ZyXEL Communications ZYWALL 1050 - V2.00 EDITION 1 Betriebsanweisung PDF herunterladen (Seite 217)

Chapter 23 Anti-Spam

ZyWALL (ZLD) CLI Reference Guide

217

23.2.4.1 DNSBL Example

This example:

• Sets the ZyWALL to use “DNSBL-example.com” as a DNSBL.

• Turns DNSBL checking on.

• Sets the ZyWALL to forward POP3 mail with a tag if the queries to the DNSBL domains

time out.

• Sets the ZyWALL to check up to 4 sender and relay server IP addresses in e-mail headers

against the DNSBL.

• Sets the ZyWALL to start DNSBL checking from the first IP address in the mail header.

• Sets the DNSBL tag to “DNSBL”.

• Sets the DNSBL timeout tag to “DNSBL-timeout”.

• Displays the DNSBL statistics.

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.

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.

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.

Table 119 DNSBL Commands

COMMAND DESCRIPTION

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ZyXEL Communications ZYWALL 1050 - V2.00 EDITION 1 Betriebsanweisung Seite 217