JamesR - 9:44 pm on Feb 11, 2004 (gmt 0)
IF this is a different domain altogether (not just moving the same domain to another server), you can set them up with email addresses on the new domain and just forward the old ones. Then, send your clients the required login info for the new addresses. They will want to notify everyone of the change. You may want to leave the old addy's up for a month and make sure the client contacts anyone using the old addresses.