talkd doesn't print a message

I wanted to use talk with my brother (we both have Debian Jessie). So I installed inetutils-inetd, inetutils-talk, and inetutils-talkd. Now I wanted to try whether it works. So I created a testuser named foo. Then I logged in as this user and as my original user. I switched mesg on both terminals to yes and then tried this on my originals user: $talk foo [Service connection established.] [Checking for invitation on caller's machine] [Checking for invitation on caller's machine] [Checking for invitation on caller's machine] [Checking for invitation on caller's machine] [Checking for invitation on caller's machine] [Checking for invitation on caller's machine] And foo never gets a message like it is described in the manpage. I also checked that inetd is running and enabled talkd by inetd. Here's the only line in /etc/inetd.conf that isn't uncommented.: talk stream tcp nowait root /usr/sbin/talkd talkd I also tried to let both users try to talk to each other, but that didn't work either. Does anyone know how I can get talk to work?