We're hosting several domains on our infrastructure, exchange and blackberry hosting included.
Some of our clients have a direct vpn-connection into our datacenter because it's needed for their applications.
And this causes following problem:
Some Outlook clients connect to our exchange-server via direct mapi (tcp/ip - not via rpc over http) and that causes, that they can see every mail-address from other domains.
That's why we want to avoid users from connecting their clients directly via tcp/ip. They should only connect via rpc over http. Is there any whay to accomplish this without avoiding our BlackBerry Enterprise Server to connect to our exchange?