InterScanTM Messaging Security Virtual Appliance - Online Help ...

Trend Micro InterScan Messaging Security Virtual Appliance Administrator’s Guide
8-18
TABLE 8-2. IMSVA Recommended Settings When Using Cloud Pre-Filter
SECURITY SERVICE RECOMMENDED ACTION
Spam Prevention
Solution (SPS)
Trend Micro Antivirus
and Content Filter
IMSVA should always use SPS, which means antispam
policies should still be created.
Cloud Pre-Filter uses a very conservative approach
to detect spam. Cloud Pre-Filter does this to lower
the risk that a legitimate email message is detected
as spam.
Using antispam policies on IMSVA will further reduce
the spam reaching your email recipients.
IMSVA should always use the Antivirus and Content
Filter, which means antivirus policies and
content filtering policies should still be created.
Cloud Pre-Filter does not support content filtering of
email messages. Content filtering policies must be
created in IMSVA.
Also, even though Cloud Pre-Filter does filter for
viruses, Trend Micro recommends creating antivirus
policies.
DKIM Cloud Pre-Filter has no impact on DKIM.
Configure and use this feature as your network
requires.