You can test your site using the SSL Server Test. The test results contain a section named “Handshake Simulation” which should show you browser/OS combinations that work / do not work.
With the latest Docker image I’m seeing the following TLS configuration:
You can send your users to https://www.ssllabs.com/ssltest/viewMyClient.html in order to get more information about their browser and OS versions as well as supported TLS versions.