Iwas trying to poll for applications using SAM postfix template on a linux server and it returned the following error messages
"Testing on node 10.230.8.189: failed with 'Unknown' status
Credentials cannot be null or empty."
SAM's Postfix template uses SSH, not SNMP to gather its metrics. When assigning the template to the node you will prompted to provide SSH root level credentials to the server being monitored for this template to function properly. My guess is that you chose the option to inherit the credentials from the template. The problem with that is there are no credentials defined in the template. This is the reason why you're receiving this error.
Hi, can you update the postfix template link please? Thank you.
