Zimbra Caveats

• Zimbra wants a dedicated box. Don't try to fake it. Just give it what it wants, it will make you happy. Specifically, it wants HTTP{s}, SMTP, IMAP{s}, POP3{s}, LDAP, and some other ports for it's own admin functions and auxilliary software (virus and spam scanning for example).
• Zimbra is not built for Debian distros. Get over it. You're giving it a dedicated box anyway (or you should be, see the above point), so just throw Centos on, and run the RHEL binaries. You can try to make it go if you really must, (perhaps ask MattBrown for help) but if you treat it like an appliance, it will work like one, and you'll get support.

Configuring Zimbra With An Existing MTA For Testing

Say you'd like to try out this flashy new technology, and deploy Zimbra as part of an existing domain. This is a lot harder than it could be. Here is what I did.

• saving at this point so noone gets zealous and overwrites!*