For some reason we are unable to use Microsoft Outlook while using a cellular aircard, we are continuously prompted to log into the virtual server name of our Exchange 2007 cluster. The password will never accept. The only way to get around this is to modify the account settings on the local Outlook profile and tell it to not connect using HTTP. If someone is using their home internet connection and not the aircards, everything works fine for them.
Do Cell companies handle RPC over HTTP traffic differently than a "landline" ISP?
The steps we are taking to open Outlook are as follows:
1. Connect to Cellular network
2. Open Cisco VPN Client and connect
3. Launch Outlook.
4. Outlook prompts to login into "ExchangeVirtualName"
I do know of some certificate issues for our Exchange environment that prevents us from being able to use Outlook without the VPN, however this is a slightly different issue (although possibly related) as this works fine from a standard cable/DSL connection. We have tried with ATT, Verizon and Sprint, all have the same result. We are running Windows XP Pro with SP2 on all machines.
Thoughts? Any assistance is greatly appreciated.