Chapter 6 Monitor
USG20(W)-VPN Series User’s Guide
129
Flush Data
Click this button to discard all of the screen’s statistics and update the report
display.
Total Mails Scanned
This field displays the number of e-mails that the USG’s anti-spam feature has
checked.
Clear Mails
This is the number of e-mails that the USG has determined to not be spam.
Clear Mails Detected by
Whitelist
This is the number of e-mails that matched an entry in the USG’s anti-spam white
list.
Spam Mails
This is the number of e-mails that the USG has determined to be spam.
Spam Mails Detected by
Black List
This is the number of e-mails that matched an entry in the USG’s anti-spam black
list.
Spam Mails Detected by
IP Reputation
This is the number of e-mails that the USG has determined to be spam by IP
Reputation. Spam or Unwanted Bulk Email is determined by the sender’s IP
address.
Spam Mails Detected by
Mail Content
This is the number of e-mails that the USG has determined to have malicious
contents.
Spam Mails Detected by
DNSBL
The USG can check the sender and relay IP addresses in an e-mail’s header against
DNS (Domain Name Service)-based spam Black Lists (DNSBLs). This is the number
of e-mails that had a sender or relay IP address in the header which matched one of
the DNSBLs that the USG uses.
Spam Mails with Virus
Detected by Mail
Content
This is the number of e-mails that the USG has determined to have malicious
contents and attached with virus.
Virus Mails
This is the number of e-mails that the USG has determined to be attached with
virus.
Query Timeout
This is how many queries that were sent to the USG’s configured list of DNSBL
domains or Mail Scan services and did not receive a response in time.
Mail Sessions
Forwarded
This is how many e-mail sessions the USG allowed because they exceeded the
maximum number of e-mail sessions that the anti-spam feature can check at a
time.
You can see the USG’s threshold of concurrent e-mail sessions in the
Anti-Spam >
Status
screen.
Use the
Anti-Spam > General
screen to set whether the USG forwards or drops
sessions that exceed this threshold.
Mail Sessions Dropped
This is how many e-mail sessions the USG dropped because they exceeded the
maximum number of e-mail sessions that the anti-spam feature can check at a
time.
You can see the USG’s threshold of concurrent e-mail sessions in the
Anti-Spam >
Status
screen.
Use the
Anti-Spam > General
screen to set whether the USG forwards or drops
sessions that exceed this threshold.
Top Sender By
Use this field to list the top e-mail or IP addresses from which the USG has detected
the most spam.
Select
Sender IP
to list the source IP addresses from which the USG has detected
the most spam.
Select
Sender Email Address
to list the top e-mail addresses from which the USG
has detected the most spam.
#
This field displays the entry’s rank in the list of the top entries.
Sender IP
This column displays when you display the entries by
Sender IP
. It shows the
source IP address of spam e-mails that the USG has detected.
Table 54
Monitor > UTM Statistics > Anti-Spam (continued)
LABEL
DESCRIPTION
Summary of Contents for ZyWall USG20-VPN
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