To execute the export script of the Virtual DataPort located in the remote server, I would write a **shell/batch script** to connect to Virtual DataPort and run the export script in the **Execute shell** or **Execute Windows Batch Command** of the **Build steps** in Jenkins.
Alternatively, you can also use **sshPublisher** plugin in Jenkins to execute sshCommand or sshScript to execute command or shell script on a remote server. For more details, you could refer to the [**Publish Over SSH Plugin**](https://wiki.jenkins.io/display/JENKINS/Publish-Over-SSH-Plugin.html) Jenkins document.
Regarding the above-mentioned error, I would make sure to check the following:
* Make sure the hostname and port number are correct.
* Check whether the Virtual DataPort is up and running.
* Check whether there is no firewall restriction or network issue between the server and the client.
Hope this helps!