Hi.
I have the following setup & scenario in my environment:
3 x Exchange Server 2010 w/SP3; 1 x mailbox role, 1 x CA/Hub role + 1 x edge role.
I have a set of about 50 users on linked mailbox (on a specific domain e.g. xxx.com) who have moved out to Office 365 platform.
I need to keep their existing mailbox for specific duration due to compliance requirements.
I'm facing an issue where emails sent by my other Exchange users to this set of users (xxx.com) is still being sent to the existing internal mailbox rather then to their Office 365 mailbox.
How can I resolve this permanently?
For now, I have set a transport rule for every single mailbox to send a copy of the email to Office 365 mailbox.
Appreciate if someone can guide me through a permanent solution, as I'm wondering how would the routing work once these mailboxes have been removed.
Regards,
spurs_adr
Adrian