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Message filter plugin to reverse lookup the source field
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DNS Resolver Plugin for Graylog

Build Status

This message filter plugin can be used to do DNS lookups for the source field in Graylog messages.

Required Graylog version: 2.4.0 and later

Please use version 1.1.2 of this plugin if you are still running Graylog 1.x


Download the plugin and place the .jar file in your Graylog plugin directory. The plugin directory is the plugins/ folder relative from your graylog-server directory by default and can be configured in your graylog.conf file.

Restart graylog-server and you are done.


The following configuration options can be added to the Graylog configuration file.

  • dns_resolver_enabled -- Set to true if the message filter should be run. (default false)
  • dns_resolver_run_before_extractors -- Set to true if the DNS lookup should be done before running extractors. (default true)
  • dns_resolver_timeout -- The timeout for the DNS lookup. (default 2s)


This project is using Maven and requires Java 8 or higher.

You can build a plugin (JAR) with mvn package.

DEB and RPM packages can be build with mvn jdeb:jdeb and mvn rpm:rpm respectively.

Plugin Release

We are using the maven release plugin:

$ mvn release:prepare
$ mvn release:perform

This sets the version numbers, creates a tag and pushes to GitHub. TravisCI will build the release artifacts and upload to GitHub automatically.

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