From the Policy Guide:
Attachment Viewing IT policy rule |
This rule specifies whether a BlackBerry® device user can view supported attachments in messages and calendar entries.
The default value is Yes.
A BlackBerry device can use this rule if the BlackBerry Attachment Service is connected to the BlackBerry® Enterprise Server
using the BlackBerry Attachment Connector.
Changing this rule to No does not prevent a user from downloading or viewing native attachments on a BlackBerry device.
Remember that if you have Content Protection enabled on all memory types it is not possible to copy attachments off the device via USB as they are all encrypted.