ZyXEL Communications 200 Series User Manual
Chapter 33 Anti-Spam
ZyWALL USG 100/200 Series User’s Guide
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The following table describes the labels in this screen.
33.7 The Anti-Spam Status Screen
Click Anti-X > Anti-Spam > Status to display the Anti-Spam Status screen.
Use the Anti-Spam Status screen to see how many e-mail sessions the anti-spam feature is
scanning and statistics for the DNSBLs.
scanning and statistics for the DNSBLs.
Figure 429 Anti-X > Anti-Spam > Status
The following table describes the labels in this screen.
Table 183 Anti-X > Anti-Spam > DNSBL > Add
LABEL
DESCRIPTION
General Settings
Enable DNSBL
Domain
Domain
Select this check box to have the ZyWALL check the sender and relay IP
addresses in e-mails against this DNSBL.
addresses in e-mails against this DNSBL.
DNSBL Domain
Enter the domain that is maintaining a DNSBL.
OK
Click OK to save your changes.
Cancel
Click Cancel to exit this screen without saving your changes.
Table 184 Anti-X > Anti-Spam > Status
LABEL
DESCRIPTION
Refresh
Click this button to update the information displayed on this screen.
Flush
Click this button to clear the DNSBL statistics. This also clears the concurrent
mail session scanning bar’s historical high.
mail session scanning bar’s historical high.
Concurrent Mail
Session Scanning
Session Scanning
The darker shaded part of the bar shows how much of the ZyWALL’s total spam
checking capability is currently being used.
The lighter shaded part of the bar and the pop-up show the historical high.
The first number to the right of the bar is how many e-mail sessions the ZyWALL
is presently checking for spam. The second number is the maximum number of
e-mail sessions that the ZyWALL can check at once. An e-mail session is when
an e-mail client and e-mail server (or two e-mail servers) connect through the
ZyWALL.
checking capability is currently being used.
The lighter shaded part of the bar and the pop-up show the historical high.
The first number to the right of the bar is how many e-mail sessions the ZyWALL
is presently checking for spam. The second number is the maximum number of
e-mail sessions that the ZyWALL can check at once. An e-mail session is when
an e-mail client and e-mail server (or two e-mail servers) connect through the
ZyWALL.
DNSBL Statistics
These are the statistics for the DNSBL the ZyWALL uses. These statistics are
for when the ZyWALL actually queries the DNSBL servers. Matches for DNSBL
responses stored in the cache do not affect these statistics.
for when the ZyWALL actually queries the DNSBL servers. Matches for DNSBL
responses stored in the cache do not affect these statistics.
#
This is the entry’s index number in the list.
DNSBL Domain
These are the DNSBLs the ZyWALL uses to check sender and relay IP
addresses in e-mails.
addresses in e-mails.
Total Queries
This is the total number of DNS queries the ZyWALL has sent to this DNSBL.