I've got an SBS site and we're migrating from POP to exchange.
I can't migrate the users in one fell swoop, it's too difficult, so I want Outlook to pick up mail via POP, deliver it to the Exchange account, and send it from the exchange account. Eventually I'll replace the mx records and cancel the POP accounts.
As I can't migrate all users at once, I need exchange hub transport to send local mail to the external mx servers for delivery to the external pop accounts. At the moment it sends local mail to the internal Exchange account which not every internal user has access too yet.
How do I configure this?