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## Manual and Scheduled Scan Settings

A brief description of the options is available below.

#### Manual and Scheduled Scan Settings

Section | Settings
--- | ---
Schedule
| ##### Note Only available for Scheduled Scans.
| Scan every: Day: Select to perform a scan every day at a specific time. Week on: Select to perform a scan every week on a specific day and time. Month on day: Select to perform a scan every month on a specific date and time.
Database Selection | All databases: Select this to scan all databases including any databases you add after this setting is configured. Specific databases: Select this to scan databases you specify. Refresh: Click to display the latest Mailbox databases.
Scan Type Selection | Security risk scan: Select this to scan for viruses/malware and advanced threats, based on the configured settings. Attachment blocking: Select this to perform a scan based on the attachment blocking settings. Content filtering: Select this to perform a scan based on the content filtering settings. Data Loss Prevention: Select this to perform a scan based on the Data Loss Prevention settings.
Incremental Scan Options: Selecting multiple check boxes creates "AND" relationships between those check boxes.
| ##### Note These features are only available with Exchange Server 2010 and 2007.
| ##### Note If all check boxes are clear, all messages in the database(s) you specify are scanned.
Scan messages delivered: Select this to scan messages delivered during a time period. Scan messages with attachments: Select this to only scan messages with attachments. Scan messages that have not been scanned: Select this to only scan messages that have not been previously scanned by ScanMail.
| ##### Note When you use ScanMail with Exchange Server 2010 and 2007, Manual Scan is only available for clustered Mailbox servers, Combo Servers (Hub Transport and Mailbox server roles), and Mailbox server roles.
CPU Usage: This feature allows you to manage performance by limiting the resources that manual and scheduled scans use. | Enable CPU usage limitation: Select to limit CPU usage and specify the maximum CPU percentage used.