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Is there a way to create a free 90days wildcard Ca certificate on ubuntu 18.04 ?
I find my CA certificate is single domain certificate and it doesn’t support mail server.
It looks like I need a wildcard Ca certificate.
I searched on the google and find “https://certbot.eff.org/docs/using.html#dns-plugins”.
Can you tell me how create a 90days wildcard CA certificate using certbot on the ubunutu18.04 ?
Thanks a lot.
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