ZyXEL Communications vantage cnm ユーザーズマニュアル

 Chapter 6 Device Security Settings

Vantage CNM User’s Guide

Click Device Operation > Device Configuration > Security > Anti-Spam > External DB to 
display the Anti-Spam External DB screen.

Use this screen to enable or disable the use of the anti-spam external database. You can also 
configure the spam threshold and what to do when no valid spam score is received. You must 
register for this service before you can use it (see the chapter on registration for details). 

Figure 67   Device Operation > Device Configuration > Security > Anti-Spam > External DB

Discard SMTP mail. 
Forward POP3 mail 
with tag in mail subject

Select this radio button to have the device discard spam SMTP e-mail. The 
device will still forward spam POP3 e-mail with the tag that you define.

Action taken when mail 
sessions threshold is 
reached

The anti-spam feature limits the number of concurrent e-mail sessions. An e-
mail session is when an e-mail client and e-mail server (or two e-mail 
servers) connect through the device. Use this section to configure what the 
device does when the number of concurrent e-mail sessions goes over the 
threshold (see the appendix of product specifications for the threshold).
Select Forward to have the device allow the excess e-mail sessions without 
any spam filtering.
Select Block to have the device drop mail connections to stop the excess e-
mail sessions. The e-mail client or server will have to attempt to send or 
receive e-mail later when the number of e-mail sessions is under the 
threshold.

Apply

Click Apply to save your changes back to the device.

Reset

Click Reset to begin configuring this screen afresh.

Table 55   Device Operation > Device Configuration > Security > Anti-Spam > General