I am having a strange problem with two C170 appliances in the cluster. Cluster service via SSH is enabled and working correctly, and the first appliance added works as well. When I add the second appliance, the connections on port 25 are refused although https and ssh works. By trial and error I found that I have to override listener configuration on the second appliance and configure the listener and HAT manual. After the manual config everything works as it should. During this time the first appliance works without any problems at all.
Since this is a first time I see na issue like this any suggestion would be appreciated.
