When upgrading Spark to 2.8, it fails to login. It appears to be an issue with server configuration. In my current setup (running on Ubuntu), the server name is the default showing up as “core”. When our clients connect, we have a dns record that simply points to the server for chat.localdomain. Do I need to modify the server name for spark 2.8 to work and if so, how can I do that without breaking the server configuration? If I need to create a SRV record instead, what is an example of the proper record to be created (using Microsoft DNS service)? Please advise. Thank you.