we are having the envoronment 6 crosss domain Exchange with hybrid exchange 2k3,2k7,2k10.
we have a request like user in Domain A wants to move mailbox to Domain B.
Domain A- exch2k7,2k10 cross domain || Domain B- Ex2k3
I have checked 2Way trust is there btwn the domains . Then i have tested like disable the test mailbox in Domain A , while reconnect the mailbox i have tried to browse the object in Domain B to map the mailbox . But it is not browsing Domain A.
Then i tried vice versa Domain B user object trying to create mailbox and browse the Domain A's mailbox server , in the drop down box it is not showing all other Domain Mailbox Databases .
Can we migrate the Ex2010 mailbox to Ex2k3?
Since Mailbox size 16GB its not easy/good to migrate.?