Listserv Craziness

I am new to creating my own mailing lists with Python.

Using the control panel, I created a mailing list:

When I send an email to this address (which works), the address given in the footer of the message and help page is:

Emails to that address bounce

And the unchangable name in the General options is

I want the email address to be and the name to be Avalon-College.

How do I achieve this?

Thanks in advance,