I'm very comfortable with CentOS, however the only issue I see is that CentOS is not officially supported by Zimbra. I'm currently testing Zimbra on a Ubuntu build but would prefer to roll it out with CentOS. No hard feelings towards Ubuntu but this week is the first I've ever touched it. Any thoughts on Zimbra support for CentOS? Would you roll out a production environment of Zimbra on top of CentOS even though its not officially supported?