ZyXEL Communications 1000 ユーザーズマニュアル

 Chapter 10 Monitor

ZyWALL USG 1000 User’s Guide

Click Monitor > Anti-X Statistics > 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.

Figure 240   Monitor > Anti-X Statistics > Anti-Spam > Status

The following table describes the labels in this screen. 

Table 49   Monitor > Anti-X Statistics > Anti-Spam > Status

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.

Concurrent Mail 
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. 

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.

#

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.

Total Queries

This is the total number of DNS queries the ZyWALL has sent to this 
DNSBL.

Avg. Response 
Time (sec)

This is the average for how long it takes to receive a reply from this 
DNSBL.

No Response

This is how many DNS queries the ZyWALL sent to this DNSBL without 
receiving a reply.