Office 365 mailbox scan

ESET Mail Security provides scanning functionality for Office 365 hybrid environments. It is available and visible in ESET Mail Security only if you have hybrid Exchange environment (on-premise and cloud). Both routing scenarios are supported, through Exchange Online or through on-premises organization. For more details see Transport routing in Exchange hybrid deployments exlink.

You can scan Office 365 remote mailboxes and Public folders the same way you would with traditional On-demand mailbox database scan.


Running a full email database scan in a large environments can result in undesired system loads. To avoid this issue, run a scan on specific databases or mailboxes. To further minimize system impact, use the time filter at the top of the window. For example, instead of using Scan all messages, you can select Scan messages modified within last week.

We recommend that you configure Office 365 account. Press F5 key and navigate to Server > On-demand mailbox database scan. Also, see Database scan account details.

To see the activity of Office 365 mailbox scan, check Log files > Mailbox database scan.