Checkmk Html Email Notification: Empty Subject and Recipient

Hello,

I hope my request finds you all well.

I am running checkmk raw edition 2.2.0p5 with one master and multiple monitoring hosts (distributed monitoring).

I’ve set up and enabled email notifications.

To do so, I have defined in the event notification rule:

  • the sender,
  • the contact groups,
  • the fallback addresses.(in global settings)

I’m receiving the mails but at the relayhost, some messages are blocked. After investigating, I see that the recipient field and the subject are empty.

Do you have any idea what is causing this issue?

Thank you for your help

checkmk edition: raw
checkmk version: 2.2.0p5

cheers

Alfred