peppe Thank you for your replies here, they helped me also. I just wanted to point out that according to this Wildcard certificates and Public Suffix List you can issue a LE certificate for a domain that’s in the private section of the Public Suffix List, just not for one in the ICANN section (.com, .org, etc.). So, unless something has changed since @jsha’s reply in that post, @jacky.jones should be able to get a certificate for apps.mydomain.com.
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