So at last RIM confirm they have a problem! .. Rumour control has the fix scheduled for BES 5.0 … god knows when that will hit the streets!.
So esentially you when you migrate a Blackberry user to Exchange 2007 they shouldn’t set an OoO from the BES device!?
BlackBerry® Enterprise Server software version 4.1 Service Pack 4 (4.1.4) for Microsoft® Exchange
Microsoft® Exchange 2007
BlackBerry smartphone users with a Microsoft Exchange 2007 mailbox are unable to update Out Of Office text from their BlackBerry smartphones.
Microsoft Exchange 2007 provides the ability to set Out Of Office text for internal and external email messages. When internal Out Of Office text is set in Microsoft® Outlook® 2007, the Out Of Office text is updated on the BlackBerry smartphone. When setting or updating Out Of Office text on the BlackBerry smartphone, the internal Out Of Office text in Microsoft Outlook 2007 is not updated.
This is a previously reported issue that has been escalated internally to our development team. No resolution time frame is currently available.
Set or update Out Of Office text in Microsoft Outlook 2007 or using Microsoft® Outlook® Web Access 2007.