Required version of the BlackBerry Enterprise Server (BES) must be installed.
Earlier versions of the BES have security vulnerabilities. CYBERCOM IAVA directs all DoD installations upgrade to required version due to BlackBerry ending support for version 4.1.6 and 4.1.7 as of 2 July 2011.
The BlackBerry Enterprise Server (BES) version is 5.0.4 or later.
Interview ISSO and BlackBerry system administrator. Verify the BES is one of the required/approved versions. Required/approved versions of the BES are: BES 5.0.4 (or later version). From the BlackBerry Manager, select "Help" to view the version number.