I am about to migrate a Exchange 2003 site to Zimbra 6. I would like both mail servers to co-exist while groups of users are migrated over several weeks.
I plan on having the exchange server act as a smarthost for the zimbra server. Is there a way on a per user basis I can configure exchange to send mail to the zimbra server? I know this can be done to another domain (Forwarding Mail to an External Recipient) ; however, I would like to do it to the internal Zimbra server.
I have done several sendmail migrations this way. Any hints or tips would be very helpful. Thanks.