ZyXEL Communications ZyWALL 35 Series, User Manual

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Chapter 15 Anti-Spam
ZyWALL 5/35/70 Series User’s Guide
315
15.4 Anti-Spam Lists Screen
Click SECURITY > ANTI-SPAM > Lists to display the Anti-Spam Lists screen.
Configure the whitelist to identify legitimate e-mail. Configure the blacklist to identify spam
e-mail. You can create whitelist or blacklist entries based on the sender’s IP address or e-mail
address. You can also create entries that check for particular MIME headers, MIME header
values or specific subject text.
Action for No Spam
Score Use this field to configure what the ZyWALL does if it does not receive a valid
response from the anti-spam external database.
If the ZyWALL does not receive a response within seven seconds, it sends
the e-mail digest a second time. If the ZyWALL still does not receive a
response after another seven seconds, it takes the action that you configure
here. The ZyWALL also takes this action if it receives an invalid response.
Here are possible reasons that would cause the ZyWALL to take this action:
1. The ZyWALL was not able to connect to the anti-spam external database.
2. The ZyWALL connected to the anti-spam external database, but there was
no HTTP response within seven seconds.
3. The ZyWALL received an error code from the anti-spam external database.
4. The ZyWALL received an invalid spam score (for example a number higher
than 100).
5. The ZyWALL received an unknown response to the anti-spam query.
Tag for No Spam
Score Enter a message or label (up to 16 ASCII characters) to add to the mail
subject of e-mails that it forwards if a valid spam score was not received
within ten seconds.
Forward SMTP &
POP3 mail with tag in
mail subject Select this radio button to have the ZyWALL forward mail with the tag that you
define.
Discard SMTP mail.
Forward POP3 mail
with tag in mail subject Select this radio button to have the ZyWALL discard SMTP mail. The
ZyWALL will still forward POP3 mail with the tag that you define.
External Database
Service Status This read-only field displays the status of your anti-spam external database
service registration and activation.
License Inactive displays if you have not successfully registered and
activated the anti-spam external database service.
License Inactive and the date your subscription expired display if your
subscription to the anti-spam external database service has expired.
License Active and the subscription expiration date display if you have
successfully registered the ZyWALL and activated the anti-spam external
database service.
Trial Active and the trial subscription expiration date display if you have
successfully registered the ZyWALL and activated the anti-spam external
database service trial subscription.
Apply Click Apply to save your changes back to the ZyWALL.
Reset Click Reset to begin configuring this screen afresh.
Table 88 SECURITY > ANTI-SPAM > External DB (continued)
LABEL DESCRIPTION