F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE Administrator's Manual page 150

150
Free space threshold
Max number of
concurrent
transactions
Max scan timeout
Number of spam
scanner instances
Set the free space threshold of the working
directory. F-Secure Content Scanner Server
sends an alert to the administrator when the
drive has less than the specified amount of
space left.
Specify how many files F-Secure Content
Scanner Server should process simultaneously.
Specify how long a scan task can be carried out
before it is automatically cancelled.
Specify the number of Spam Scanner instances
to be created and used for spam analysis. As
one instance of the spam scanner is capable of
processing one mail message at a time, this
setting defines how many messages will
undergo spam analysis simultaneously. The
default value is 3.
You might need to modify this setting if you
enable Realtime Blackhole Lists (DNSBL/ RBL)
for spam filtering.
The server must be restarted after this setting
has been changed.
IMPORTANT: Spam analysis is a
processor-intensive operation and each spam
scanner instance takes approximately 25MB of
memory (process fsavsd.exe). Do not increase
the number of instances unless the product is
running on a powerful computer.