We have registered a new domain, and would like email that is sent to this domain, to just be delivered to the appropriate user in our primary domain. I thought I could do this with a simple mail rule. If user = user@newdomain.com then deliver to user@olddomain.com. It doesn't appear that easy, unless I'm missing something. I'm trying to avoid managing all the new alias's at the user level, or even at the emailaddresspolicy level (unless that's how I need to accomplish this).
Does anyone have any suggestions?