Deploy a S/MIME certificate server

i'd like to deploy a S/MIME certificate server , but the certificate provided need to be recognized on internet or browser, so how to get a delegate certification authorities?
thanks for help

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I move this to Help for better visibility.

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. |, so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is:

I ran this command:

It produced this output:

My web server is (include version):

The operating system my web server runs on is (include version):

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don't know):

I'm using a control panel to manage my site (no, or provide the name and version of the control panel):

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):


LE certs can't be used as authority to issue any type of cert.

You can get an LE cert to help secure the communication to your server.
But it can't be used for anything more than that.


You contract with an existing CA like Digicert, comply with their audit requirements, and pay them big bucks.


i'd like just to provide a free email encryption (private and public keys) for a simple users.but i need to generate a certificate recognised by browsers,

it's possible to find a less expensive , i'll provide a free certificate for public key email.

And so would I.
And so would a lot of others too.
But there is no LE certificate that can be used for that.


is there an alternative like an organism like LE that can help me to provide that?

If you're willing to pay big bucks, sure, probably plenty of CAs. If you're looking for a freebee: almost certainly none exist.




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