[Mailman-Users] Removing subscriber with invalid character in email

[Timothy Gerla]

Someone managed to subscribe to my list using a very strange email with
several unprintable (LF, I think) characters in her username. I can't
remove the entry because no matter what I try, Mailman chops off the
invalid characters and reports that the user does not exist in the list.

How can I remove this entry without rebuilding the list from scratch?
I've tried bin/remove_user. Any ideas?

I'm running Mailman 2.0.8.

Thanks,

-Tim