Use posttls-finger to monitor your DANE configuration in icinga2

First you need to install the posttls-finger command. This command is included in postfix versions >=2.11. On Debian you may just rebuild the packages from unstable for your distribution.

Then download the check_posttls_finger script and make it executable:

Add a command definition to icinga2 by creating /etc/icinga2/conf.d/check_posttls_finger.conf with the following content:

Also add an service definition to /etc/icinga2/conf.d/services.conf:

Now configure the domains your want to monitor in your host definitions. For example to monitor markusbenning.de: