Werk #16059: Fix possible failed notifications running in docker environment

Component

Notifications

Title

Fix possible failed notifications running in docker environment

Date

Sep 22, 2023

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.3.0b1	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.2.0p11	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.1.0p34	Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

Werk #15941 already fixed failed notifications on appliances if one recipient had no Email address configured.

We have now seen the same behaviour when running Checkmk in a docker container because Nullmailer can not handle such recipients.