Auto-Protect scans

When Auto-Protect is enabled, it runs constantly and detects threats and violations in real-time to everything that is on or passes through your Exchange server. Auto-Protect scanning applies to all policies, except for antispam detection. Antispam scanning occurs continuously, in real-time as email traffic flows through your Exchange server.

See Configuring Auto-Protect scanning

Manual scans

Manual scans run on-demand and scan public folders and mailboxes. All policies apply to manual scans, except antispam. Antispam scanning continuously occurs in real-time as email traffic flows through your Exchange server.

You can specify which file folders and mailboxes to scan during a manual scan. You can also specify the content filtering rules that you want to enable for the manual scan.

See About manual scans

Scheduled scans

Scheduled scans run unattended, usually at off-peak periods. All policies apply to scheduled scans, except antispam. Antispam scanning continuously occurs in real-time as email traffic flows through your Exchange server.

You can specify which file folders and mailboxes to scan during a scheduled scan. You can also specify the content filtering rules that you want to enable for the scheduled scan.

See About scheduling a scan

Background scanning

Background scanning is a scan of the message store. You can perform scans of the message store during off-peak periods to enhance performance.

See Configuring background scanning