hello EE community,
We were running Exchange 2007 and had stood up Exchange 2013 in parallel for our initial 2007 to 2013 migration. We were at the point where we were ready to migrate the mailboxes over to 2013. However, at the end we ended up going to Office 365 which we recently completed migration over to. We're running AD sync on our domain controllers for syncing the AD accounts/attributes. The on-premises (2007 & 2013) exchange servers have been powered down for couple of days and everything is still working as expected as far as emails goes. Now we need to decommission and cleanly remove them from our environment. Could someone be kind enough to provide me step by step process of properly removing both verison of exchange?