ZyXEL Communications 5 Series - Manual (Page 292)

ZyWALL 5/35/70 Series User’s Guide
292 Chapter 15 Anti-Spam
15.3 Anti-Spam External DB Screen
Click 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
Chapter 5 on page 123 for details).
Figure 151 SECURITY > ANTI-SPAM > External DB
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 ZyWALL. Use this section to configure what the
ZyWALL 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 ZyWALL allow the excess e-mail sessions
without any spam filtering.
Select Block to have the ZyWALL 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 ZyWALL.
Reset Click Reset to begin configuring this screen afresh.
Table 84 SECURITY > ANTI-SPAM > General
LABEL DESCRIPTION