How to implement SSL for multiple levels of subdomains in Caddy? e.g. a.b.c.mysite.com

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For example, I have a domain named mysite.com, and I want to configure these subdomains:

  • a.b.mysite.com ( success, not so easy)
  • a.b.c.mysite.com ( failed )

How to do this in Caddy?

Currently I managed to setup wild card ssl certificate for a.mysite.com and a.b.mysite.com by this kind of config:

*.test-ddns.com *.eth.test-ddns.com {
  reverse_proxy 127.0.0.1:4567

  log {
    output file /var/log/access-wildcard-test-ddns.log
  }

  tls {
    dns cloudflare <dns-edit-pub-key>
  }
}

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