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AdekunleDeen-3283 asked AdekunleDeen-3283 answered

O365 Mailbox Migration

Can I migrate Mailboxes from a Dial-Tone Database to O365 exchange Online.

office-exchange-server-administrationoffice-exchange-online-itprooffice-exchange-hybrid-itpro
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KyleXu-MSFT answered KyleXu-MSFT commented

@AdekunleDeen-3283

The Dial tone database is a temporary database for Exchange server, you need to follow this article below to merge dial tone database into a restored database. Then this mailboxes will be a full function mailboxes.

After that, you can migrate mailboxes from Exchange on-premises to Exchange online in many ways: such as hybrid migration, cutover migration.

For more detailed information, you can have a look about those articles:
Ways to migrate multiple email accounts to Microsoft 365 or Office 365
Perform a dial tone recovery


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@AdekunleDeen-3283
I am writing here to confirm with you any update about this thread now?
If the above suggestion helps, please be free to mark it as an answer for helping more people.

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AdekunleDeen-3283 answered

Thank you. it was helpful.
I plan to move the mailboxes from the dailtone DB to a new Database because the old Database could be recovered. I had to use a 3rd party tool which automatically restores the mailboxes into the dialtone DB.

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