We are currently running MS Exchange 2010 with Blackberry Enterprise Server Express with around 20 users in our organization.
All BlackBerry Enterprise Server Expression components (including SQL Express and BB Database) are installed on one single Exchange Server (Client and Hub Transport Roles).
We have got one single domain and both Exchange and Blackberry have been running alright for the last 12 months.
Now we are about to implement Exchange CAS Array with Network Loading Balance.
Basically, we need to add one more Exchange Client Server and configure the RPC Client.
The Exchange side of things is pretty much covered with no issues so far.
My question is more about the Blackberry Enterprise Server Express.
How can we ensure the messages on Blackberry will be delivered to their client/devices when Exchange is working under NLB?
Is there any way to make Blackberry Enterprise Server Express work with redundancy, I mean in parallel with 2 Exchange Client Server without sending duplicated messages or delivery failures?
Has anyone ever implemented something similar to this environment?
Any help is much appreciated!