Mailbox is not visible in Exchange Online

Question

After creating a user, I want to create a mailbox that is visible both on-premises and in Exchange Online (remote mailbox). The presence in on-premises Exchange is required for a specific application being developed. I read that Adaxes handles this automatically. However, after the user is created, the mailbox appears in Exchange on-premises but cannot be found in Exchange Online. When I check the user properties in Office 365, under the mail section, I see the message: ‘This user’s on-premises mailbox hasn’t been migrated to Exchange Online. The Exchange Online mailbox will be available after migration is completed.

The groups the user is being added to are license groups.

Answer 1

Hello,

The behavior you are facing is expected as the Create Exchange mailbox action is not the one to be used. With your current workflow, you will end up with users having two separate mailboxes – one in Exchange Online and the other in Exchange on-premises. To achieve the desired, you need to enable a remote mailbox in the business rule and then wait for the synchronization to complete (this will create a mailbox in Exchange Online based on group membership). To enable a remote mailbox, replace the Create Exchange mailbox action in your business rule with the Regular remote mailbox script from the following article: https://www.adaxes.com/script-repository/create-remote-mailbox-s256.htm.