I have that policy/gpo in place and it doesn't effect OSTs at all. PS, Caching rocks :)
________________________________ From: Brown, Larry [mailto:larry.br...@dplinc.com] Sent: Monday, March 23, 2009 9:14 AM To: MS-Exchange Admin Issues Subject: OST's & PST's Exchange 2007 CCR, Outlook 2003 (until later this year...I hope) We are in the process of getting rid of PST's. Phase one will be disabling the creation of New PST's, disabling Archiving AND not allowing email to be added to existing PST's. Using Outlook11.adm in Policies I can gray out the ability to create new PST's, disable Archiving and I can set the maximum size for existing PST's to 1 Meg, which effectively keeps users from adding emails to their PST's. However, this also affects OST files. Since we are using Caching to allow users the ability to use Junk E-mail, this solution isn't acceptable. (And yes, I don't like Caching...not my choice!) Is there a way to lock down adding email to existing PST's without also locking down the OST files? Have I missed something in my research? Larry C. Brown LAN/WAN CS Support Dayton Power & Light (937)-331-4922 ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~