I have a customer with a misconfigured 10.5 environment with 1000's of mailboxes and a few Call Handlers. Its not AD integrated, alias for the mailboxes are not consistent, extensions, some are 4D, 7D and want to move to 10D.
Typically, I have used Cobras as we all do in the past for migrations of old to new. I have not spun up two of the same environments and tried to move Call Handlers or do remapping. My question is it worth my time to try and rebuild everything the correct way or should we dig our heals into COBRAS and prepare for a long battle of remapping?
I assume if we move over the mailboxes and remap or update the alias to their correct alias in AD, when we integrate it all, it *should* update their extension on their mailbox correct? Or is it vice versa, match extension, update alias from AD?
Good times!
Thanks!