Well the title says most of the question.
I already have a very good setup with 3 mail servers with this setup. Postfix authenticating through MySQL with SASL and Courier as my Imap with virtual mailboxes. I am very happy with this setup and had no problems so far.
I installed Zimbra succesfully and it works fine but that was done on a different machine. It works great and has great functionality and looks.
Now my problem is that I want to use zimbra with my existing installation. That is install it on a different machine and use my existing email server setup to serve Zimbra as well as the existing MySQL which are on a different server.
Is that possible.