There are several areas which need to be checked:
The TCP/IP host name for the IBM i (on the IBM i) must:
System name: SYSTEM IA
Domain name: XYZ.COM
Host name must be: SYSTEM IA.XYZ.COM
Note: If any changes are made within the TCP/IP configuration, for the IBM i, TCP/IP must be re-started. The IBM i line description may also need to be "varied off" and "varied on".
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