My Proxmox Mailgateway Cluster is now working fine. But sometimes I have bad SMTP Connection times, tested on mxtoolbox.com. But only on the second Proxmox Mailgateway Server. I disable Greylisting.
SMTP Connection Time
6.944 seconds - Warning on Connection time
When trying to join a node to the master node it fails with the below error message. How can I force the join command to accept the other certificate? Currently it does not seem to be possible.
According to this line cluster join failed: 500 Can't connect to MASTERIP:8006 (certificate verify...