[Mailman-Users] multiple domains

[bergenpeak at comcast.net]

I'm running mailman on a server that has an existing domain 
(abc.domain.com) and resolves to some IP address X.   Couple of 100 
lists running in this setup.

I've recently gotten another DNS entry defined (xyz.domain.com) that 
also resolves to IP address X.

I'd like to setup new mailman lists to use the new domain--  
mmlist1 at xyz.domain.com.  What do I need to change to support this?  Note 
that I'd like the existing mailman lists in the near-term to continue to 
use there existing "abc.domain.com" domain.

Now, once mailman supports new lists in the new domain, I might want to 
convert all exiting mailman lists to use the new domain.  Is this 
easy/straightforward?  I'd like the archives to be maintained as well 
during this conversion process.

Thanks