Hi I am using internal certificate for Exchange 2007 and it is working fine for local user. Users with mobile device like as smartphones are able to link to Exchange server on their device. OWA is working fine from outside/inside LAN. I tried to configure Outlook anywhere either automatically or manually, but outlook was not able to find the Server. But it is working on MAC's Outlook !!! Can anybody explain how is it possible not working on Windows but it works for MAC? regards, Shahram.

Hello, Outlook on MAC? Do you mean Entourage? While Outlook 2003 and later clients can use Outlook Anywhere, i.e. RPC over HTTP, using SSL for access to Exchange mailboxes without the use of a VPN client, Entourage clients use WebDAV/EWS. So the mechanism is different. For Outlook Anywhere issue, you can use the RCA tool to test the connectivity: https://www.testexchangeconnectivity.com/ Thanks, Simon Wu Exchange Forum Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com