[vc_row][vc_column][vc_column_text]One question that always comes up during On-Prem to Exchange Online is how to handle shared mailboxes in a hybrid environment. In EXO, when you convert a regular mailbox to a shared mailbox, that change will not write back to the on-prem environment. The hybrid server will still see the mailbox as a regular mailbox.
After you convert the regular mailbox to shared, you must edit the attributes of the on-premises object in Active Directory Users & computers. There are 2 settings you must edit; msExchRecipientTypeDetails & msExchangeRemoteRecipientType.
The 2 attributes need the following values
- msExchRemoteRecipientType: 100
- msExchRecipientTypeDetails: 34359738368
After you make these changes, you can remove the Office 365 License.[/vc_column_text][/vc_column][/vc_row]