Kerio Connect mail sever


Hi we run a mail server with multiple domains and sub domains ie.;, Is it possible to provide a CSR to Lets Encrypt for signing for import into Kerio Connect mail server? The mail server runs on OSX.

Any help appreciated.

Many thanks



Yes, if you like, you can do it like that.

For example, when using Certbot:

certbot certonly -a manual --csr /path/to/csr.pem

or you can submit a CSR to a site like ZeroSSL which will also guide you through the certificate issuance process.

Keep in mind that the idea to use Let’s Encrypt is to take advantage of automation - the validation and installation of certificates should be totally automatic, which is achieved by using one of the available ACME clients suited to your environment.


Thanks AZ, i dont believe there is a way to automate the process with in Kerio Mail server as its required to import the generated certificate unless you guys know of a way? :))

Many thanks


Automation is merely preprogramming the steps you would take yourself.
[Given that those steps must be able to be repeated “blindly” and still succeed]

If you find that set of “steps”, you can automate them.
Even Kerio must have a known set of steps to update the certificate…
You might not find that answer here; But once you do find it, you should be able to include them in the automation process.

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