I am in the process of setting up ActiveSync for the iPhone.
We have an Exchange 2003 sp2 backend server and an ISA 2004 server. The ISA server sits in the DMZ - so far I have ensured that ActiveSync is enabled and setup a web listener on the ISA (essentially it is acting as the exchange frontend)
Connections between the Iphone and ISA server on port 443 are allowed.
Connections between the ISA and Exchange server on port 443, and 80 are allowed.
I have tried to test the connection using https://www.testexchangeconnectivity.com/
But it reaches the SSL validity and fails (despite checking to ignore) - I have temporarily setup a CA in the domain and am now trying to figure out which server to setup teh cert for and have made various 'unsuccessful' attempts
Oh, we don't have OWA setup so if there is anyone who has been in the same situation ad maanged to get this working I would appreciate some advice