ZyXEL Communications 3.1 Manual De Usuario
Chapter 24 Anti-Spam
ZyWALL (ZLD) CLI Reference Guide
217
This table describes the DNSBL commands.
Table 122
DNSBL Commands
COMMAND
DESCRIPTION
[no] anti-spam dnsbl activate
Turns DNSBL checking on or off.
anti-spam dnsbl [1..5] domain
dnsbl_domain {activate|deactivate}
Adds or edits a DNSBL domain for checking e-mail header IP addresses.
no anti-spam dnsbl domain dnsbl_domain
Removes the specified DNSBL domain.
anti-spam dnsbl query-timeout smtp {drop
| forward | forward-with-tag}
Sets how the ZyWALL handles SMTP mail (mail going to an e-mail server)
if the queries to the DNSBL domains time out.
if the queries to the DNSBL domains time out.
anti-spam dnsbl query-timeout pop3
{forward | forward-with-tag}
Sets how the ZyWALL handles POP3 mail (mail coming to an e-mail client)
if the queries to the DNSBL domains time out.
if the queries to the DNSBL domains time out.
anti-spam dnsbl max-query-ip [1..5]
Sets up to how many sender and relay server IP addresses in the mail
header to check against the DNSBL.
header to check against the DNSBL.
anti-spam dnsbl ip-check-order {forward
| backward}
Configures the order in which anti-spam checks e-mail header IP
addresses against the DNSBLs.
addresses against the DNSBLs.
•
forward
checks the first N IP addresses. Checking starts from the first
IP address in the mail header. This is the IP of the sender or the first
server that forwarded the mail.
•
backward
checks the last N IP addresses. Checking starts from the
last IP address in the mail header. This is the IP of the last server that
forwarded the mail.
anti-spam tag {dnsbl | dnsbl-timeout}
[tag]
dnsbl
configures the message or label to add to the beginning of the mail
subject of e-mails that have a sender or relay IP address in the header
that matches a blacklist maintained by a DNSBL domain listed in the
ZyWALL.
that matches a blacklist maintained by a DNSBL domain listed in the
ZyWALL.
dnsbl-timeout
configures the message or label to add to the mail
subject of e-mails that the ZyWALL forwards if queries to the DNSBL
domains time out.
domains time out.
Use up to 15 alphanumeric characters, underscores (_), colons (:), or
dashes (-).
dashes (-).
show anti-spam dnsbl status
Displays the activation status of the anti-spam DNSBL checking.
show anti-spam dnsbl domain
Displays the ZyWALL’s configured anti-spam DNSBL domain entries.
show anti-spam dnsbl max-query-ip
Displays how many sender and relay server IP addresses in the mail
header anti-spam checks against the DNSBL.
header anti-spam checks against the DNSBL.
show anti-spam dnsbl ip-check-order
Displays the order in which anti-spam checks e-mail header IP addresses
against the DNSBLs.
against the DNSBLs.
show anti-spam dnsbl query-timeout {smtp
| pop3}
Displays how the ZyWALL handles SMTP or POP3 mail if the queries to the
DNSBL domains time out.
DNSBL domains time out.
show anti-spam tag {dnsbl | dnsbl-
timeout}
dnsbl
displays the anti-spam tag for e-mails that have a sender or relay
IP address in the header that matches a blacklist maintained by a DNSBL
domain.
domain.
dnsbl-timeout
displays the message or label to add to the mail subject
of e-mails that the ZyWALL forwards if queries to the DNSBL domains
time out.
time out.
show anti-spam dnsbl statistics
Displays anti-spam DNSBL statistics for each configured DNSBL domain.
anti-spam dnsbl statistics flush
Clears the anti-spam DNSBL statistics for each configured DNSBL domain.
anti-spam dnsbl query-timeout time
[1..10]
Sets how long the ZyWALL waits for a reply from the DNSBL domains.
show anti-spam dnsbl query-timeout time
Displays how long the ZyWALL waits for a reply from the DNSBL domains.