[Mailman-Users] confirming address subscriptions in email?

[Dennis Carr]

A curiousity for you guys.

I know that I can subscribe new users by doing the following:

To: foo-l-request at chez-vrolet.net
set authenticate password-goes-here
subscribe address=user at somewhere.com
end

...but if my list is set to admin confirm, I need to go to the web 
interface.  I do not see a way in the documentation to do this via email 
only.  Is there a hidden way?

-Dennis Carr