ZyXEL Communications VPN Series Handbook page 584

How to Configure an Email Security Policy with Mail Scan
and DNSBL
This is an example of using ATP Series' UTM Profile to mark or discard
spam (unsolicited commercial or junk e-mail). Use the Email Security
white list to identify legitimate e-mail. Use the Email Security black list
to identify spam e-mail. The ATP Series can also check e-mail against
a DNS Black List (DNSBL) of IP addresses of servers that are suspected
of being used by spammers.
ATP Series with Email Security Profile to mark or discard spam e-mail
Example
Figure 1 Using Email Security to Detect Spam
Note: All network IP addresses and subnet masks are used as examples in this article.
Please replace them with your actual network IP addresses and subnet masks. This example
was tested using ATP200 (Firmware Version: ZLD 4.32).
et Up the Email Security on ATP Series
S
In the ATP Series, go to CONFIGURATION > Security Service> Email Security; Enable
this feature on General Settings page. Select Check IP Reputation (SMTP only) to
have the ATP Series scan for spam e-mail by IP Reputation. Select Check Mail
Content to identify Spam Email by content, such as malicious content. Select
Check Virus Outbreak to scan viruses attached in emails. On advance section,
leave Query Timeout Settings to be the default settings.
Select from the list of available Scan Options and desired Log type whether to have
the ATP Series generate a log (log), log and alert (log alert) or neither (no) by
default when traffic matches this policy. Click Apply to save the configuration
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