ZyXEL Communications 1000 Manual De Usuario

 Chapter 38 Anti-Spam

ZyWALL USG 1000 User’s Guide

In the anti-spam Black List or White List screen, click the Add icon or an Edit 
icon to display the following screen. 

Use this screen to configure an anti-spam black list entry to identify spam e-mail. 
You can create entries based on specific subject text, or the sender’s or relay’s IP 
address or e-mail address. You can also create entries that check for particular 
header fields and values. 

Figure 443   Configuration > Anti-X > Anti-Spam > Black/White List > Black List (or 

White List) > Add 

The following table describes the labels in this screen.   

Table 175   Configuration > Anti-X > Anti-Spam > Black/White List > Black List  (or 
White List) > Add

Enable Rule

Select this to have the ZyWALL use this entry as part of the black or 
white list. 

To actually use the entry, you must also turn on the use of the list in the 
corresponding list screen, enable the anti-spam feature in the anti-spam 
general screen, and configure an anti-spam policy to use the list.

Type

Use this field to base the entry on the e-mail’s subject, source or relay 
IP address, source e-mail address, or header. 

Select Subject to have the ZyWALL check e-mail for specific content in 
the subject line.

Select IP Address to have the ZyWALL check e-mail for a specific 
source or relay IP address.

Select E-Mail Address to have the ZyWALL check e-mail for a specific 
source e-mail address or domain name.

Select Mail Header to have the ZyWALL check e-mail for specific 
header fields and values. Configure black list header entries to check for 
e-mail from bulk mail programs or with content commonly used in 
spam. Configure white list header entries to allow certain header values 
that identify the e-mail as being from a trusted source. 

Mail Subject 
Keyword

This field displays when you select the Subject type. Enter up to 63 
ASCII characters of text to check for in e-mail headers. Spaces are not 
allowed, although you could substitute a question mark (?). See 

 for more details.