I have a Two member DAG I dismantled.
I now need to restart the second 2010 exchange in the 2008 R2 Domain, at 2003 domain func level.
I need to restart the vm, get the second exchange on line, transfer some mailboxes from the original(production) exchange.
make sure email continues to flow with that split of mailboxes between the two.
Note, original production exchange has all mailbox roles CAS, HUB, Mailbox.
THIS IS not for a DAG re-setup.
Then when this is working again under for all mailboxes for the the 'accept mail from domains' that already existed want to do the following.
1. Setup the second re-added exchange 2010 to accept mail from new company domain name(external domain that exist).
2. then terminate vpn connectivity at two sites no longer owned.
3. then I will be stuck cleaning up my existing AD metadata, while they(new owners with their staff of 100 in IT) do whatever works for them. this works for them pre and post- how nice.
Is this doable, should be, and provide any steps on how to get the second exchange re-added with the above expectations, without messing up existing mail flow in the single domain.