Exmerge doesn't support Unicode PSTs, therefore you are limited to about 1.8 GB. Why wouldn't you use the Exchange Migration Wizard? From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Jeffrey Moscone Sent: Friday, January 19, 2007 1:19 AM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Information Store Move Greetings, There is a situation where a Microsoft Windows 2003/Exchange 2003 domain is going to be decommissioned and a new domain is going to be rolled out. Would you say that the best possible way to get an information store from one domain to another (non connect/trusted) domain is to utilize the powers of Exmerge? Also, there are several mailboxes over 4GB's; does anyone see any show stoppers with that? Thanks! Jeff