Cannot start HTTP or HTTPS services on Mac OS
Issue encountered
After installing Kerio Connect on Mac OS, the HTTPHypertext Transfer Protocol - A protocol for exchange of hypertext documents in HTML. and HTTPSSecure version of secured by SSL. services may not start because the ports 80 and 443 are already in use by another process.
Solution
Yosemite and El Capitan
Edit the apache configuration file:
/Library/Server/Web/Config/Proxy/apache_serviceproxy.conf
If you look in /Library/Server/Web/Config/Proxy/apache_serviceproxy.conf you'll see apache httpd configured to listen on various ports: 80, 443, 8008, 8800, 8843.
Remove or comment out the following lines:
listen 80
listen 443
listen 8800
listen 8843
You can also change port numbers in Kerio Connect administration to resolve port conflicts if required.
NOTE
We recommend to restart the Kerio Connect server.
Mountain Lion through Mavericks
The following command will properly disable the built-in Apache web service:
sudo launchctl unload -w /System/Library/LaunchDaemons/org.apache.httpd.plist
After the service is properly disabled, the 80 and 443 sockets are then available, and you can successfully start the HTTP and HTTPS services in Kerio Connect.
NOTE
We recommend to restart the Kerio Connect server.