Hi Norm,
thanks for your suggestions.
Decentralised
I did check that and spoolfiles are created correctly like this:
2021-11-10 10:16:28,832 [20] [cmk.base.notify] Got raw notification (pve03.example.org;Memory) context with 71 variables 2021-11-10 10:16:28,832 [20] [cmk.base.notify] Creating spoolfile: /omd/sites/monitoring01/var/check_mk/notify/spool/75ede8d3-8c88-4341-9948-0c3926244435
I also tested sending mails via the host itself which is working.
Cheers