GFI official position is to use purchased certificates for use with Kerio Connect and not use free Let’s Encrypt certificates, however for those wanting free Let’s Encrypt option it is possible.
90 votesBernd Poks commented
Zarafa wants to expand the "WebApp" his "Communication & Sharing Platform" to WebRTC capabilities (Web Real-Time Communication). The user can use this protocol to communicate via a web browser via live HD video and audio together and work on content. You will need on their clients no special software or browser plug-ins, at least not for current versions of Firefox or Chrome. Within chat sessions, files - for example, presentations - and transferred screen contents are encrypted and look together.
Translated by GooglBernd Poks commented
There is a quite interesting possibility around to include real-time communication into Kerio.
the free project http://www.webrtc.org offers the opportunity to have a voice chat and real time video conferences.
There is also a free video brigde to widely used XMPP client jabber.
This would be a greate solution to integrate video and voice into Kerio.
We also encourage to base this new feature on a web interface. On client side there is only FireFox or Chrome required - MS is working include functionality into IE.
This protocol is the future standard for RTC
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