Where are mldonkey-server config files?

I have installed mldonkey-server with

sudo apt-get install mldonkey-server

It was installed and running. Neither telnet localhost, nor web interface availabe.

$ telnet 127.0.0.1 4000
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
Telnet connection from 127.0.0.1 rejected (see allowed_ips setting)
Connection closed by foreign host.

Now how to check it's config? I can't find where is it. It is said in manual, that mldonkey configs are in the same place where application installed. But I don't control this place while using apt-get.