Server sends mails after reinstallation/migration

Hi everyone :wave:

I have re-installed a server and simply moved /etc/icinga* to the new machine. Monitoring itself works as expected, but the server now also sends monitoring emails. I wonder why that is and how to disable it.

I wonder even more why it suddenly sends mail (and no other server does in my setup).


Just run icinga2 feature disable notification.

Yeah, that will probably turn off notifications. But what does it exactly? Remove notifications from features-enabled? Would that be the default on a fresh Ubuntu LTS installation?