Sending An Email Message From The Blackberry Device; Message Attachment Viewing Security Features - Blackberry ENTERPRISE SOLUTION SECURITY - ENTERPRISE SOLUTION - SECURITY TECHNICAL Overview

BlackBerry Enterprise Solution
The BlackBerry Enterprise Server is designed to maintain a constant, direct outbound TCP/IP connection to
the wireless network over the Internet through the firewall on port 3101 (or 4101 in the case of a BlackBerry
device that supports implementation alongside an enterprise Wi-Fi network). This constant connection
enables the efficient, continuous delivery of data to and from the BlackBerry device.
8. The wireless network routes and then delivers the encrypted message to Bob's BlackBerry device.
9. Bob's BlackBerry device receives the encrypted message. The BlackBerry device then decrypts and displays
the message for Bob to read.

Sending an email message from the BlackBerry device

1. Bob responds to Alice's message by composing an email on the BlackBerry device. When Bob sends the
message, the BlackBerry device compresses, encrypts, and then sends the message over the wireless
network.
All messages that users create on their BlackBerry devices contain the necessary BlackBerry Enterprise
Server routing information for the wireless network to make sure that the wireless network delivers the
message to the appropriate BlackBerry Enterprise Server.
2. The BlackBerry Infrastructure routes the encrypted message to the BlackBerry Enterprise Server on which
the BlackBerry device user resides.
The connection from the BlackBerry Enterprise Server to the BlackBerry Infrastructure is a two-way TCP
connection on port 3101. The BlackBerry Infrastructure directs messages from the BlackBerry device to this
connection using the routing information in the message.
3. The BlackBerry Enterprise Server receives the message.
4. The BlackBerry Enterprise Server decrypts, decompresses, and sends the message to the messaging server.
The BlackBerry Enterprise Server does not store a copy of the message.
5. The messaging server delivers the message to Alice's computer.

Message attachment viewing security features

The BlackBerry device supports attachment viewing through the BlackBerry Attachment Service. The BlackBerry
Attachment Service enables users to perform the following actions on their BlackBerry devices:
•
view Microsoft® PowerPoint® slide shows, including those in .pps file format
•
view .bmp, .jpg, .jpeg, .gif, .png, .tif, .tiff, and .wmf file formats
•
view .doc, .dot, .txt .html, .htm, .pdf, .xls, .wpd, and .ppt documents in a browser
•
open .zip files and then open any content files of supported formats
•
open .wav files
•
enlarge images in .tiff format (such as scanned documents or faxes)
•
access inline thumbnail images for attachments that are embedded in messages
The BlackBerry Attachment Service is designed to prevent malicious applications from accessing data on the
BlackBerry device by using binary format parsing to open the attachments and prepare them to be sent to the
BlackBerry device for rendering. The BlackBerry device does not run applications that are sent as attachments in
email messages.
www.blackberry.com
Sending a message from a BlackBerry device to the computer
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