spamassassin -D all --lint 2>&1 |grep pmg-scores
that would explain the issue - glad that the cause was found.think this was actually due to a cluster sync issue. All the non-master nodes were stuck in "syncing". No matter what I did I could not get that to change so rebooted them all and now things are fine.
The cluster documentation could indeed profit from an expansion - would you please open an enhancement request over at https://bugzilla.proxmox.com?Might be a good idea to write up more about the cluster page and the statuses and what the expected output should be (i.e active) and what syncing means and how long that should be shown (i.e not days/hours continually)