ZyXEL Communications ZYWALL 1050 - V2.00 EDITION 1 Podręcznik Użytkownika Pobierz pdf (Strona 216)

Chapter 23 Anti-Spam

ZyWALL (ZLD) CLI Reference Guide

216

The following table identifies the values required for many of these commands. Other input

values are discussed with the corresponding commands.

This table describes the DNSBL commands.

Table 118 Input Values for DNSBL Commands

LABEL DESCRIPTION

dnsbl_domain A domain that is maintaining a DNSBL. You may use 0-254 alphanumeric

characters, or dashes (-).

Table 119 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.

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.

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.

anti-spam dnsbl ip-check-order

{forward | backward}

Configures the order in which anti-spam checks e-mail

header IP 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.

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.

Use up to 15 alphanumeric characters, underscores (_),

colons (:), or 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.

show anti-spam dnsbl ip-check-order Displays the order in which anti-spam checks e-mail header

IP addresses 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.

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