CMMVC6332E The command has failed because an IPv6 email server address was specified and the cluster does not have an IPv6 address.

Explanation
The cluster can only communicate with a server
through an IPv6 address if an IPv6 cluster management IP address is
configured.

User response
Either configure the cluster to have an IPv6 cluster
management address or use an email server that has an IPv4 address,
and resubmit the task.
Note: You do not need to remove the IPv4
address if you configure the cluster to have an IPv6 cluster management
address.