Hi Kyle,
Yes, I'm sure my Gateway is set correctly and I'm using Google's preferred DNS servers (8.8.8.8 - 8.8.4.4 OR 8.8.8.8 - 1.1.1.1) and setup the application specific passwords on Gmail and GMX. Still the test fails. Hence I assume it's network related.
On Canyouseeme.org it shows port...