I have a new Exchange 2010 server with some mailboxes on, but cannot seem to connect with any LAN client (tried 3 so far). OWA /works/ internally, is the weird thing (from the same clients that can't connect using Outlook. I've tried manual and automatic configuration. Outlook 2007 tells me:
"The Action Cannot be Completed. The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action."
During automatic configuration, a login box pops up like it WANTS to connect, but it still gives the error...
I DO have a public (CoGdaddy) UCC cert installed on the server. My clients do have a default gateway... I can successfully ping+nslookup the exchange server (and the GC server) and the domain name.. I've even tried setting up Outlook with RPC settings and it still gives me the error!