Thanks Jochen, that looks exactly like what I need. Unfortunately I cannot save that rule, have to figure this one out now:
Could not save processing rule "" > Saving rule "" failed with status: cannot POST > http://mydomain.tld:12900/plugins/org.graylog.plugins.pipelineprocessor/system/pipelines/rule > > (500) -- You received this message because you are subscribed to the Google Groups "Graylog Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to graylog2+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/graylog2/234a117a-6dca-449b-a982-5333fc0a810f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
