Serilog with Graylog not logging

I have a Web API and I'm trying to log messages into Graylog, using Serilog. Now matter what I do, no messages are shown in my Graylog application. This is what I have so far:

This is in my Program.cs

var logger = new LoggerConfiguration().


This is my configuration:

  "Serilog": {
    "Using": [ "Serilog.Sinks.Graylog" ],
    "MinimumLevel": "Information",
    "WriteTo": [
        "Name": "Graylog",
        "Args": {
          "hostnameOrAddress": "",
          "port": "12201",
          "transportType": "Udp"
    "Properties": {
      "Application": "Centralized logging application"
  "AllowedHosts": "*"

And I'm trying to log a:

_logger.LogError(0, new Exception("Exception Message"), "Message", new WeatherForecast());

Can someone please help me? I need to see my exception inside Graylog.

Thanx a lot in advance

How many English words
do you know?
Test your English vocabulary size, and measure
how many words do you know
Online Test
Powered by Examplum