<VirtualHost *:443>
        ServerName kerio.example.com:443
        ServerAdmin admin@example.com
        CustomLog "/var/log/apache2/access_log" "%h %l %u %t \"%r\" %>s %b"
        ErrorDocument 404 /error.html
        <IfModule mod_ssl.c>
                SSLEngine On
                SSLCipherSuite "ALL:!aNULL:!ADH:!eNULL:!LOW:!EXP:RC4+RSA:+HIGH:+MEDIUM"
                SSLProtocol -ALL +SSLv3 +TLSv1
                SSLProxyProtocol -ALL +SSLv3 +TLSv1
                SSLCertificateFile "/etc/certificates/kerio.example.com.A62BDDC503EC429F48F6AD7DA83BDE4584D9DF35.cert.pem"
                SSLCertificateKeyFile "/etc/certificates/kerio.example.com.A62BDDC503EC429F48F6AD7DA83BDE4584D9DF35.key.pem"
                SSLCertificateChainFile "/etc/certificates/kerio.eample.com.A62BDDC503EC429F48F6AD7DA83BDE4584D9DF35.chain.pem"
        </IfModule>
        ProxyRequests Off
        <Proxy *>
                Order deny,allow
                Allow from all
        </Proxy>
        ProxyPass / http://kerio.example.com:81/
        ProxyPassReverse / http://kerio.example.com:81/
        <IfModule mod_alias.c>
                Alias "/collaboration" "/usr/share/collaboration"
                Alias "/icons/" "/usr/share/httpd/icons/"
                Alias "/error/" "/usr/share/httpd/error/"
                RedirectMatch temp / "https://kerio.example.com/webmail/login/"
        </IfModule>
        LogLevel warn
        ServerAlias kerio.example.com
</VirtualHost>