If you are deploying BlackBerry in Exchange 2010 environment, one of the requirements is to change throttling limits on Address Book Service from default 50 to 100,000. While I reserve my judgment to what number is right, you will have to change it to some number above 50 for sure.

If you have many CAS servers where you have to change this, it quickly becomes painful because you have to change config file and restart services.

Well, sweat no more if you are in this situation. Use my script instead.

You can download the script here: Set-ThrottlingLimit.ps1

I will avoid posting entire code here but below are some examples of how you can run it:

The following example will query specified server for current value of MaxSessionsPerUser:

Set-ThrottlingLimit -Server Server1

The following example will set MaxSessionsPerUser to 5000 and restart services MSEXchangeRPC and MSExchangeAB without confirmation:

Set-ThrottlingLimit -Server Server1 -MaxSessionsPerUser "5000" -force $true

The following example will set MaxSessionsPerUser to 5000 and restart services MSEXchangeRPC and MSExchangeAB after confirmation from user:

Set-ThrottlingLimit -Server Server1 -MaxSessionsPerUser "5000"

Questions and Comments are always welcome.

Originally posted at http://blogs.technet.com/bshukla