ZyXEL Communications ZYWALL USG 2000 Support Notes page 176

finishing the DNSBL domain list.
In the following figure, we can see that the anti-spam function is working.
3.3.3 Using Black/White list (B/W list)
First, we can edit our owned black list and/or white list. Generally speaking, one way of
making black list is to edit the address of email server that you do not trust. Additionally,
ZyWALL USG also provide other options to filter the spam mails based on subject, source IP
address of relay email servers, email address and mail header. In contrast, you can edit the
white list based on the information of email subject, source IP address of relay email servers,
email address.
3.3.3.1 Configuration procedure
Enabling Anti-Spam
Add Policy
Editing Black/White List
Click Apply button to apply it
Test result: the subject of email has been tagged
All contents copyright (c) 2008 ZyXEL Communications Corporation.
ZyWALL USG 2000 Support Notes
176