ZyXEL Communications ZLD User Manual
ZyWALL (ZLD) CLI Reference Guide
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H A P T E R
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Anti-Spam
This chapter introduces and shows you how to configure the anti-spam scanner.
24.1 Anti-Spam Overview
The anti-spam feature marks or discards spam. Activate the anti-spam subscription service for
sender IP reputation checking, mail content analysis, and virus outbreak detection. Use the white
list to identify legitimate e-mail. Use the black list to identify spam e-mail. You can also check e-
mail against a DNS black list (DNSBL) of IP addresses of servers suspected of being used by
spammers.
sender IP reputation checking, mail content analysis, and virus outbreak detection. Use the white
list to identify legitimate e-mail. Use the black list to identify spam e-mail. You can also check e-
mail against a DNS black list (DNSBL) of IP addresses of servers suspected of being used by
spammers.
24.2 Anti-Spam Commands
The following table identifies the values used in some of these commands. Other input values are
discussed with the corresponding commands.
discussed with the corresponding commands.
24.2.1 General Anti-Spam Commands
The following table describes general anti-spam commands. You must use the
configure
terminal
command to enter the configuration mode before you can use these commands.
Table 116
Input Values for General Anti-Spam Commands
LABEL
DESCRIPTION
rule_number
The index number of an anti-spam rule. 1 - X where X is the highest number of anti-spam
rules the ZyWALL model supports. See the ZyWALL’s User’s Guide for details.
rules the ZyWALL model supports. See the ZyWALL’s User’s Guide for details.
zone_object
The name of the zone. The ZyWALL USG 200 and lower models use pre-defined zone names
like DMZ, LAN1, SSL VPN, WLAN, IPSec VPN, OPT, and WAN.
like DMZ, LAN1, SSL VPN, WLAN, IPSec VPN, OPT, and WAN.
xheader-name
The name (part that comes before the colon) of a field to add to an e-mail header. Use up to
16 ASCII characters.
16 ASCII characters.
xheader-value
The value (part that comes after the colon) of a field to add to an e-mail header. Use up to
16 ASCII characters.
16 ASCII characters.
Table 117
General Anti-Spam Commands
COMMAND
DESCRIPTION
[no] anti-spam activate
Enables or disables anti-spam service.
show anti-spam activation
Displays anti-spam service status.