F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 6.62 - Administrator's Manual - page 31
of
397
CHAPTER 2
31
Deployment
A Note about Installing on Active-Passive Cluster
The product can be installed either on an active or a passive cluster node.
When installing on a passive node (which does not have active Microsoft
Exchange services), the setup program may display a notification about
missing Microsoft Exchange components, but the installation can be
continued.