whenz

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Hi Jamie,<br />
<br />
Thank you for the input. &nbsp;We have to re-create those accounts because of the following reason:<br />
<br />
Until now the AD accounts were created manually by the helpdesk team. &nbsp;We are going to introduce an Identity Management system where all the user accounts gets created new using the IDM. &nbsp;I know it sounds crazy as we have to re-create all from scratch (ntfs permission, application permissions etc). &nbsp;But that's what the management wants.<br />
<br />
I will have a look into the link you sent me, thank you for the input!
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The picture resembles a cross forest migration of AD account and mailboxes. But here you are not migrating the existing AD account using ADMT tool, but you are creating altogether new AD account which has a new SID. <br />
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So in this case how can you migrate the existing mailbox which was attached to the old existing AD account. <br />
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You will have to take out PST from old mailboxes, create new mailboxes for the new AD accounts and then import PST from old mailbox.<br />
<br />
I think this is what needs to be done.
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please find the scenario in the attached picture.<br />
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Question: &nbsp;How do I ensure that Andy Meyer gets a new AD Account in the new domain with keeping his existing Exchange Mailbox?<br />
<a href="https://filedb.experts-exchange.com/incoming/2018/11_w45/1400570/Exchange-Migration-Roadmap-bas.com.gif" target="_blank" class="file-inline" title="scenario (24 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Exchange-Migration-Roadmap-bas.com.gif</a>
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Exchange-Migration-Roadmap-bas.com.gif

please find the scenario in the attached picture.

Question:  How do I ensure that Andy Meyer gets a new AD Account in the new domain with keeping his existing Exchange Mailbox?

Exchange - How to convert a linked Mailbox to a User Mailbox in a migration scenario

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.