Hello, We currently are running Exchange 2003 on Windows Server 2003 R2. We want to start enforcing a quota on mailbox sizes to 2 GB but are curious if Microsoft will support quotas over 2GB. Does anybody know what the largest mailbox size is that microsoft supports? We would like to maybe increase the quota for a few users to 3GB or 4 GB but want to make sure we are supported first. Any information would be helpful, thank you in advance!

There is no limit that I'm aware of. But you might want to educate your users that performance will suffer if they have any folders with lots of items, say more than 5,000 items.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi, In addition to Ed’s reply, here is more information, Thinking about Mailbox and Message Size Limits. http://msexchangeteam.com/archive/2006/07/06/428213.aspx Best regards, SerenaPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.