Hi, I have some users with rather large mailboxes, ranging in size from 2GB to 6GB in some cases. This is on Exchange 2003 Enterprise. What kinds of issues should I be aware of when dealing with large mailboxes? Are there any limits to mailbox or PST size (other than store limits) ? What process would you recommend for importing a 6GB mailbox? The user's mailbox is in Outlook. the file is too big to cut to a DVD naturally. Best regards Mike