Update: How-to with video – http://www.nullsession.com/2009/12/07/exch2k7-complete-install-on-windows-server-2008-r2-core/
For those of you who are regular visitors (or google a lot) you might remember the attempt to get Exchange 2007 running on Server Core 2008 R2. Everything except the mailbox role went fine.
Well, after A LOT of trouble I’ve finally installed the Exchange 2007 mailbox role on Server Core 2008 R2. You read that right: Exchange 2007 running on Windows Server 2008 R2 Core. And YES, I do know that this is completely unsupported at the moment. Now you’ve been informed too! (As in: do not put this in production!)
Here’s a screenshot, and a longer article / video will show up as soon as I’ve reproduced the whole shebang.