3076 Views 1 Reply Latest reply: Feb 4, 2011 11:09 PM by Seedomang
Why are you attempting a sync with the backend?
The exchange back end implies that you have a front end server.
By design Microsoft does not suggest that your backend servers ever touch the public Internet through a nat firewall period.
The front end is the exposed server through ssl and https: one in the same.
To be exact ms suggests that the front end be in a dmz with an ISA server in front of it to protect you fully.
The web server does all the work here. Through ssl and the network active directory users name and password is what is needed to connect the iPhone and iPad to your exchange front end server through owa.
Also it is implied that you have and know your fqdn for your front end server to mask the actual server name.
If your server roles are a true front end back end solution this is what you do. Exposing the backend is not a good idea.
The front end server takes the info from the backend server as needed and puts that info in a streaming database for optimized web usage. This is why the front end is designed separate. If you are using owa through the backend only then it is just an exchange server.
I have designed my company exchange solution and this is-what works.
Exchange 2003 sp2 backend cluster
Exchange 2003 front end web server owa to be exact
Forms based authentication and ssl
Exchange active sync enabled
Outlook mobile access