Configuring the custom DNSBL list for the Anti-Spam engine

You can create a custom list of DNSBL servers to improve the accuracy of spam detection. DNSBL servers stores lists of IP addresses that were previously detected as sources of spam and to which the Anti-Spam engine assigns a spam rating and one of the Anti-Spam message scan status labels.

To create the custom DNSBL list of the Anti-Spam engine:

1. In the main window of the application web interface, open the management console tree and select the Settings section and Protection subsection.
2. In the Anti-Spam section, click the Custom DNSBL list link to open the Custom DNSBL list window.
3. In the field under the window name, type DNS names or IP addresses into the DNSBL list.

   You can use only these symbols: a–z, A–Z, 0–9, "-" and ".", and the "-" symbol must not come last. For example, you can add the sender's DNS name dns-bl.example.com or the sender's IP address 10.0.0.1 to the list.

   Separate the addresses with the ";" symbol.

4. Click the Apply button.

To view the custom DNSBL list of the Anti-Spam engine:

1. In the main window of the application web interface, open the management console tree and select the Settings section and Protection subsection.
2. In the Anti-Spam section, click the Custom DNSBL list link to open the Custom DNSBL list window.
3. Click the Apply or Cancel button after you finish managing the list.

   The Custom DNSBL list window closes.

To remove an entry from the custom DNSBL list of the Anti-Spam engine:

1. In the main window of the application web interface, open the management console tree and select the Settings section and Protection subsection.
2. In the Anti-Spam section, click the Custom DNSBL list link to open the Custom DNSBL list window.
3. In the field under the window name, select one or several accounts that you want to delete.
4. Press the Delete key.
5. Click the Apply button.

See also Anti-Spam protection About Anti-Spam protection About Anti-Spam message scan status labels Enabling and disabling Anti-Spam protection of messages Enabling and disabling Anti-Spam scanning of messages for a rule Configuring Anti-Spam engine settings Setting default values for Anti-Spam engine settings Configuring the custom SURBL list for the Anti-Spam engine Configuring Anti-Spam scan settings for a rule Configuring Anti-Spam scan actions on messages Configuring tags added to message subjects after Anti-Spam scanning

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