Schedule an on-demand scan task to find or remove viruses and banned content in mailboxes, at convenient time intervals.
Make sure that you do not remove the MSMEODuser from active directory, that was created during the product installation. This user is required for performing on-demand scans on mailboxes.
Note
Enable Stop task after it has run for <n> hour(s) <n> minute(s), to stop an on-demand scan task if it exceeds the specified hours.
Click → . The On-Demand Scans page appears.
Click New Scan. The Choose when to scan page appears.
From Choose a time tab, specify when you want the scan to run. The available options are:
Not scheduled — Select this if you have not decided on when to perform the on-demand scan or disable the schedule for an existing on-demand scan.
Once — Specify the date and time to schedule an on-demand scan once.
Hours — Select this to schedule the task based on hours, if you have to execute the on-demand scan task for more than once in a day. For example, let's consider that the current time is 14:00 hours and you have to create an on-demand scan task that satisfies these conditions:
The on-demand scan must start exactly at 14:30 hours
The on-demand scan must occur twice a day
To achieve this, specify
12for hours and30for minutes.Days — Select this to schedule the task based on how often the scan must occur in a week. For example, if you want the on-demand scan to occur once in three days, specify
3under day(s) and select the time when the task starts.Number of Weeks — Select this to view the items scanned for the past n number of weeks. For example, to view the files scanned by the on-demand scan for the last 8 weeks, type
8under Number of Weeks.Number of Months — Select this to view the items scanned for the past n number of months. For example, to view the files scanned by the on-demand scan for the last 4 months, type
4under Number of months.
Click Next. The Choose what to scan page appears. The available options are:
Scan all folders — Select this to scan all the mailboxes in the Exchange server.
Scan selected folders — Select this to scan only specific mailboxes in the Exchange server.
- Scan all except selected folders — Select this to scan all except specific mailboxes that are added to the Folders to scan list.
Note
In Microsoft Exchange SE, 2016, and 2019, the public folder appears as part of the mailbox and on-demand scanning is always recursive for public folders.
Click Next. The Configure scan settings page appears.
From the Policy to use drop-down list, select any of the policy option based on your scan requirement.
The settings and actions to take are specified in on-demand policies found under Policy Manager.
Select the Resumable Scanning and Restart from last item options to run the on-demand scan task in multiple sessions on mailbox database.
Tip
Sometimes, you might want to run an on-demand scan task for all mailboxes. Scanning all mailboxes in one session might take longer time and that can affect the system's productivity. Instead of scanning all mailboxes in one session, you can schedule the scan for multiple sessions.
On Exchange Server, you now have the option to perform a granular on-demand scan task. You can narrow down the scan using these fields:
Option
Definition
Subject contains
From contains
To contains
Message ID
Recipients contains
Items received
Select this option to scan items for a specific period.
Number of weeks: Select the number of weeks to perform scan.
Number of Months: Select the number of months to perform scan.
From: Select the starting date for which you want to perform scan.
To: Select the date to which you want to perform scan.
Continuity scan
Scans items for the past one year using any of these filters.
Scan for past weeks
Scan for past months
Scan for past days
Mail Size
Used this to scan items based on file size. From: Select the minimum size of files.
To: Select the maximum size of files.
Items with attachment
Unread items
Performing a granular on-demand scan saves you time and fetches specific scan results.
Click Next. The Enter a name for the scan page appears.
Specify a meaningful on-demand scan task name, based on the policy you selected in the previous page. For example, if you are creating an on-demand scan task to do a full scan over the weekend, specify the task name as
Weekend Full Scan.Click Finish, then Apply.
By performing these steps, you have successfully created an on-demand scan task.