We have Exchange 2010. We have a divestiture we just went through and split off 300+ employees from the company. Those employees have gone to their own domain and migrated their data to Office 365. We currently have their Office 365 accounts as Contacts within Exchange. We need to fwd email received from mail servers and domain for those users to their Office 365 accounts for two more years. Can I put their email with our company on the contact and make it fwd that way making it so I can delete their AD and email accounts from my AD and Exchange?