Forum Discussion
On-prem shared mailbox access
We're migrating from on-prem to MS365 and working on test users.
First issue we are looking for is shared access mailboxes.
How can the users maintain access to shared mailbox even if his mailbox and the shared one are on different platform?
When we moved the user's mailbox online, and the shared mailbox still on-prem, he loses access to it.
Thanks
Cross-premises shared mailbox access is supported but some scenarios require additional configuration as detailed here: https://learn.microsoft.com/en-us/exchange/permissions#mailbox-permissions-in-hybrid-environments
Auto-mapping (having the mailbox automatically appear in Outlook) is not supported though, you have to manually add it.
