We have Exchange 2010 setup on company server. All clients on internal network are connected to Exchange with Outlook 2007 and all is fine we can rec/send i.e.. We are needing to connect to Exchange from remote laptops and we have the proxy setup correctly on the laptops. We use a Sonicwall TZ200 and our objects are set up for Exchange mail flow per their spec. My question is do we have to add a specific object to the Sonicwall for Proxy Setup to use Outlook 2007 remotely?. The error we are receiving when trying to sen/rec is
Task Microsoft Exchange sending reported error (0x80040115) The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.
Laptops are connected to the internet via wireless cards or home wireless networks and all is fine. Anyone with feedback please let me know. Once again I know it is set-up but I'm missing something simple I believe.