Can anyone explain how to setup ISA 2004 to allow active sync to be passed to our Exchange Front End server?
The ISA 2004 server is in a DMZ and already has a OWA publishing rule that only allows HTTPS protocol.
The problem is when an Iphone tries to pass thorugh isa it says Denied connection. In the ISA logs, it mentions
client username: anonymous
HTTP methid: OPTIONS
Action: Denied connection
Im not sure if we need to make any modifications to the current OWA publishing rules which works for standard OWA traffic.
When we redirect our firewall directly ro the Exchange FE server we can get Activesync to work on iphone.
This would mean that ISA is preventing access, Im struggling on what to look for on ISA. Please assist.