Hi @Vinod Survase ,
I know we can create a forwarding rules or just set the mail forwarding in exchange in external messaging system but I was looking for any other ways available which we can use.
Do you mean instead of implementing this from the external message system, you are trying to accomplish it by taking action from the internal user mailbox or internal mail system side?
If this is the case, I am afraid it's not feasible. From what I am aware of, this can only be configured from the external user's side.
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