[Twisted-Python] mailing list settings

[Phil Mayers]

What's the current way to change list setting e.g. subscribed address? 
The mailman links seem to be giving tracebacks e.g.

exceptions.OSError: [Errno 24] Too many open files
_______________________________________________
Twisted-Python mailing list
Twisted-Python@twistedmatrix.com
https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python