I am facing a slight confusion to setup Blackberry Express Server 5.4 in exchange 2010 coexistence with Exchange 2007 scenario.
I have existing Blackberry Enterprise Server 4.1 running in exchange 2007 environment. Few days before I have setup & Configured Exchange 2010 SP2 with coexistence of existing exchange 2007.
I have gone through some article and found that BES 4.1 is not compatible with Exchange 2010. And we have decided to install new BES 5.4 Express edition for our exchange 2010 users.
Existing BES 4.1 is configured with one Service account/mailbox called “BESadmin” with appropriate rights on exchange 2007.
Can I use the same service account/Mailbox “BESadmin” for new BES 5.4 with exchange 2010 if yes then how to proceed with it?
Is it to move BESadmin mailbox 1st to Exchange 2010 server after that we need to set the permission according to exchange 2010? Or if yes then is there any impact to existing users ?