ASP.NET, SQL Server, WPF, C#, VB.NET

I heard that Exchange 2003 SP2 will not require to open the ports on  
  
the firewall in order to have ActiveSync working with handheld over the  
  
air(GPRS).  Does anyone know if it is true?  
  
Secondly, I am not quite clear how Exchange 2003 communicates with  
  
handheld device over the air(GPRS). Is there anything need to specify  
  
(server or handheld ends) who is the data carrier? If I send an email  
  
from handheld, how does it push the message to Exchange server which is  
  
behind a firewall without opening a or many firewall ports?  
  
Thanks,  
  
Fshguo.

guo.daniel@gmail.com wrote:  
  
You need port 80 and 443 open, which are HTTP and HTTP SSL. You don't  
  
need anything else. Same things you need for OWA basically.  
  
Sort of. For Exchange working with most (all?) Wm devices today it  
  
needs the devices phone number/address, so 15551234567@tmomail.net for  
  
example. This is only so it can send an SMS to the device to prompt a  
  
sync. You can set this on the device and then do a manual sync and it  
  
will push that phone number up to the server for your account. It is  
  
in the ActiveSync options. If you set up scheduled syncs on the device  
  
and don't rely on any push, then you don't need to set this.  
  
Once you have Exchange SP2 *AND* the MS Security and Feature pack on a  
  
WM5 device (look for it this winter/spring from your carrier as a ROM  
  
update) it no longer cares. It is done with an HTTP-REFRESH command  
  
that the device initiates and then waits for the server to tug on the  
  
thread - carrier independent.  
  
--  
  
__________________________________________________________________________________  
  
Ed Hansberry  (Please do *NOT* email me. Post here for the benefit of all)  
  
What is on my Pocket PC? http://www.ehansberry.com/  
  
Microsoft MVP - Mobile Devices   www.pocketpc.com  
  
What is an MVP? - http://mvp.support.microsoft.com/

I heard that Exchange 2003 SP2 will not require to open the ports on  
  
the firewall in order to have ActiveSync working with handheld over the  
  
air(GPRS).  Does anyone know if it is true?  
  
True, it just use the SSL 443  
  
Secondly, I am not quite clear how Exchange 2003 communicates with  
  
handheld device over the air(GPRS). Is there anything need to specify  
  
(server or handheld ends) who is the data carrier? If I send an email  
  
from handheld, how does it push the message to Exchange server which is  
  
behind a firewall without opening a or many firewall ports?  
  
Yes, it does communicate using GPRS, the only thing you need to do is  
  
subscribe the Data Plan from your ISP.  
  
Shaji  
  
http://www.MessagingTalk.org