We recently migrated our organization to Office 2007 (from 2003), And we're having a recurring issue with a few of our users.
Those users use PST files as he default data files, the messages are received directly to the Inbox folder inside their PST file. Thing is - it seems the exchange server won't recognize that those messages were already received, and they keep coming over and over again, until there are tens of copies..
The workaround we are currently using is setting he OST as the default data file, and creating a client rule to transfer incoming messages to the PST inbox.
We are using Outlook 2007 SP2 with Exchange server 2003.
I googled it for a while and could find only one other similar case, with no solution.
I would appreciate any help.