We are using cached Exchange 2007 with Outlook 2007 on Vista Ultimate.
I have a large mailbox that is used by 5 users simultaneously on 5 different computers for customer support. They all use the same domain login which is tied to the mailbox.
One computer is getting the 'mailbox full' prompt. The other 4 do not get that prompt.
There is NO quota set for this mailbox on exchange.
I have deleted the profile and created a new one on the computer that is getting this prompt.
The prompt still occurs.