Server with Kaspersky Security 9.0 for Microsoft Exchange Servers generates excessive DNS traffic

Back to "Troubleshooting"

This article reefers to:

• Kaspersky Security 9.5 for Microsoft Exchange Servers Maintenance Release 5 (version 9.5.153.0);
• Kaspersky Security 9.4 for Microsoft Exchange Servers Maintenance Release 4 (version 9.4.189.0);
• Kaspersky Security 9.3 for Microsoft Exchange Servers Maintenance Release 3 (version 9.3.54.0);
• Kaspersky Security 9.2 for Microsoft Exchange Servers Maintenance Release 2 (version 9.2.39.0);
• Kaspersky Security 9.1 for Microsoft Exchange Servers Maintenance Release 1 (version 9.1.42.0); 
• Kaspersky Security 9.0 for Microsoft Exchange Servers (version 9.0.129.0).

Servers with Kaspersky Security 9.0 for Microsoft Exchange Servers installed can generate excessive DNS traffic. In this case, corporate network administrator may receive an email from a resource that provides databases of spammer domains and IP addresses.

To bring down the number of DNS requests to such services, do the following:

1. Open the Administration Console of Kaspersky Security 9.0 for Microsoft Exchange Servers.
2. Select the Protection Server or the profile.
3. Select the Server protection node.
4. Expand the Use external Anti-Spam services section.
5. Disable the use of default DNSBL and SURBL servers.

6. Form a custom list of DNSBL and SURBL servers that include only the servers capable of processing your Exchange server load.

Back to "Troubleshooting"