[Zope] Linking to Mailing List Managers

Hi, With all the talk about Syndication I started to think about linking with mailing list managers. Ideally I'd like members of my portal site to be given a free email address <username>@<sitename>, bouncing all mail to that address to their real email address. In a roles-based membership scheme it would also be nice to be able to send email to <role>@<sitename>, so the email goes to all members with that role. Has anyone done anything like this, linking to an existing Mailing List Manager like Majordomo from Zope? I want to manage the whole thing through some Zope management pages. - Ian Sparks.