Outlook slow updating cached messages
An often misunderstood feature of Exchange Server 2010 is the Client Access server array, or CAS array.
If you want to turn off Cached Exchange Mode, repeat the steps, but clear Use Cached Exchange Mode.To give you some background, We are currently using Exchange 2003 Enterprise with a front end server.Our user is located in the UK and he connects to our servers in Virginia either by VPN or via RPC. When he first opens Outlook, the message 'Updating Folder" remains for 10-15 minutes before the first email shows up in his inbox.Apparently, when he's using the same ISP, the problem goes away.I was able to reproduce this problem using a clean install of Windows 7/Office 2010 on a different laptop with a Verizon mifi to test outside our ISP.We tried recreating the file, but this didn't help.
When cached mode is disabled, he immediately receives his emails.
Cached Exchange Mode enables a better experience when you use an Exchange account.
In this mode, a copy of your mailbox is saved on your computer.
The final step is to configure the mailbox databases with the correct RPCClient Access Server attribute.
It is this attribute that Outlook looks up to determine which RPC Client Access Server to connect to for a given mailbox.
This service allows Outlook clients to connect via MAPI/RPC to the Client Access server for mailbox access, however they do still connect directly to mailbox servers for public folder access.