One host in cluster keeps sending incomplete emails

[iwannabfishn]

I have an 8 node cluster. I have configured the cluster to send notifications to my local smtp server. I also disabled the default sendmail target. I have one host that keeps sending incomplete emails to my MX record, not my local smtp server. Is there a configuration I need to check on this host somewhere? I am looking for some direction on where to look to find out why this is happening

 

[kawano-y]

Could you share the notification config and mail logs from the affected node, ideally with the same output from a working node for comparison?

cat /etc/pve/notifications.cfg
cat /etc/pve/priv/notifications.cfg
postqueue -p
journalctl -u postfix --since "24 hours ago"

Please redact any secrets.