I believe you are correct about the trust, there is no way to directly migrate (mailbox to mailbox via exchange) without one AD being able to talk to and trust the other.
There is however a pretty workable solution via the Microsoft Transporter Suite for Internet Mail. Using this you can copy mail from one IMAP/POP server (your old exchange) to your exchange 2007 system. It works very well, we recently used it to migrate our users from our old unix mail system to MS exchange 2007. Download: http://www.microsoft.com/downloads/details.aspx?FamilyID=35fc4205-792b-4306-8e4b-0de9cce72172&DisplayLang=en Release Notes: http://www.microsoft.com/downloads/details.aspx?FamilyID=362db2ca-b254-4301-b506-749f90ad8669&DisplayLang=en If you need any further info on it let me know, I have some experience using it. Ehren J. Benson, MCSE Windows Systems Administrator [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]> 517-884-5469 From: James Rankin [mailto:[EMAIL PROTECTED] Sent: Friday, June 27, 2008 3:22 AM To: MS-Exchange Admin Issues Subject: Exchange migration Just wondering if anyone could point me in the right direction as to how to attack this Exchange issue I have, I am not really an Exchange admin at any level, but unfortunately everyone else at my current employer knows even less than me :-( We are in the process of migrating away from a very messy old Active Directory and Exchange infrastructure, well maybe migrate is the wrong word, they are building a completely new Active Directory from scratch. However they want to bring across all the Exchange 2007 mailboxes and attach them to completely new AD accounts, just with the same username. I am of the opinion that they can't do anything like this without putting a trust in between the old and new Active Directory domains, and they'd probably need to run the ADMT on some level (unless everything is migrated to PSTs, which I don't think is a good option either). They are adamant they don't want a trust putting in as they are paranoid about the crap in their old AD which gives them so many issues making its way into the new one, and no amount of assurance seems to get rid of this attitude. The source is AD 2003 with Exchange 2007, and so is the target, so that makes it a bit simpler, the only real difference is their entire new infrastructure is virtualised on ESX 3.5 Can anyone tell me (just briefly) what would be the best way to attack this, bearing in mind I am not really an Exchange guy, or even point me in the direction of some helpful links? I am going to have a dig around myself but I thought I'd try some of the Exchange gurus first (and the football is on soon) :-) TIA, JRR ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
