illegal list name

[Sandra Quiles]

Hello. I have followed the instructions of a post on Installing  
mailman on OS X 10.4, and got to step 7 and hit this error.

The hard- and software involved is: OS X 10.4.x, Python 2.3.5, Mailman  
2.1.5 (using this outdated version because I don't know how to upgrade  
Python despite going to the Python site.  It wasn't obvious to me  
which Linux package was an upgrade, and the installation of MacPython  
2.6.1 was not recognized by Terminal).

So. illegal name error. it list listname as 'mailman@<mycomputername>'

that's in response to the 'bin/newlist mailman' command

also, I purchased the Postfix Enabler, but have no clue what to do  
with the software.

Tips, advise, hand-holding welcomed.

-- sandra