So the limit on our Exchange 2003 server is currently set to 2GB....but from what I've researched, Outlook 2010 ost can go upwards of 75GB. Can I simply go thru the configuration on the 2003 Exchange server, make the mailbox limit to say 10 GB and have happy Outlook 2010 ost users? Only a handful of users would like this, so I was going to set the higher limit specifically on those users only (that is, clearing the check box 'Use mailbox store defaults')....and keep the default on the Exchange 2003 mailbox limit to 2GB.

Thanks