Hi, Another migration question: can I safely assume that the final mailbox sizes (store sizes) will be about the same on the new Exchange 2003 that I had on the old Exchange 2000, assuming I am migrating all content and not adding any new content for now? Is there any reason the store size on the new Exch2003 will be larger than the old store size on the old Exchange 2000? The current store size is around 10GB on the old Exchange 2000 server and I would hate to find that the new store size now wants to be 18GB for the same data on the new Exchange 2003 server! (especially since there is a 16GB limit). Mike