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New Contributor
Posts: 7
Registered: ‎08-11-2008
My Device: Not Specified

message flow from device to Exchange

Hi there,

I was reading the "Feature and Technical Overview for BES 4.1.6" and was looking onto the mailflow diagrams, especially the one describing the mailflow from BB-device to Exchange.

Looks quite simple... device connects to port 3101 ...  but STOP, how is that possible? My firewall is configured for 3101 outbound, bidirectional ( allowing answers to outbound connections ).

Is the connection to spr.xx.blackberry.net kept open after my first outbound traffic - so that connects from wireless devices are possible?

How are the Blackberries able to connect to port 3101?

 

Answers are more than welcome!

 

Greetings

Franz-Georg Clodt

Guru III
Posts: 32,189
Registered: ‎06-25-2008
My Device:

I'm rockin the BlackBerry DTEK60, Passport, Z30, Z10, Q10, BlackBerry Mini Stereo Speaker, 64 gig PlayBook,BT Headset HS-700

My Carrier: I am on AT&T. Please edit your Personal Profile with your DEVICE TYPE, DEVICE OS and Carrier

Re: message flow from device to Exchange

SRP makes and keep a connection open so yes it is coming in from there sort of.

 

device goes to wireless

wireless goes to BES

BES tells exchange to send email

Exchange sends it

 

 




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Guru III
Posts: 32,189
Registered: ‎06-25-2008
My Device:

I'm rockin the BlackBerry DTEK60, Passport, Z30, Z10, Q10, BlackBerry Mini Stereo Speaker, 64 gig PlayBook,BT Headset HS-700

My Carrier: I am on AT&T. Please edit your Personal Profile with your DEVICE TYPE, DEVICE OS and Carrier

Re: message flow from device to Exchange

http://na.blackberry.com/eng/deliverables/2750/FTO_X_456536_11.pdf

 

does list how it is done

 




Click here to Backup the data on your BlackBerry Device! It's important, and FREE!


Click "Accept as Solution" if your problem is solved. To give thanks, click thumbs up
Click to search the Knowledge Base at BTSC and click to Read The Fabulous Manuals

BESAdmin's, please make a signature with your BES environment info.


SIM Free BlackBerry Unlocking FAQ
Follow me on Twitter @knottyrope


Want to thank me? Buy my KnottyRope App here


BES 12 and BES 5.0.4 with Exchange 2010 and SQL 2012 Hyper V


Forums Veteran II
Posts: 2,744
Registered: ‎04-01-2008
My Device: Bold

Re: message flow from device to Exchange

Looks quite simple... device connects to port 3101 ...  but STOP, how is that possible? My firewall is configured for 3101 outbound, bidirectional ( allowing answers to outbound connections ).

Is the connection to spr.xx.blackberry.net kept open after my first outbound traffic - so that connects from wireless devices are possible?

 

>> Yes, and No.  The connection is persistent, no the devices do not connect in directly via new TCP sessions.  The already existing session is utilized.

 

How are the Blackberries able to connect to port 3101?

 

>> They don't.  The connection held open by your BES > RIM and RIMs magic does all the translation.

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New Contributor
Posts: 7
Registered: ‎08-11-2008
My Device: Not Specified

Re: message flow from device to Exchange

Thanks a lot for your answers! That clarified how it works!

 

Franz-Georg Clodt