Why does validation fail on the "Cluster connection test" when I am using the MATLAB Job Scheduler?

Validation fails with the following error message:

ERROR: Could not contact an MJS lookup service on host ‘ah-hostname’. Possible reasons for this problem are:1. MJS has not been started, has crashed, or has been shut down.
2. A firewall is blocking communication between this computer and ‘ah-hostname’.
3. This computer cannot resolve the hostname of ‘ah-hostname’, it resolves it to an incorrect IP address.
4. ‘ah-hostname’ resolves its own hostname to an incorrect IP address.
5. Network routers are unable to route traffic from this computer to ‘ah-hostname’.

The hostname, ah-hostname, corresponds to the fully qualified hostname ah-hostname.dhcp.mathworks.com.
This computer resolves it to the IP address 111.22.33.44.Why does validation fail on the "Cluster connection test" when I am using the MATLAB Job Scheduler?

Validation fails with the following error message:

ERROR: Could not contact an MJS lookup service on host ‘ah-hostname’. Possible reasons for this problem are:1. MJS has not been started, has crashed, or has been shut down.
2. A firewall is blocking communication between this computer and ‘ah-hostname’.
3. This computer cannot resolve the hostname of ‘ah-hostname’, it resolves it to an incorrect IP address.
4. ‘ah-hostname’ resolves its own hostname to an incorrect IP address.
5. Network routers are unable to route traffic from this computer to ‘ah-hostname’.

The hostname, ah-hostname, corresponds to the fully qualified hostname ah-hostname.dhcp.mathworks.com.
This computer resolves it to the IP address 111.22.33.44. Why does validation fail on the "Cluster connection test" when I am using the MATLAB Job Scheduler?

Validation fails with the following error message:

ERROR: Could not contact an MJS lookup service on host ‘ah-hostname’. Possible reasons for this problem are:1. MJS has not been started, has crashed, or has been shut down.
2. A firewall is blocking communication between this computer and ‘ah-hostname’.
3. This computer cannot resolve the hostname of ‘ah-hostname’, it resolves it to an incorrect IP address.
4. ‘ah-hostname’ resolves its own hostname to an incorrect IP address.
5. Network routers are unable to route traffic from this computer to ‘ah-hostname’.

The hostname, ah-hostname, corresponds to the fully qualified hostname ah-hostname.dhcp.mathworks.com.
This computer resolves it to the IP address 111.22.33.44.  MATLAB Answers — New Questions

​