Symptoms
The main performance issues in a Microsoft Exchange Server 2013 environment that's running BlackBerry Enterprise Server 5 are as follows:
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logon failures
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receiving non-delivery reports
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a high CPU usage
Note The performance issues include but don't limit to the previous issues.
Cause
This issue occurs because Exchange Server 2013 hasn't materialized the new restriction from BlackBerry Enterprise Server 5.
Resolution
To fix this issue, install Cumulative Update 10 for Exchange Server 2013.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
