Load Balancing DNS / Virtual Host question

[drhughes]

I have a question in regards to setting up load balancing. The instructions says, "You set up a virtual hostname of mail.example.com and configure four mail servers..." My question is in my DNS server, which mailbox server do I point the virtual host name to: mail1, mail2, etc,etc? Then in the admin console, which mailbox server gets the virtual hostname?

In the long run I would like to split my users mail onto 3 or 4 mailbox server. For example I would like a domain such as zmmail.domain.com to be the URL the users access their web from. Then have it determine if the user's mailbox is on zmmail1.domain.com, zmmail2.domain.com, or zmmailX.domain.com.

Thoughts???