This is a plugin for Logstash. It is fully free and fully open source. The license is Apache 2.0, meaning you are pretty much free to use it however you want in whatever way. Logstash provides ...
A set of grok patterns for parsing postfix logging using grok. Also included is a sample Logstash config file for applying the grok patterns as a filter. This event format is supported by the Logstash ...