I have an issue with a network that users Windows SBS 2008. They used to use Exchange locally, but they recently moved to Hosted exchange from another provider.
The main issue is that connected PC's and Mac's still often revert back to trying to use the local server.
To give the problems some context lets say the domain is called:
In this case also on the SBS server, the domain is also called example.com (rather then say example.local as used to be recommended).
Some specific issues are that when you look on Outlook 2010 under "File", and then under "Account Settings" this normally shows the web URL to get web access to your email.
On this network on computer connected to the domain, they tend to show the old server rather then the new hosted exchange URL.
Also more annoyingly, if a user has been set to have access to another users mailbox, when they close and open Outlook, they have to add that users mailbox again.
Occasionally it request the user enters a password, because it has attempted to connect to the local mailbox rather then the remote one.
Also the Apple Mac's on this network cannot connect to hosted exchange unless their DNS is manually set to Google DNS (or some other external provider).
Before we implemented a conditional forwarder, we were unable to ping autodiscover.example.com. It would not give any results. Once we put a conditional forwarder in we were able to fix this
The auto discover record (i.e. autodiscover.example.com) has been setup as required (which is a cname for a record such as autodiscover.hostedexchangeprovider.com) by hosted exchange provider and outside the SBS network all works fine. There is only issues with computers connected to the domain.
Actions we have taken so far are
• Disable Outlook webaccess on the local server - this helped.
• Implemented a Conditional forwarder on the network so that autodiscover.hostedexchangeprovider.com uses Google DNS. - this helped improve things a lot - but not perfect.
A complex problem for a good expert. Any help appreciated.