[Mailman-Users] Users with utf-8

[just.mailman at lesve.org]

I try to add member to maillist.

./add_members -r filename.txt listname

in the file filename.txt it will exist a user like
Lönn <lonn at gmail.com>         #  Written as utf-8

When I look at memberlist afterwards at the web will it look like

lonn at gmail.com
Lönn                                        # Written the utf-8 as two characters

What is the problem and what is the solution

/LeSve