"Let's Encrypt" is an organisation that provides SSL certificates for free in an automated way. While the use is simple on IIS or Apache web servers, on Kerio Connect it is a bit more complicated as it comes with its own web server. Here is how I set it up (there might be other ways, of course, please feel free to add your comments at the bottom of the page). First, download "letsencrypt-win-simple" from https://github.com/Lone-Coder/letsencrypt-win-simple This tool simplifies and automates Read more [...]

Find below a list of messages that can appear in the security log of Kerio Connect 8.0 and what they mean: SMTP Spam attack detected from 85.51.174.157, client closed connection before SMTP greeting This message only appears if Spam Repellent is switched on. It means that the client (sending mail server) hasn't waited the 25 seconds (or whatever is configured in Spam Repellent) for the SMTP greeting. It closed the connection too early. This is indicative of bot net Spam as normal mail servers would Read more [...]

Starting 28-July-2012, I see the following entries in the KC warning log once a day: [28/Jul/2012 xx:xx:xx] License update failed: Automatic license update failed during attempt to contact registration server: (11) Unexpected server response [29/Jul/2012 xx:xx:xx] License update failed: Automatic license update failed during attempt to contact registration server: (11) Client-Server communication error.: couldn't connect to host [30/Jul/2012 xx:xx:xx] License update failed: Automatic license update Read more [...]