1. You can manually scan the machines in a DMZ successfully.
2. When you are trying to create a schedule task for the servers that exist in DMZ zone fails. The schedule job will not be saved in Managed->Scheduled tasks list.
The current logged on user does not have an administrator privilege.
On Shavlik console server, Add the current logon user to the administrator group.
Shavlik Protect 9.x
Ivanti Patch for Windows Server 9.3.x