Hi All Right some back ground I have an exisiting I have installed a 2nd CAS server in View of Migrating from Physical to Virtual Machine Everything seems to be working ok on the New CAS IE, the OAB generation completes ok and the files in the OAB folder on the Exchnage server are reading the latest date. My problem is that I have created a DG but the clients do not have this DG in there outlook, if I open a mail message and type ret and hit ctrl K nothing returned when I would expect to see the name and address of the DG. If i log on to the WEB mail and do the same then the DG is found fine If i click to download the address book it says connecting to Exchange then says that it is complete but no entry, there are no entries in the event log on either Exchnage or the Client and no issues in the Sync folder Also if i hold control and right click on the Outlook icon and test auto config, it read both the old CAS and the new CAS and changes, how can i stop the old CAS turning up here as this may be the problem. Thanks in advance

ok an update to this i restarted the file distribution service on the CAs and now it seems to be working ok but i am a little concerned about having to restart this service regularly has anyone else seen this issue? can I schedule a download from the MBX server to the CAS?

Hi JohnNMason, By default, OAB generation for Web-based distribution runs every eight hours. To immediately update the OAB for Web-based distribution, follow these steps: Start the services Microsoft Management Console (MMC) snap-in on the server that runs the Exchange 2007 Client Access server role. To do this, click Start, click Run, type services.msc, and then click OK. In the services list, right-click Microsoft Exchange file distribution, and then click Restart. Regards! GavinPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

You don't have restart the service all the time. You can check application if you see any event FDS serviceGulab | MCTS-MCITP Messaging: 2010 | MCTS-MCITP Messaging: 2007 | MCC 2011 | Skype: Gulab.Mallah