Product manual

GFI MailEssentials 6 Email Security | 90
Screenshot 45: VSAPI Settings
3. (Optional) Select Enable background scanning to run Information Store Scanning in the
background.
WARNING
Background scanning causes all the contents of the Information Store to be scanned.
This can result in a high processing load on the Microsoft
®
Exchange server depending on
the amount of items stored in the Information Store. It is recommended to enable this
option only during periods of low server activity such as during the night.
4. Select a VSAPI scan method:
Scan
Method
Description
On-
access
scanning
New items in the Information Store are scanned as soon as they are accessed by the email client. This
introduces a short delay before the email client displays the contents of a new message.
Pro-
active
scanning
New items added to the Information Store are added to a queue for scanning. This is the default and
recommended mode of operation, since in general the delay associated with on-access scanning is avoided.
NOTE
In the event that an email client tries to access an item that is still in the queue, it will be allocated a
higher scanning priority so that it is scanned immediately.