Exchange 2016 with Let's Encrypt

Hello Support, I am the first time to access this forum, I am currently want to create a test environment with Exchange 2016, may I know if the certificates from Let’s Encrypt is available.suitable for Exchange 2016? And how can I got multiple domains from one certificate? like,, etc?

Please suggest, any help would be appreciated!

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Yes, as long as you are looking for a TLS certificate, not S/MIME.

You’ll need to pick a ACME client first, install it on that machine and use that client to issue certificates that contain multiple SANs. You can also issue a wildcard certificate (that will cover * if needed.

You can read Getting started to learn more about this:
Then you can pick a client from or anywhere else.


thank you very much!!

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