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brad96's avatar
brad96
Copper Contributor
Jan 06, 2026

Linking cloud only shared mailbox with onpremise object

Hi all,

 

We currently have a cloud only shared mailbox in exchange online that we need to exist in onprem exchange for a smtp relay that is setup in a hybrid config. 

 

Is it possible to create onprem and match these objects onprem/cloud - or will the mailbox need to be recreated onprem and then it will sync to cloud

2016
exchange online
Exchange Server
hybrid
office 365

1 Reply

  • VasilMichev's avatar
    VasilMichev
    MVP
    Jan 07, 2026

    Create an user account on-premises, match it against the cloud one, then use Enable-RemoteMailbox against it and you should be fine. 

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