Thanks for your input! That might be an option. However, this would still not check the productive notification rules themselves. For example I can’t simulate a fault on a NetApp filer for storage oncall that way. I’ll keep that option in mind as a last resort, though. At least this could prove that SMS is active.
Custom notifications in the GUI work as expected and alert the right people, based on the notification rules. Is there any way to trigger custom notifications via API? Or some slightly dirty approach via livestatus, possibly?