Ah ok, split domain.
So that seems all ok for the Zimbra side of things... but do you know of any information on what I need to do for the split domain on the Exchange side?
I am planning to have a completely separate domain name for use with Zimbra, and I want Zimbra to be handling the actual sending / receiving of mail for that domain.
Obviously all I need to get Exchange to do is bounce any mail of that certain test domain, onto the Zimbra IP address... but I'm not sure how to go about doing that.
Thanks for all the info so far guys - this is really helpful.
I've not been this excited about testing a new product / system for a long time! Zimbra seems like the answer to my prayers at the moment
