D-Link DFL-260E User Manual page 267

6.2.5. The SMTP ALG
For the DNSBL subsystem overall:
• Number of emails checked.
• Number of emails Spam tagged.
• Number of dropped emails.
For each DNSBL server accessed:
• Number of positive (is Spam) responses from each configured DNSBL server.
• Number of queries sent to each configured DNSBL server.
• Number of failed queries (without replies) for each configured DNSBL server.
The dnsbl CLI Command
The dnsbl CLI command provides a means to control and monitor the operation of the Spam
filtering module. The dnsbl command on its own without options shows the overall status of all
ALGs. If the name of the SMTP ALG object on which DNSBL Spam filtering is enabled is
my_smtp_alg then the output would be:
gw-world:/> dnsbl
DNSBL Contexts:
Name
------------------------
my_smtp_alg
alt_smtp_alg
The -show option provides a summary of the Spam filtering operation of a specific ALG. It is used
below to examine activity for my_smtp_alg although in this case, the ALG object has not yet
processed any emails.
gw-world:/> dnsbl my_smtp_alg -show
Drop Threshold
Spam Threshold
Use TXT records
IP Cache disabled
Configured BlackLists : 4
Disabled BlackLists
Current Sessions
Statistics:
Total number of mails checked : 0
Number of mails dropped
Number of mails spam tagged
Number of mails accepted
BlackList
------------------------- -------- ----- -------- -------- --------
zen.spamhaus.org
cbl.abuseat.org
dnsbl.sorbs.net
asdf.egrhb.net
To examine the statistics for a particular DNSBL server, the following command can be used.
gw-world:/> dnsbl smtp_test zen.spamhaus.org -show
Status Spam
-------- -------- -------- --------
active
inactive
: 20
: 10
: yes
: 0
: 0
: 0
: 0
: 0
Status Value Total
active 25
active 20
active
active
267
Chapter 6. Security Mechanisms
Drop Accept
156 65
0 0
Matches
0
0
5 0
5 0
34299
0
Failed
0 0
0 0
0 0
0 0