We created a rule in Outlook 2010 to forward incoming e-mail "which is a meeting request" to an external e-mail address. As that's only possible for existing contacts, there's a corresponding contact in the GAL holding the external e-mail address.
No matter what we do, the rule simply won't work.
I would use delegates, but I understand that will only work among local users.
We're running a Small Business Server 2011 Std. in German. The server is relatively new and hasn't been messed around with [yet], so I don't think we screwed up anything.
And idea where we're missing it?