Chapter 33 Anti-Spam

The following table describes the labels in this screen.

Table 178 Anti-X > Anti-Virus > General > Add

LABEL

DESCRIPTION

Enable Policy

Select this check box to have the ZyWALL apply this anti-spam policy to check e-

 

mail traffic for spam.

 

 

Log

Select how the ZyWALL is to log the event when the DNSBL times out or an e-mail

 

matches the white list, black list, or DNSBL.

 

no: Do not create a log.

 

log: Create a log on the ZyWALL.

 

log alert: An alert is an e-mailed log for more serious events that may need more

 

immediate attention. Select this option to have the ZyWALL send an alert.

 

 

From

Select source and destination zones for traffic to scan for spam. The anti-spam

To

policy has the ZyWALL scan traffic coming from the From zone and going to the

 

To zone.

Protocols to Scan

Select which protocols of traffic to scan for spam.

 

SMTP applies to traffic using TCP port 25.

 

POP3 applies to traffic using TCP port 110.

 

 

Check White List

Select this check box to check e-mail against the white list. The ZyWALL classifies

 

e-mail that matches a white list entry as legitimate (not spam).

 

 

Check Black List

Select this check box to check e-mail against the black list. The ZyWALL classifies

 

e-mail that matches a black list entry as spam.

 

 

Check DNSBL

Select this check box to check e-mail against the ZyWALL’s configured DNSBL

 

domains. The ZyWALL classifies e-mail that matches a DNS black list as spam.

 

 

Actions for Spam

Use this section to set how the ZyWALL is to handle spam mail.

Mail

 

 

 

SMTP

Select how the ZyWALL is to handle spam SMTP mail.

 

Select drop to discard spam SMTP mail.

 

Select forward to allow spam SMTP mail to go through.

 

Select forward with tag to add a spam tag to an SMTP spam mail’s mail subject

 

and send it on to the destination.

 

 

POP3

Select how the ZyWALL is to handle spam POP3 mail.

 

Select forward to allow spam POP3 mail to go through.

 

Select forward with tag to add a spam tag to an POP3 spam mail’s mail subject

 

and send it on to the destination.

 

 

OK

Click OK to save your changes.

 

 

Cancel

Click Cancel to exit this screen without saving your changes.

 

 

33.4 The Anti-Spam Black List Screen

Click Anti-X > Anti-Spam > Black /White List to display the Anti-Spam Black List screen.

Configure the black list to identify spam e-mail. You can create black list entries based on the sender’s or relay server’s IP address or e-mail address. You can also create entries that check for particular e-mail header fields with specific values or specific subject text.

564

 

ZyWALL USG 100/200 Series User’s Guide