What happens to data that is not delivered to a BlackBerry device
What happens to data that is not delivered because the connection between a BlackBerry Enterprise Server and the BlackBerry Infrastructure closes
Ten minutes after the connection between a BlackBerry® Enterprise Server and the BlackBerry® Infrastructure closes, the BlackBerry Infrastructure notifies the sender’s BlackBerry device and deletes the message that is not delivered. The wireless network can queue up to 5 undelivered messages for up to 7 days. If more than 5 undelivered messages exist in the queue, the BlackBerry Enterprise Server stores the messages in the BlackBerry Configuration Database. The BlackBerry Infrastructure does not store data to send to BlackBerry devices.
If the BlackBerry Infrastructure is not responding and the connection closes unexpectedly, the wireless network deletes the undelivered messages. The BlackBerry device does not receive the messages and it does not send acknowledgment packets to the BlackBerry Enterprise Server. When the BlackBerry Infrastructure becomes available again, the BlackBerry Enterprise Server resends messages that it did not receive acknowledgment packets for.