Hi,
We have a forest with multiple Domains in it. Each domain has exchange servers installed in it. & All are installed in Single EXCAHNGE Organization.
One of the domain from the same respective forest has decided to upgrade their exchange server from 2007 to 2013.
So my basic query is, do we require to upgrade the service pack on all exchange servers(which is a pre-requisite) in the organisation forest wide or can we just upgrade the service pack on the exchange server in that specific Domain where this activity is planned ?
As my organization has around 30 Exchange servers running across 10 Geo locations and are running exchange 2007 Sp1 & exchange 2010 SP1, So immediately installation of service pack in all servers would require additional time and approvals.
Is this possible to just upgrade exchange servers of My domain with latest service pack and install exchange 2013 in domain ????