The following alert is logged within the mailbox record for a Dynamics 365 mailbox:
"An unknown error occurred while receiving email through the mailbox "Your mailbox is now connected to Dynamics 365". The owner of the associated email server profile [Mailbox Name] has been notified. The system will try to receive email again later.
Email Server Error Code: Exchange server returned UnknownIncomingEmailIntegrationError -2147209462 exception."
This error is logged if the corresponding Queue record in Dynamics 365 is owned by a team that does not have any security roles assigned.
- Within the mailbox record in Dynamics 365, click the value in the Regarding lookup to open the corresponding Queue record.
- Verify the Owner of this Queue record has a security role assigned.
- You can do this by clicking on the value in the Owner field to open the owner record.
- Click the Manage Roles button and assign a security role with sufficient access.