Adding replacement EX16 server and moving users

jeff mcnabney 301 Reputation points
2021-03-16T15:25:32.237+00:00

Existing EX16 CU9. Added second EX16 CU19 server to replace EX16 CU9 (currently offline) on same subnet and same AD. New CU19 is mostly configured for operation. How do i port users from old CU9 server to cu19 server. Am i to understand that i cant do a mailbox move? It seems that the CU9 server is the primary and mail is flowing through it. Sending from a test mailbox on CU19 gets stuck in the queue even though the send connectors are active and i can ping the destination relay. I've seen it suggested to create a DAG (which i have never had to do before) and seed the databases, and then make the new server the primary. I have no idea if this will work. Under the gun here to get mail back online asap.

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. Andy David - MVP 145.1K Reputation points MVP
    2021-03-16T17:34:45.763+00:00

    Yes I have experience with that and know Jaap personally. :)
    You can trust his procedures and you can use that technique and rebuild the CU9 server - then restore from backup

    1 person found this answer helpful.

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