Outlook connecting at remote site question

[boris]

I have a client with 2 locations, SBS2003 at main office, Server 2003 standard at branch office. 2 different network domains. How do I get Outlook 2007 to connect from branch office to Exchange at main office? I keep getting an error "Cannot open your default e-mail folders."

I've edited the host file, added an RPC key in the registry, tried always prompting for credentials and entering domain\user, and renamed the OST files (on the client PC). I know I can always use OWA, but would like to use Outlook.

[grestone]

Is the cert installed from remote domain?

manually import it if self signed.

then Setup RPC over HTTP in Outlook.