My mail flow is this(split domain):
Internet > Zimbra (some accounts) then > Exchange (SBS Windows).
This works great BUT:
When mail flows from internal accounts on exchange, it goes into the users old mail box(which was migrated to Zimbra) and not to zimbra.
How to force exchange to send its mail via zimbra or figure out which accounts need to go to zimbra's server.
This is the only thing holding me back from purchase so hopefully can get this resolved.