The error message attached shows that TCP://10.1.4.10:5023 can't be contacted.
Given it is a different IP address I assume it is a different server. In this case the default port it will be listening on will be 5022, not 5023.
Unless you created the mirror using a query and specified port 5023 i'd try setting the mirror end point to TCP://10.1.4.10:5022 and trying again...