I've started to sketch out some requirements for improving the virtual hosting support for Mailman. It's not finished, but I'm soliciting comments anyway. Please see

http://www.zope.org/Members/bwarsaw/MailmanDesignNotes/VirtualHosting

and please add comments to the Wiki page.

I'm not sure whether this stuff will make it into Mailman 2.1 or will have to be postponed.

Cheers, -Barry