[collectd] Troubleshoot starting up collectd service

[Pander]

Hi all,

I have installed collectd on Ubuntu server and would like to run its
service for receiving data from clients.

I have enabled network plugin and uncommented and changed this part:

        <Listen "127.0.0.1" "25826">
                SecurityLevel Encrypt
                AuthFile "/etc/collectd/passwd"
                Interface "eth0"
        </Listen>

and created the passwd file with 'username: password' as contents.

After restarting collectd I don't see a service on port 25826. What
should I do to find the problem?

Thanks,

Pander