Mail notifications icinga2

Please share the output of icinga2 daemon -C being the full config validation.

Also, please do not take screenshots of your terminal. It is barely readable and if we want to copy some config blocks to show you how things are done, we just can’t. I for myself won’t re-type the things.

Instead, use the code blocks to copy the text output in here, and let it format with surrounding 3 back ticks like so

```
log line 1
log line 2
```

You can find more details in this howto: Create topics and master Markdown formatting

Cheers,
Michael