[wickhamandrew]

Does anyone know how to configure OS X Postfix to allow split domain with Zimbra? I have looked over the guide and I believe I have everything working on the Zimbra side of things but I can't figure out how to do the configuration to set up OS X Postfix as our primary mail server.

Here's what we want our setup to be:

Primary Mail Server:
Mail Domain: lake.stark.k12.oh.us
DNS: x3.lake.stark.k12.oh.us
IP: 10.24.45.2

Secondary Mail Server:
Mail Domain: lake.stark.k12.oh.us
DNS: zimbra.lake.stark.k12.oh.us
IP: 10.24.40.97

Any help is greatly appreciated. Thanks a ton.