Powershell is a requirement for installation of Symantec Mail Security for Microsoft Exchange (SMSMSE) on Microsoft Exchange server which has Hub Transport and CAS roles only server. However, the installation shows N/A (Not Applicable) on PowerShell and allows user to click "Next" to continue the installation. As a result, SMSMSE transport agents may fail to install when PowerShell is not accessible.
Symantec is aware of this issue and will update this document when a solution becomes available.
Please make sure PowerShell is accessible by the login user before installing SMSMSE.
Microsoft Exchange 2007 / 2010