In last April, I wrote a post about setting a default channel for authenticated users in Mumble/Murmur using a hardcoded solution. In the meantime, fwaggle has submitted a patch to the Mumble project to make this function switchable using the serverside configuration file. Although this function hasn’t been documented yet, it has made its way into the current Mumble version 1.2.3-rc2.
So, it is now possible to prevent authenticated users from automatically rejoining their last used channel without editing and compiling the source code. Simply open your server configuration file (usually ‘murmur.ini’) and add the following line:
Make sure to restart Murmur after changing the settings. Authenticated users should now join the default channel after connecting to the server.
If you want to change the default channel, you may want to have a look at my old post.