has someone a good idea for this problem:
Our CEO wants access to his eMail from everywhere with his MacBook. But ... he dont want to start a VPN Tunnel before (With VPN everything is working).
We tested TouchDown via ActiveSync and Mobility Service, this worked well, but this client seems to be to "simple" for him.

On the other side i dont want to open our firewall for direct access via IMAP.

I am at one's wits' end.... :-(