Autodiscover over VPN, multiple domain on Exchange 2010

Hi folks,

Is here somebody who can help me?

I have customer with set up Windows Server 2008 Std with installed AD and Exchange 2010 - server is running in virtual environment.

2 accepted domains are set up there. Let say first parent domain is called domainA.com and second accepted domain is called domainB.com. Server is located in city X and in the city Y is another small office connected to main HQ via IPSec VPN tunnel. There are different IP ranges on both ends of the tunnel - in HQ there is 192.168.1.x and in small connected office there is IP range 10.0.0.x. Connection to DC and exchange is solved with help of hosts file.

I set up A record autodiscover.domainA.com plus I added next forward zone do DNS - domainB.com with entry autodiscover.domainB.com pointed to DC server. On the LAN server this works, but how to solve this over IPSec VPN tunnel? OWA is running, activesync as well, but we are facing issue that OOF not work from Outlook as well as sharing of Calendar.

There is no change to set up DNS forward or something like that. 



Thank you for answer.

---

Šerý